Agilent 214A Operating and Service Manual

5 OPERATING

f
‘\

AND SERVICE

GENERATOR

MANUAL

214A

HEWLETT

m

-meT&~c~~R~

Y

COPYRIGHT AND DISCLAIMER NOTICE

Copyright - Agilent Technologies, Inc. Reproduced with the permission of Agilent

Technologies Inc. Agilent Technologies, Inc. makes no warranty of any kind with regard

to this material including, but not limited to, the implied warranties of merchantability
and fitness for a particular purpose. Agilent Technologies, Inc. is not liable for errors
contained herein or for incidental or consequential damages in connection with the
furnishing, performance, or use of this material or data.

CERTIFICATION

The Hewlett-Packard Company certifies that this instrument was

thoroughly tested and inspected and found to meet its published

specifications when it was shipped from the factory. The Hewlett-

Packard Company further certifies that its calibration measurements

are traceable to the U. S. National Bureau
allowed by the Bureau’s calibration facility.

of

Standards to the extent

WARRANTY AND ASSISTANCE

All Hewlett-Packard products are warranted against defects in

materials and workmanship. This warranty applies for one year from

the date of delivery, or, in the case of certain major components listed
in the operating manual, for the specified period. We will repair or
replace products which prove to be defective during the warranty
period. No other warranty is expressed or implied. We are not liable

for consequential damages.

For any assistance contact your nearest Hewlett-Packard Sales and
Service Office. Addresses are provided at the back of this manual.

OPERATING AND SERVICE MANUAL

MODEL 214A

PULSEGENERATOR

SERIALS PREFIXED: 812.

02056-7 PRINTED: APR 1968

Table of Contents Model 214A

TABLE OF CONTENTS

Section Page

I GENERAL INFORMATION. ........... l-l

l-l. Instrument Description ......... l-l

l-5. Instrument Applications ........ 1-2

1-7.

Equipment and Accessories

Available ................ l-2

l-9. Differences Between Instruments . . l-2

II PREPARATION FOR USE

2-l. Initial Inspection .............

2-3. AC Power Considerations

............

.......

2 - 1
2 - 1

2-l
2-4. Power Source Requirements ... 2-l
2-6.

Three-Conductor Power Cable . . 2-l

2-8. Ventilation Requirements ....... 2 -1

2-11. Rack/Bench Conversion ........

2-l

2-15. Repackaging for Shipment ....... 2 -1

2-16. Packaging Suggestions ....... 2 -1

2-18.

Returning for Service or Repair . 2-2

III OPERATING INSTRUCTIONS .......... 3-l

3-l. General ................... 3-l

3-3. Operating Considerations ....... 3 - 1

3-4. Duty Cycle Limitation. .......

3-l

3-7. Pulse Position vs. Rate ...... 3-l

3-9. Minimum Spacing with Double

Pulses ................

3-3

3-11. Gating of Pulses ........... 3-3

3-13. Operating Procedures. .........

3-3

3-14. Manual Trigger Mode ........ 3-3

3-16. External Trigger Mode ....... 3-3

3-18. Internal Trigger Mode ....... 3-3

IV PRINCIPLES OF OPERATION

.........

4-1

4-l. General ................... 4-1

4-3. Input and Rate Generator. ....... 4-l

4-4. External Trigger Operation .... 4-1

4-7. Manual Trigger Operation ..... 4-l

4-9. Internal Trigger Operation

.... 4-1

4-11. Trigger Blocking Oscillator. ... 4-l

4-13.

Gate Input Circuit ............

4-2

4-15. Advance, Delay, Double Pulse
4-17.

Modes ..................

Pulse Position Circuit .......

4-2
4-2

4-20. Pulse Width Multivibrator ..... 4-2

4-22.

Trigger Output Blocking

Oscillator. ............. 4-2

4-24. Start-Stop Pulse Blocking

Oscillators ............. 4-2

4-27. Pulse Advance Timing Logic ...

4-2

APPENDIX I MANUAL CHANGES. * . * . * * . * . * . I-l

Section

Page

4-29. Pulse Delay Timing Logic ..... 4-2

4-31. Double Pulse Timing Logic

.... 4-3

4-33. Forming and Controlling Output

Pulse. .................. 4-3

4-35. Start Pulse Spiker .......... 4-3

4-37. Stop Pulse Spiker. .......... 4-4

4-39. Pulse Output Circuit. ........ 4-4

4-41.

Pulse Output Amplitude Controls. 4-4

4-43. Reversing Pulse Polarity. ..... 4-4

V MAINTENANCE .................. 5-l

5-l. Introduction ................ 5-l

5-3. Performance Check ........... 5-l

5-5.

External Gating ............

5-l

5-6. External Triggering ......... 5-l

5-7. Pulse Amplitude and Width

.... 5-l

5-8. Pulse Position. ............ 5-2

5-9.

Double Pulse and Manual

Triggering ............. 5-3

5-10. Internal Rep Rate. ..........

5-3

5-11. Duty Cycle ............... 5-3

5-12. Pulse Droop .............. 5-4

5-13.

Overshoot, Preshoot, and Pulse

Top Variation ........... 5-4

5-14.

Rise Time and Fall Time

..... 5-4

5-15. Rate and Width Jitter ........ 5-5

5-16. Output Pulse to Trigger Output

Jitter ................ 5-6

5-17. Adjustments ................ 5-6

5-21. Power Supply Adjustment ..... 5-6

5-23. Rate Multivibrator .......... 5 -6

5-24.

Pulse Position Multivibrator

... 5-7

5-25. Output Bias Current ......... 5-8

5-26.

Pulse Width and Amplitude

.... 5-8

5-27. Overload Relay Adjust ....... 5-10

5-28. Troubleshooting. .............

5-10

5-30. Trigger Mode Checks ........ 5-10

5-31. Pulse Control Checks
5-32.

Output Circuit Checks.

........ 5-10

....... 5-10

5-33. Power Supply Checks ........ 5-11

5-35. Repair and Replacement

....... .5- 11

5-36. General ................. 5-11

5-38. Servicing Etched Circuit Boards. . 5- 11

5-40. Periodic Maintenance .......... 5-11

5-41. General ................. 5-11

5-43. Cleaning Air Filter ......... 5-11

VI REPLACEABLE PARTS .............

6-l

6-l. Introduction ................ 6-l

6-4. Ordering Information .......... 6-l

ii

02056-3

Model 214A List of Illustrations and Tables

LIST OF ILLUSTRATIONS

Number Title

Page

l-l. Model 214A Pulse Generator ......... l-1

3-1.

Defining Pulse Characteristics. ....... 3-l

3-2, Double Pulse Operation ............. 3 - 1

3-3. Model 214A Front Panel Description .... 3-2

3-4. Gating Pulse Output ............... 3-3

4-l. Model 214A Block Diagram ..........

4-O

4-2. Pulse Advance Timing Sequence ....... 4-3

4-3. Pulse Delay Timing Sequence. ........ 4-3

4-4. Double Pulse Timing Sequence ........ 4-4

5-l.

5-2.

5-3.

5-4.

5-5.

5-6.

5-7.
5-8.
5-9.

5-10.
5-11.
5-12.
5-13.
5-14.
5-15.
5-16.
5-17.

Positive Pulse Shape 1OV Amplitude

Negative Pulse Shape 1OV Amplitude .... 5-5

Positive Pulse Risetime 1OV Amplitude . . 5-5
Negative Pulse Risetime 1OV Amplitude. . 5-5

Location of Adjustments ............

Assembly A301 Circuit Side. ......... 5-11

Assembly Al01 Component Location

Assembly Al02 Component Location .... 5-13

Assemblies A202 and A204 Component

Location.

....................

Assembly A301 Component Location

Assembly Al Component Location. ..... 5-16

Typical Waveforms ............... 5-17

Power Supply Schematic ............

Trigger Input Circuit Schematic ....... 5-20

Pulse Control Circuit Schematic.

Start-Stop Pulse Circuit Schematic ..... 5-22

Output Circuit Schematic. ...........

.... 5-4

5-7

.... 5-12

5-14

.... 5-15

5-19

...... 5-21

5-23

02056-l

LIST OF TABLES

Number Title Page

l-l. Specifications . . . . . . . . . . . . . . . . . . . 1-O

5-l. Equipment Required for Test and

Adjustments . . . . . . . . . . . . . . . . . . 5-2

5-2. Power Supply Voltage Adjustments . . , . . 5-6

6-l. Reference Designation Index . . . . . . . . . 6-2

6-2. Replaceable Parts . . . . . . . . . . . . . . . . 6-16

6-3. Code List of Manufacturers . . . . . . . . . . 6-22

. . .

111

Section I

Table l-l

Model 214A

Table l- 1. Specifications

1

OUTPUT PULSE

Source Impedance:

lower ranges: approximately 1500 ohms on the

lOO-volt range.

Pulse Shape

Rise and Fall Time: <13 nsec on 20-volt and
lower ranges and the -50 volt range, < 15 nsec

on the +50 volt range.

with vernier set for maximum attenuation.

1OOV range typically 15 nsec.

Pulse Amplitude:

attenuator provides 0.2 to 100 volts in a 1,2,

5, 10 sequence (9 ranges). Vernier reduces

output of 0.2~ setting to 80 mv and provides

continuous adjustment between ranges.

Polarity: Positive or negative.
Overshoot: < 50/o, both leading and trailing edges.

Pulse Top Variations: < 4%.
Droop: < 6%.

Preshoot: < 2%.
Pulse Width: 50 nsec to 10 ms in 5 decade

ranges. Continuously adjustable vernier.

Width Jitter: < .05% of pulse width + 1 nsec.

50 ohms on the 50-volt and

Typically < 10 nsec

100 volts into 50 ohms. An

External

Repetition Rate: DC to 1 MC
Sensitivity: < 0.5~ pk
Slope: Positive or negative
Level: Adjustable from -40~ to +4Ov.
Delay: Delay between input trigger and leading

edge of pulse out is approximately 250 nsec in
Pulse Advance mode (approx. 420 nsec mini­mum in Pulse Delay mode).

External Gating: +8 volt signal gates pulse gen-

erator on. Maximum signal, +4Ov peak.

Double Pulse

Minimum Spacing: 1 usec on the .05 to lksec
pulse width range.
upper limit of Width range.

Trigger Output

Amplitude: > 1Ov open circuit.

Width: 0.05 psec, nominal.

Polarity: Positive or negative.

GENERAL

Maximum Duty Cycle: 10% on 100 and 50 volt

ranges; 25% on 20 volt range; 50% on 10 volt

and lower ranges.

Power: 115 or 23OvilO%, 50 to 60 cps,

Dimensions:

On all other ranges 25% of

325

watts.

Pulse Position: 0 to 10 ms advance or delay,

with respect to trigger output (5 decade ranges).
Continuously adjustable vernier.

Position Jitter: < 0.05% of advance or delay

setting +l ns (between trigger pulse and output
pulse).

REPETITION RATE AND TRIGGER

Internal

Repetition Rate:

continuously adjustable vernier.

Rate Jitter: < 0.5% of the period.

Manual: Push button single pulse, 2 cps maxi-

mum rate.

10 cps to 1 MC (5 ranges),

Weight:

(19,6 kg).

Net 35 lbs. (15,8 kg). Shipping 48 lbs.

J

1-o

02056-3

Model 214A

Paragraphs l-l to l-4

Section I

SECTION I

GENERAL INFORMATION

l-l. INSTRUMENT DESCRIPTION.

1-2. The m@$ Model 214APulseGenerator (Figure l-l)

is a versatile instrument providing variable repeti­tion rate, variable width, variable amplitude, posi­tive or negative, pulses with a rise and fall time of

less than 15 nanoseconds. The complete specifica­tions are given in Table l-l. Pulse power of up to

200 watts is available when using a 50-ohmload. The

Model 214A output impedance matches an external

system of 50 ohms on all ranges of 50 volts amplitude

and below, thus minimizing reflections. The maxi-

mum pulse amplitude is 100 volts (with a source

impedance of 1500 ohms) and the amplitude may be

set as low as 80 millivolts using the vernier and the

lowest range. For pulse amplitudes of 10 volts and

less, the duty cycle may be set as high as 50% (see

Table l-l for duty cycle limits at other amplitudes),
providing a square wave output.

l-3. Pulses may be obtained from the Model 214A
at a rate of dc to 1 MC using an external trigger source

or from 10 cps to 1 MC with an internal generator.

For external triggers, positive or negative signals

of 0.5 volt peak may be used and trigger slope and
level may be selected to determine the triggering
point on the waveform. A single pulse may be obtained
from an internal circuit each time a manual button
is pushed. Gating of pulses is done easily by applying
an external signal and an output occurs only when the
gating signal reaches a positive 8 volt level. Three

modes of pulse operation allow: (1) setting of the
output pulse to occur from 0 to 10 ms before (advance)
the trigger output, (2) setting of the output pulse to
occur from 0 to 10 ms after (delay) the trigger output,
or (3) a double pulse output with variable spacing
between the two pulses.

l-4. The Hewlett-Packard modular instrument en­closure system provides advantages in maintenance
and operation. Easy removal of instrument covers
allows access to all chassis and circuit components.
As a bench type instrument the modular design pro­vides mechanical stability even when several instru­ments are stacked together. The bench type instru­ment is readily converted for use in standard width

02056-l

Figure l-l. Model 214A Pulse Generator

l-l

Section I

Paragraphs l-5 to l-10

Model 214A

rack using hardware shipped with the instrument.

Paragraph 2-11 explains the details of converting to

either the rack or bench version,

l-5. INSTRUMENT APPLICATIONS.

l-6. With its variable pulse characteristics the

Model 214A is useful as a general purpose laboratory

or production line test instrument.

The high peak
current output available, 2 amps, is useful for testing
current driven devices such as magnetic memory
cores, high power modulators, and power amplifiers.

Fast rise and fall time combined with highpower out-

put pulses facilitate checking switching time of high

power semiconductors. The positiveor negative pulse
output, with identical characteristics, provides an

easy technique for checking either npn or pnp type

transistors. By gating the Model 214A output, a
burst of pulses may be obtained for making computer

logic measurements. The double pulse feature may
also be used for pulse resolution tests of amplifiers
and memory cores.

l-7. EQUIPMENT AND ACCESSORIES

AVAILABLE.

l-8. A complete line of electronic test equipment

is available from the Hewlett-Packard Company for

use in making test measurements with, or maintain­ing, the Model 214A. Also available are cables,

connectors, adapters and other accessory items for

use in various test or measurement applications.

For information on specific items, consult the &?

Catalog or your @ Field Engineer.

1-9. DIFFERENCES BETWEEN INSTRUMENTS.

l-10. The Hewlett-Packard Company uses a two-

section, eight-digit serial number to identify instru­ments (e.g. ~-00000). The serial number is located
on a plate attached to the instrument rear panel. The
first three digits are a serial prefix number, also
appearing on the first page of this manual, and the
last five digits identify a specific instrument. If the
serial prefix number of the instrument is higher than
that on the first page, change sheets included with the
manual will define differences between other instru-

ments and the Model 214A described herein. If the

change sheets are missing, your @J Field Engineer

can supply the information. Refer to Appendix I at
the back of this manual for changes required to adapt
this manual to an instrument with a lower serial
prefix.

Model 2 14A

SECTION II

PREPARATION FOR USE

2-1.

INIT

IAL INSPECTION.

2-2.

Upon receipt of the Model 214A, verify that

the contents are intact and complete as ordered.

Inspect the instrument for any physical damage such

as a scratched panel surface, broken knob or con­nector,
possible reshipment,
material if reusable (see Paragraph 2-15), until a
satisfactory operational check (Paragraph 5-3) is
completed. If damage is found, file a claim with
the freight carrier and refer to the warranty page in

this manual. Section V outlines the recommended

adjustment and troubleshooting procedures needed

for normal maintenance or recalibration.

2-3. AC POWER CONSIDERATIONS.

2-4. POWER SOURCE REQUIREMENTS.

2-5. The Model 214A may be operated from an ac

source of 115 or 230 volts (&lO%), at 50 to 60 cps.
With the instrument power cord disconnected, move
the slide switch (located on the rear panel) until the
desired voltage numbers (115 or 230) are visible. A
narrow-blade screwdriver may be used to operate
the switch. Fuse Fl (holder on rear panel) should be

3.2 amperes, slow-blow for 115~ operation or 1.6

amperes, slow-blow for 230~ operation.

2-6. THREE-CONDUCTOR POWER CABLE.

2-7. To protect operating personnel, the National

Electrical Manufacturers’ Association (NEMA) re-

commends that the instrument and cabinet be grounded.
The Model 214A is supplied with a detachable three-

conductor power cable which, when plugged into an
appropriate receptacle, grounds the instrument to
the power line ground. The round pin on the power
cable is the ground connection. To retain the pro­tection feature when operating the instrument from
a two-contact outlet, use a three-conductor to two­conductor adapter and connect the adapter wire to a

suitable ground.

2-B. VENTILATION REQUIREMENTS.
2-9.

GENERAL. The cooling fan and air filter are
located on the rear panel of the Model 214A. Leave
adequate clearance (at least 2 to 3 inches) behind and
at both sides of the instrument for free movement of
air. The path of air flow is through the filter and
intake fan then out of the perforated side covers. It
is important to keep the air intake area free of dust

and small particles which could clog the filter.
Section V provides maintenance information for fan

and filter. In a rack installation be sure that re­circulation of warm air within the rack cabinet does

not produce an ambient temperature high enough to
affect instrument operation.

02056-l

incurred in shipping. To facilitate

etc.,

keep the original packing

Paragraphs 2-1 to 2-1’7

Section II

2-10. COATING FILTER. Before placing the instru­ment in use, the air filter should be coated with a
filter adhesive preparation. A recommended pre-

paration is No. 3 Filter Coat, made by Research

Products Company, and available in sprayer cans at
heating-supply stores. This may also be obtained by
contacting your @ Field Engineer (see maps at back

of this manual) or by ordering directly from @

Customer Service. Hewlett-Packard stock number
is 3150-0002.

2-11. RACK/BENCH CONVERSION.

2-12. The Model 214A is shipped as a bench-type
instrument (even when ordered as a rack type) with

plastic feet and tilt stand in place. The @ modular

instrument enclosure system allows easy conversion

to either bench or rack

mode.

Refer to the appropri-

ate following procedure for conversion.

2-13. CONVERSION TO RACK MODEL.

a. Detach the tilt stand and all the plastic feet.
Tilt stand removes by pressing away from the front
feet. Remove feet by depressing metal release

button and sliding feet free.

b. Using a thin-blade tool, loosen and remove the

plastic trim strip (with adhesive back) from eachside
of the instrument (directly behind front handles).

Removal of strip exposes threaded nuts pressed in

the side casting.

c. Attach the rack-mounting flanges, with the screws
provided, in the space where the trim strip was
adhered. Each flange extends slightly below the
front panel when attached correctly.

d. If the instrument is to be placed in a rack above

or below another @ modular instrument, attach the
filler strip between the front panels. Insert Model

214A in the rack and secure flanges to rack.

2-14. CONVERSION TO BENCH.

a. Remove instrument from rack, detach rack­mounting flanges and filler strip, if used between

front panels.

b. Attach trim strip (in slots where rack flanges
were located), plastic feet, and tilt stand. A fifth
plastic foot at center-front of the instrument provides

extra stability when the Model 214A is stacked atop

another @ modular bench-type instrument.

2-15. REPACKAGING FOR SHIPMENT.
2-16. PACKAGING SUGGESTIONS.

2-17. To package an instrument for shipment, some
types of original packing materials may be reused,

or your @ Field Engineer will provide assistance in

obtaining suitable packaging. The types of original

2-l

Section II
Paragraphs 2-18 to 2-19

Model 214A

packing materials which may be reused are: (1) foam
enclosure pads, (2) cardboard layers separated by
foam supports, and (3) laminated cardboard cut to
desired packing shape. Original packing materials
which are a cardboard “accordion-like” filler are
not recommended for shipment since the useful
cushioning qualities are usually gone after one use.
If packing materials listed above are not available,
first protect the instrument surfaces with heavy
paper or sheets of cardboard flat against the instru-

ment. Then place instrument in a durable carton,

pad all sides with approximately 4 inches of new
packaging material designed specifically for package
cushioning, mark carton clearly for proper handling,
and insure adequately before shipping.

2-18. RETURNING FOR SERVICE OR REPAIR.

2-19. Contact your Hewlett-Packard Company Field

Office for shipping instructions. All correspondence

should refer to an instrument by model number and the
full (eight-digit) serial number.

2-2

02056-l

Model 214A

Section III

Paragraphs 3-l to 3-8

SECTION III

OPERATING INSTRUCTIONS

3-1. GENERAL.

3-2. The Model 214A is self-protected and no com­bination of front panel control settings or connections
to external circuits can damage the instrument, pro­viding the overload relay circuitry is operating pro­perly.
duty cycle specified in Table l-l are exceeded. The
limits and combinations of settings which result in an
overload indication are described in Paragraph 3-4.
Other specific operating considerations are given in
Paragraphs 3-7 and 3-9. Figure 3-3 illustrates and

explains the function of all the front panel fixtures.
The ac power connector, fuse, and line voltage switch
are on the rear panel. Proper fusesize is: 3.2 amps
slow-blow for 115~ and 1.6 amps slow-blow for 230~
operation. Setting line switch and other ac power
information is given in Paragraph 2-3.

3-3. OPERATING CONSIDERATIONS.
3-4. DUTY CYCLE LIMITATION.

3-5.
panel control settings. Duty cycle is defined as the
ratio of duration of pulse (i.e. pulse width) to the
total duration of one complete cycle. Figure 3-1
shows the relationship which determines the duty cycle.
The time for one cycle is defined as the period, and
the period is related to repetition rate by:

Thus the product of pulse width and frequency times
100 determines the percent duty cycle. For example
if INT. REP. RATE is set to l-10, VERNIER set to
give a rate of 6 kc (or if the external trigger rate is
6 kc), and PULSE WIDTH and VERNIER are set to
give a pulse 70 psec wide, the percent duty cycle is:

The same limits on duty cycle apply for external

An overload will be indicated if the limits on

Duty cycle of operation is determined by front

Period -

(70 x 10-6) (6 x 103) x 100 = 42%

1

Rep Rate

trigger operation or internal repetition rate. The
limits are 50% for PULSE AMPLITUDE settings of
10 volts or less, 25% on 20 volts amplitude, and 10%

on 50 to 100 volt amplitude. The maximum duty

cycle will decrease slightly at repetition rates slower

than 20 cps on the 5Ov and 100~ PULSE AMPLITUDE

ranges.
relay reacts if there were a higher average voltage
than that actually present.

3-6. If maximum duty cycle is exceeded for any
pulse amplitude, the front panel light, OVERLOAD,
will flash on and off and an internal relay will be heard

as a clicking sound. No damage will occur to the

instrument when this overload circuit is operating
properly. When an overload is indicated it may be

stopped by reducing either the frequency or the PULSE
WIDTH setting. Usually this may be done easiest by
turning the Width VERNIER counterclockwise, or by

reducing the Width range setting. In DOUBLE PULSE
operation the duty cycle limit is one half that for

PULSE ADVANCE or PULSE DELAY. The expression
for duty cycle using DOUBLE PULSE is given in

Figure 3-2.

At these slow repetition rates the overload

11 n r--/-

~-PEl%N--~

t------

P/EK&ENCY

-----I

r-------1

I

%DUTY CYCLE = ‘“‘&l”ob”‘” x 100

:

PULSE WIDTH X FREQUENCY X 100

Figure 3-l. Defining Pulse Characteristics

02056-l

I
I
I

I.--

z,..-.-

% DUTY CYCLE= 2 ’ PULSE W’DTH X 100

= 2 X PULSE WIDTH X FREOUENCY X 100

Figure 3-2. DOUBLE PULSE Operation

3-7. PULSE POSITION VS. RATE.

3-8. In either PULSE ADVANCE or PULSE DELAY

operation, the PULSE POSITION setting should always
be less than the period (i.e. 1 divided by the fre­qu ency) .
the period is:

and the PULSE POSITION range combined withVER­NIER setting should not exceed40 psec. For DOUBLE

For example if the repetition rate is 25 kc,

Period = 25 kc = 40 ysec

PERIOD

2141--*-

1

3-l

Section III

Figure 3-3

Model 214A

I- i

SLOPE.Allows setting for triggering to

1.
occur on either negative-going or positive­going slope of external trigger-source wave­form.

TRIGGER INPUT. Connector for external

2.
triggering signals.

3. EXT. TRIG. LEVEL. Sets voltage level on

external trigger-source waveform at which
triggering occurs.

4. GATE INPUT (+). Connector for gating volt-

age which then allows pulse outputs only when
input is at +8 volts or more; 40V maximum.

5. NORM./GATED. Set to GATED when the
duration of pulse output is to be controlled
by a gating voltage.

6. PULSE ADVANCE/PULSEDELAY/DOUBLE
PULSE. Set to PULSE ADVANCE for pulse

output before trigger output. Set to PULSE
DELAY for pulse output after trigger output.

DOUBLE PULSE gives two pulses atoutput.

7. TRIGGER OUTPUT polarity. Determines
polarity of trigger output pulse.

8. TRIGGER OUTPUT connector. Provides 10

volt synchronizing pulses across 1000 ohms.

9. OVERLOAD. Indicator lights when duty

cycle limit is exceeded.

10. PULSE OUTPUT polarity.
polarity of main pulse output.

11. PULSE OUTPUT connector. Provides out­put pulse with characteristics set by front
panel controls (see Table l-l for specifi-

cations).

3 4 6 i 6

Determines

IO II

12. POWER switch and indicator. Switch con­trols ac power to instrument; indicator lights
in ON position. 115-230 volt switch on rear

panel.

13. PULSE AMPLITUDE. Controls amplitude
range of pulse output.

14. VERNIER. Provides continuous overlapping

adjustment between setting of PULSE AMP­LITUDE and next lower range.

15. PULSE WIDTH. Changes limits of VER-

NIER control over output pulse width.

16. VERNIER. Provides continuous, semi­calibrated, adjustment between limits set

by PULSE WIDTH switch.

17. PULSE POSITION. Changes limits ofVER­NIER control over output pulse position with

respect to the trigger output pulse.

18. VERNIER. Provides continuous, semi-

calibrated, adjustment between limits set

by PULSE POSITION switch.

19. INT. REP. RATE. Changes limits of VER-

NIER control over internal repetition rate

circuit.

20. VERNIER. Provides continuous adjustment

between limits set by INT. REP. RATE

switch.

21. TRIGGER MODE. Selects mode of generat-

ing pulses. MANual push button, EXTernal
trigger source, or INTernal repetition rate.

22. MANUAL. Pushbutton provides singlepulse

output when TRIGGER MODE is set to MAN.

3-2 02056-2

_--...

Model 214A

Paragraphs 3-9 to 3-19

Section III

PULSE operation, the minimum allowable PULSE
POSITION setting depends on the PULSE WIDTHused;
this is explained in Paragraph 3-9.

3-9. MINIMUM SPACING WITH DOUBLE

PULSES.

3-10. In DOUBLE PULSE operation, the PULSE
POSITION control sets the spacing between the start

of the first pulse and the start of the second pulse.

For proper operation without affecting pulse shape,
there are minimum spacing limits between the two
pulses, and these limits depend on the PULSE WIDTH
setting.
between pulses is 1 psec. For other PULSE WIDTH
settings, the minimum spacing is 25% of the upper
limit of range selected. For example, if PULSE
WIDTH is set to 100-lK, the minimum spacing
between pulses is 25% of 1K microseconds, or 250
microseconds.
characteristics as set by the Model 214A controls in
DOUBLE PULSE mode. Note from Figure 3-2 that
the setting of PULSE POSITION and PULSE WIDTH
controls the actual spacing between pulses. The
spacing between pulses is then the PULSE POSITION
setting minus the PULSE WIDTH setting.

3-11. GATING OF PULSES.

3-12. By applying a positive signal voltage to the
GATE INPUT (+) connector and sliding the switch to
GATED, pulses will occur at the output only when the
gating signal is at +8 volts or greater. The maximum
gating signal amplitude is +40 volts. To ensure that
output pulses occur when the gate signal just reaches

+8v, a fast rise time input should be used. If a gating

sine wave signal is used, a larger amplitude (but less
than 40 volts peak) will generally provide better re­sults.
and repetition rate must be locked together. Figure
3-4 illustrates the result of gating the pulse output.

3-13. OPERATING PROCEDURES.
3-14. MANUAL TRIGGER MODE.
3-15. When TRIGGER MODE is set to MAN. and the

MANUAL button is pushed, a single pulse output will
occur. Other front panel controls are set to obtain

For a 0.05-l setting the minimum spacing

Figure 3-2 shows the output pulse

For synchronized pulse trains, the gating signal

the desired pulse characteristics. The same operating
considerations apply as explained in Paragraphs 3-4,
3-7, and 3-9. The maximum rate for pushbutton

pulses is 2 cps.

3-16. EXTERNAL TRIGGER MODE.

3-17. With TRIGGER MODE set to EXT., an external

triggering signal from dc to 1 MC with 0.5 volts peak

amplitude is required to generate pulses in the Model
214A.

proceed as follows:

to TRIGGER INPUT.

gering level on input waveform. Polarity of EXT.
TRIG. LEVEL must agree with SLOPE setting.

using an external gating signal.

DELAY/DOUBLE PULSE. PULSE ADVANCE or
PULSE DELAY means the output pulse will occur
advanced or delayed in time, with respect to the

trigger output pulse. DOUBLE PULSE provides two

pulses out at a rate determined by the TRIGGER
MODE circuits.

nect coaxial cable to external circuit being triggered.

these amplitudes are volts into a 50 ohm load at the

PULSE OUTPUT connector. The 100 v range will not

produce a pulse without the 50 ohm termination.

NIER. Observe duty cycle limit for amplitude range.

coaxial cable to external test circuit.

NIER as desired. With PULSE ADVANCE or PULSE

DELAY operation. PULSE POSITION setting is the
spacing between the pulse output and the trigger output
pulse. With DOUBLE PULSE, PULSE POSITION sets
the spacing between the two pulses.

position, width, and amplitude characteristics.

Refer to Paragraphs 3-4, 3-7, and 3-9 and

a. Set TRIGGER MODE to EXT. and connect signal

b. Select + or - SLOPE setting.
c. Set EXT. TRIG. LEVEL to obtain desired trig-

d. Set GATED/NORM. switch to NORM. unless

e. Select setting for PULSE ADVANCE/PULSE

f. Select polarity of TRIGGER OUTPUT and con-

g. Select PULSE AMPLITUDE range. Note that

h. Select PULSE WIDTH range and adjust VER-

i. Select polarity of PULSE OUTPUT and connect

j. Select PULSE POSITION range and adjust VER-

k. Adjust VERNIERS if necessary to obtain exact

nnnnnnn nnn

MODEL 214A PULSE OUTPUT

2 I

GATE INPUT SIGNAL

Figure 3-4. Gating Pulse Output

02056-3

1

214*-*-

3-18. INTERNAL TRIGGER MODE.

3-19. With TRIGGER MODE set to INT.. the Model
214A will generate pulses at a rate set by the INT.
REP. RATE range and VERNIER. This repetition
rate is adjustable from 10 cps to 1 MC. Refer to
Paragraphs 3-4, 3-7? and 3-9 and proceed as follows:

a. Turn instrument POWER switch to ON and allow

several minutes for warmup.

b. Set TRIGGER MODE to INT.

c. Set INT. REP. RATE range and VERNIER to
approximate position for frequency desired (max­imum frequency is fully clockwise).

d. Complete steps d through k of Paragraph 3-16.

3-3

El 00,

.4 /iSEC

+

0,

DELAY

CIRCUIT

V2028 B DL201 --o V203 El T202

0,

\

\

POSITION POSITION

MONOSTABLE

b-+ MULTIVIBRATOR -

V20lA,V202A,

VI048

--oI \-

0

,-. l

\

\

BLOCKING

OSCILLATOR

VZOIB 8 T201

\

TRIGGER

OUTPUT

BLOCKING

OSCILLATOR

-\
\

\

\ ’

<

\

-c* DIODE

<

/

\

[PULSE DELAY 1

lDOuBLE PULSE 1

\

\

\

1

CR208

, DIODE -

CR207

PULSE ADVANCE

\

\

,-

0

START

1

1 v204A 8. DL202 1 1 V205A 8 T203 1 1 1

I

PULSE

Q’ “‘;KING

1ATl-N

1 I

STOP SIGNAL

Figure

,;;;iR

V301 8. T301

1

I

4-l. Model 214A Block Diagram

BISTABLE

MULTIVIBRATOR

AND POWER

AMPLIFIER

v304, v305,0301

POLARITY

AND

ATTENUATION

Model 214A

Paragraphs 4-l to 4-12

SECTION IV

PRINCIPLES OF OPERATION

4-1. GENERAL. 4-7. MANUAL TRIGGER OPERATION.

4-2. The complete circuit operation is shown in
Figure 4-1.

lowing general sequence: a trigger pulse from the

rate circuit (VlOZ), functioning either as a Schmitt

trigger or an astable multivibrator, is applied to
blocking oscillator V103, which triggers both the
Position Multivibrator (V201A, VZOZA, V104B) and
blocking oscillator V203 for the trigger output pulse.
The position Multivibrator triggers Position Blocking
Oscillator V201B which in turn triggers both start

and stop pulse circuits.

are used to switch a bistable multivibrator-power
amplifier combination (V304, V305, Q301) which
forms the output pulse. The details of each block

are contained in the schematics, and the following

circuit description explains the operation of each

circuit, both as to basic type and to the part it plays
in the sequence of forming the output pulse.

4-3. INPUT AND RATE GENERATOR.

4-4. EXTERNAL TRIGGER OPERATION.

4-5. With TRIGGER MODE set to EXT. position, a

signal of at least 0.5 volts peak will cause Differential
Amplifier VlOl to amplify the difference between the
levels at the control grids, pins 2 and 7. TRIGGER
SLOPE switch SlOl routes the trigger input to one
grid of VlOl and also transfers the external trigger
level circuit of R105 to the other grid. Resistor R105

sets the grid bias which must be overcome by the
trigger input at the other grid to obtain an output at
the plate, pin 6 of V101. The output from VlOl is

coupled through S103A, through a low-impedance
network (DSlOl, R116, and C107), and S103B to R125

and the grid of V102.

The output pulse is formed by the fol-

The start and stop pulses

4-8. With TRIGGER MODE set to MAN. position,
V102 again functions as a Schmitt Trigger circuit as
in external operation, with the parallel RC network
R129-Cl10 coupling between plate and grid. When

MANUAL switch S102 is energized, the side of capaci­tor Cl06 toward the switch charges toward +150 volts
through R120. This positive-going, slow rising ex-

ponential voltage is coupled to the grid (pin 2) of V102

and the left half of the tube conducts. The right half
of V102 now cuts off and a positive pulse to +15OV is

the output coupled to the grid of V103.

4-9. INTERNAL TRIGGER OPERATION.

4-10. With TRIGGER MODE set toINT. position, V102

functions as an astable multivibrator. The free-

running rate of this circuit is controlled by range

capacitors, Cl13 through C117, couplingbetweenplate

(pin 1) and grid (pin 7), and by VERNIER, R137.
Breakdown diode CR101 sets the bias at the grid of
the left half of V102. This circuit has no stable state
and is always changing between two states: (1) left­half cutoff, right-half conducting or (2) left-half con­ducting, right-half cutoff. The rate at which this
changing of states occurs is primarily a function of
the capacitors between plate and grid since this de­termines the exponential rise and decay time of the
grid (pin 7). When the grid (pin 7) voltage rises
exponentially enough to cause the right half to conduct,
the output at pin 6 is about +125 volts. Then as the
voltage at pin 7 decays exponentially, the right half
cuts off and the output at pin 6 is at the supply voltage,
+15Ov. A regenerative action occurs as the right half

of V102 just starts to conduct and the left half starts

to cutoff: the increase in voltage at the plate (pin 1)
is coupled through the range capacitor to speed turn
on of the right half. Symmetry Adjust, R133, changes
the grid bias of pin 7 to nearly equal the bias at pin 2
making the two halves of the waveform equalin width,

Section IV

4-6. In external trigger operation, V102 functions
as a cathode-coupled binary, or Schmitt Trigger,

circuit. The plate to grid coupling network is from
pin 1 through S103B and the parallel RC combination,
R129-C110, to the grid, pin 7. The left half of V102
is normally off and the right half conducting so the
output at pin 6 is at a positive level (about 125 volts),
less than the +150 supply. As the signal at pin 2
becomes positive enough (upper hysteresis limit),
the left half of V102 conducts and regenerative action

cuts the right half off. When the input at pin 2 de­creases enough (lower hysteresis limit), the left half
of V102 is cut off and the circuit returns to the original
state. The output at pin 6 then is a positive pulse each
time the signal at pin 2 causes the left half to conduct,
and the rate at which this occurs is exactly that of
the external trigger signal (1 MC limit on input fre­quency). The output pulse from pin 6 is coupled
through Cl22 to pin 2 of Blocking Oscillator V103.

02056-2

4-11. TRIGGER BLOCKING OSCILLATOR.

4-12.

Tube V103 and transformer TlOl function as an
amplifier-blocking oscillator, when the output of
V102 is not being gated by the circuit of V104A (see
Paragraph 4- 13). Normal operation of the blocking
oscillator is as a monostable circuit being triggered
by an amplified signal. The left half of V103 amplifies
the positive pulse at its grid and the resulting plate

pulse is coupled through transformer TlOl, reversed

in phase, to the grid of the right half. This puts the
right half of V103 in conduction and a regenerative
action drives the plate (pin 6) voltage down abruptly
and the grid voltage (pin 7) abruptly positive. Next
the action reverses and as the plate voltage becomes
more positive, the grid goes negative and regeneration
turns the tube off agian. The output is taken from the
cathode (pin 8) and the pulse drives other circuits de-

pending on which pulse mode (advance, delay, or

double) is used (see Paragraph 4-15).

4-l

Section IV
Paragraphs 4-13 to 4-30

Model 214A

4-13. GATE INPUT CIRCUIT.

4-14. When switch S105 is in the NORM. position,
Gate Cathode Follower V104A is conducting enough so
CR103 is biased off, and the pulse at pin 2 of V103 is

unaffected in operation.

However, when S105 is moved

to GATED, V104A is cut off, biasing the cathode of
CR103 more negative than its anode and CR103 con­ducts, changing V103 input impedance so the rate pulse
does not develop enough signal to trigger the blocking
oscillator. By applying a positive signal of at least
8 volts (but less than 40) V104A will again conduct,
cutting off CR103 and the pulse at V103 triggers the

blocking oscillator (explained in Paragraph 4-l 1).

4-15. ADVANCE, DELAY, DOUBLE PULSE

MODES.

4-16. Three modes of pulse operation are obtained
by switching the timing pulse from the Trigger Block­ing Oscillator V103 through combinations of circuits.
These circuits are described below first in terms of
general operation (Paragraphs 4-17 through 4-26)

and second, as each is used in either PULSE AD-

VANCE, PULSE DELAY, or DOUBLE PULSE (Para-

graphs 4-27 through 4-32).

4-17. PULSE POSITION CIRCUIT.

4-18. POSITION MULTIVIBRATOR. The circuits of

tubes V201A and V202A form a monostable multi-

vibrator which controls the position relationship be­tween the output pulses and trigger output or between
both output pulses in DOUBLE PULSE operation. This
multivibrator substitutes cathode-coupling with a

common cathode resistor for the usual coupling be­tween plate of V202A and grid of V201A, but still is
a monostable circuit. The width of the multivibrator
pulse is controlled by range capacitors, C201 through

C205, and the VERNIER control R207. By controlling

the time V202A is cut off, with the range capacitor

and VERNIER, the delay before triggering theposition
blocking oscillator V201B is also controlled (V201B

is triggered as V202A starts conducting; see Para-

graphs 4- 19). Tube V104B acts as a screen biasing

supply for V202A.

The output at pin 9 of V202A is a
variable width positive pulse which is coupledthrough
C209 to pin 6 of V201B.

4-19. POSITION BLOCKING OSCILLATOR. The sig­nal from V202A triggers Position Blocking Oscil­lator V201B at the plate. This signal is coupled
through T201 to the grid (pin 7) and the circuit functions
in the same way as V103 right half, described in
Paragraph 4-11. The output is takenfromthe cathode

as a positive pulse about 30 volts in amplitude.

4-20. PULSE WIDTH MULTIVIBRATOR.

4-21.

The circuits of tubes V206A and V204B form a
monostable, cathode-coupled multivibrator, and the
circuit functions the same as that described in Para­graph 4-18. The time for whichV204Bremains cutoff
is determined by range capacitors C225 through C229
and VERNIER, R257. The output at pin 9 of V204B is

used to drive the stop pulse blocking oscillator V206B

(see Paragraph 4-26). The time delay obtained from
the width multivibrator thus determines how long since

4-2

the output pulse started before the stop pulse blocking
oscillator returns the pulse to zero (this time is the
pulse width).

4-22. TRIGGER OUTPUT BLOCKING

OSCILLATOR.

4-23. Tube V203 and transformer T202 function as an

amplifier-blocking oscillator in a nearly identical
circuit as described in Paragraph 4-11 for the circuit
of v103.

A signal at pin 2 of V203 is amplified and
coupled from the plate through T202 to the grid of the
right half. For a positive trigger output, S203 routes

the cathode signal to 5201 and for a negative trigger
out, S203 routes the signal from pin 1 of T202 to 5201.

4-24. START-STOP PULSE BLOCKING

OSCILLATORS.

4-25. START PULSE BLOCKING OSCILLATOR. The
circuit of V205A and T203 is another blocking oscil­lator working the same way as described in Para­graph 4-11. The signal which triggers V205A plate
has been amplified by V204A and delayed by 0.14
microseconds by DL202. The output from thecathode
of V205A is a positive pulse of about 35 volts which
drives the input to V301.

4-26. STOP PULSE BLOCKING OSCILLATOR. The
blocking oscillator of V206B and T204 also is of the
same type already described in Paragraph 4-11. The

signal to trigger V206B comes from the width multi­vibrator circuit when V204B starts conducting. The
output from the cathode of V206B is a positive pulse
of about 35 volts and it drives the input to V303, the

Stop Pulse Spiker.

4-27. PULSE ADVANCE TIMING LOGIC.

4-28. Figure 4-2 shows the timing logic for PULSE

ADVANCE mode of operation. The timing pulse from

V103 goes directly through diode CR207 to the start-

stop pulse circuits (through V204A to V205A, and

through the width multivibrator to V206B). The timing

pulse also goes through CR201 to the grid of V201A

to operate the position multivibrator. The resulting

waveform from the position blocking oscillator is

coupled through C216 to pin 2 of V203. Now the posi-

tion multivibrator is used to effectively delay the trig-

ger output, i.e. the main pulse output occurs in

advance of the trigger.

The pulse width multivibrator

and start-stop pulse blocking oscillators function the
same as described previously.

4-29. PULSE DELAY TIMING LOGIC.

4-30. Figure 4-3 shows the timing logic for PULSE

DELAY mode of operation. The V103 timing pulse

goes directly to Cathode Follower V202B andis taken,
delayed by 0.4 microseconds by DL201, throughS202B
to the trigger output blocking oscillator, to cause a
trigger output pulse. The timing pulse has also trig­gered theposition multivibrator circuit throughCR201.
The output from V201B goes through CR208 and S202B
to the width multivibrator and start-stop blocking
oscillators.

This time the position multivibrator has
been used to effectively delay the start of the pulse
output with respect to the trigger output.

02056-l

Model 214A

Section TV

Paragraphs 4-31 to 4-36

RATE

GVEi%%R.

POSITION

V%A

P”X!oN

V2blB

TRIGGER

OUT PUT

PULSE
WIDTH

M.V.

V204B

STOP

svp:oK3E

PULSE

OUTPUT

OUTPUT
AS SEEN
)N SCOPE

SEQUENCE OF EVENTS

PULSE ADVANCE

t‘l

1

I

I
I
,

I
I
I

h

r

1

l

t

1

l

t

t

w

t

SEQUENCE OF EVENTS

PULSE DELAY

to

RATE

GvEIYiRR.

Rk%:

VI03

rRLGGER
DUTPUT

‘OSITION

M.V.

V202A

‘“sB!To!oN

V201B

ssTp?KRET

v30 I

2%

M.V.

V204B

STOP

SPIKE

v303

PULSE

OUTPUT

OUTPUT
AS SEEN
IN SCOPE

b

t5

1 1

h

h

f

h

l

t

b

t

c

b

t

t

b

t

b

Figure 4-2. PULSE ADVANCE Timing Sequence Figure 4-3. PULSE DELAY Timing Sequence

4-31. DOUBLE PULSE TIMING LOGIC.

4-32. Figure 4-4 shows the timing logic for DOUBLE
PULSE mode of operation. The V103 timingpulse goes
directly through CR201 to the position multivibrator

and directly through CR207 to the start pulse and stop
pulse circuitry (i.e. through V204A and also through
the width multivibrator). This causes one pulse out­put. Then the delayed timing pulse from the position

multivibrator and blocking oscillator comes through

CR208 to trigger the start-pulse circuitry a second
time and another pulse output is formed. The delayed
timing pulse from V201B determines the position in
time at which the second pulse occurs (i.e. the time
between leading edge of pulses). The pulses have the

same variable width since both are controlled by the
width multivibrator.

4-33. FORMING AND CONTROLLING

OUTPUT PULSE.

4-34. The fast rise and fall time of the output pulse is

achieved by rapid charging of the input capacitance

represented by the grid of tubes V304 and V305, then

02056-l

rapidly discharging this capacitance to end the pulse.
A large current spike waveform is used and the output
tubes are held on during the pulse by a bistable type
multivibrator circuit. The amplitude of the output

pulse is controlled by varying the output tube screen

supply, by changing the bias levels of the output cir­cuits, and some attenuation at the output,

4-35. START PULSE SPIKER.

4-36. The positive pulse from V205A is coupled
through L301, C301, and CR301 to the control grid of
v301. The input circuit of V301 changes the dc level
of the start pulse and smoothes the transition from
triggered on state to the steady stateduring the output

pulse. Diode CR301 discharges the input circuit after

the start spike occurs and C302 discharges through
R301 to increase the fall time of the spike. The rise
time of the spike is sharpened by clipping diode CR303.
Tube V302A is a screen supply for V301. The output
of V301 is a current spike which is increased to about

0.5 amp by current step-up transformer T301 and
coupled to the input circuit of V304/5 to charge

input capacitance.

up

the

4-3

Section IV
Paragraphs 4-37 to 4-44

Model 214A

SEQUENCE OF EVENTS

DOUBLE PULSE

h

P°K!oN

I

2@ START

SVP21E

PULSE
*K”

v2oie

2~~~r:p h L

v303

PULSE

OUTPUT

Figure 4-4. DOUBLE PULSE Timing Sequence

1
I

214&--B-,

spike input. The steady state cutoff bias of V304/5 is
set by a voltage divider network including breakdown
diode CR326. To keep the output tube conducting after
the start pulse, CR326 is taken out of the breakdown
area by transistor Q301. Transistor Q301 is triggered
on by the other winding of T301 (pins 1 and 2) and held
on by bias developed across CR327 and CR328. This
clamps the collector voltage of Q301 to the emitter,
reducing CR326 voltage to less than breakdown. With
Q301 conducting, V302B now supplies a steady 11 ma
current to keep diodes CR324/5 conducting, holding
V304/5 on.

Then to turn V304/5 off and end the
output pulse, the negative spike from T302 through
the top winding (pins 1 and 2) discharges the input
capacitance rapidly and the other transformer winding

(pins 3 and 4) turns Q301 off. This restores the bias
on CR326 and the circuit returns to its original state,
ready for the next start spike from V301. The output
pulse is taken across a 50 ohm resistancein the plate

circuit of V304/5 for all ranges except 100~. This

50 ohm source impedance, consisting of R405 through
R408 in parallel, absorbs reflections from an external
system mismatch.

4-41. PULSE OUTPUT AMPLITUDE CONTROLS.

4-42. The circuits changedby switch S401 control the
output pulse amplitude in various ways. s401c

switches different breakdown diodes (CR320-322) into
the control grid circuit of the output tubes. S401D

changes the bias on screen supply tube V302A in the

start pulse spiker circuit. S401A and S401B are in

the screen supply for the output tubes and this circuit

also affects the pulse amplitude.

Increasing the

Amplitude VERNIER R360, charges C325 from the

cathode of V307 for a quick response to an increase
in control voltage. To get a quick response for a
decrease in control voltage, V308 discharges C325.
Other sections of S401, at the output, switch in
attenuator resistors on lower pulse amplitudes.

4-37. STOP PULSE SPIKER.

4-38. The positive pulse from V206B is coupled
through L303, and CR308 to the control grid of V303.
The input circuit of V303 is nearly identical to that of
V301 and the same result is obtained in a negative

current spike at the plate. The output of V303 is

coupled by current step-up transformer T302, but

reversed in phase to that from T301 which initiated
the pulse, to the input circuit of V304/5 to discharge
the input capacitance.

4-39. PULSE OUTPUT CIRCUIT.

4-40. Parallel output tubes V304/5 are turned on by

the current spike from the top winding (pins 3 and 4)
of T301 and then held on by a type of bistable multi­vibrator circuit which includes the output tubes.

Diodes CR324 and CR325 sharpen the rise time of the

4-4

4-43. REVERSING PULSE POLARITY.

4-44. Either positive or negative output pulses are

obtained merely by reversing the connections between

center conductor and shield of the coaxial cable car­rying the pulse. Switch S402 reverses these con­nections. This method of reversing polarity is

pas-

sible because a floating power supply is usedallowing
the ground reference to be established at any level.

Inductors L308, L401, and L402 isolate the voltage

supply and prevent the supply from bypassing the

pulse.

Negative pulse outputs occur when the plates
of the output tubes drive the center conductor of the
coaxial cable and the shield is tied to the OV, isolated
supply reference. Positive pulses occur by reversing
these connections and placing the center conductor
at the OV isolated reference voltage.

02056-l

.l.-l-_. .--”

-_

Model 214A

Paragraphs 5-l to 5-7

Section V

SECTION V

MAINTENANCE

5-1. INTRODUCTION.

5-2. This section covers maintenance, trouble­shooting, and adjustment of the Model 214A Pulse
Generator. The performance check, Paragraph 5-3,
may be used in incoming inspection or after adjust­ments have been made to verify that the instrument
meets its specifications (Table l- 1).

5-3. PERFORMANCE CHECK.

5-4. The performance check is intended to deter­mine whether or not the instrument is operating within
its specifications.
to Paragraph 5-17.

If adjustment is necessary, refer

Test equipment recommended

for the performance check is listed in Table 5-1,

items 1 through 13. Similar instruments having the

listed characteristics may be substituted.

5-5. EXTERNAL GATING.

a. Connect Model 214A PULSE OUTPUT to High

Frequency Oscilloscope Channel A INPUT,

b.

Connect external Power Supply to Model 214A

GATE

INPUT.

C.

Set Model 214A:

INT. REP RATE. . . . . . . . . . . . . l-10

Int. Rep. Rate VERNIER

fully cw

TRIGGER MODE. . . . . : : : : : : . . . INT

GATE INPUT . . . . . . . . . . . . . GATED

PULSE WIDTH. . . . . . . . lo- 100

Width VERNIER . . . . . . . : : : : Midrange

PULSE AMPLITUDE . . . . . . .

PULSE POSITION . . . . . . . . . .

2 VOLTS

lo- 100

Position VERNIER. . . . . . . . . . fully cw

d.

Set Oscilloscope and Plug-In:
SWEEP TIME. , . ,
Channel A SENSITIVITY : : : .

TRIGSOURCE . . . . . . . . . : : . . .

20 &SEC/CM

1 V/CM

INT

e. Increase voltage output of Power Supply from 0
volts until 214A gates on. Gating voltage should be
8 volts or less.

5-6. EXTERNAL TRIGGERING.

Connect output of Audio Oscillator to Model 2 14A

a.

TRIGGER INPUT.

b. Connect Model 214A PULSE OUTPUT to Oscillo-

scope Plug-In Channel A INPUT.

c. Set Model 214A:

PULSE AMPLITUDE. . . . . . .

10 VOLTS

Amplitude VERNIER . . . . . . . . . . . . cw

TRIGGER MODE . . . . . . . . . . . . . EXT

PULSE WIDTH . . . .

.05-l

WidthVERNIER . . . . . ...:::... 3

d. Set Oscilloscope and Plug-In:

Channel A SENSITIVITY 2v/cm with 50 ohm-

load or 5v/cm without 50 ohmload

SWEEP TIME . . . . . . . . . . 0.1 psec/cm

TRIG SOURCE . . . . . . . . . . . . . . INT

e. Set Oscillator frequency to 200 kc andOscillator

amplitude for l/2 volt peak-to-peak.

f. Model 214A shouldtrigger on both + and - slope

by adjusting EXT TRIG LEVEL.

5-7. PULSE AMPLITUDE AND WIDTH.

a. Connect aBNC Tee to High Frequency Oscillo-

scope Plug-In Channel A INPUT. A 50-ohm, 1%
resistor witharating of at least 10 watts (such as the
hp 50-ohm load recommended in Table 5-1, Item 10)

should be connected as a load to the Tee. Connect the
Tee to the Model 214A PULSE OUTPUT with a BNC
to BNC cable.

b. Connect Oscilloscope TRIGGERINPUT toMode

214A TRIGGER OUTPUT with BNC to BNC cable.

c. Set Model 214A:

INT REP RATE. . . . . . . . . . .

. Ol-. 1

Int. Rep. Rate VERNIER. . . . . . Midrange

PULSE POSITION . . . . . . . . . . . l-10

Position VERNIER . . . . . . . . . . . . . 1

PULSE WIDTH . . . . . . . . . . . lK- 10K

Width VERNIER. . . . . . . . . . . fully ccw

PULSE AMPLITUDE . . . . . .

100 VOLTS

Amplitude VERNIER . . . . . . . . . fully cw

TRIG MODE. . . . . . . . . . . . . . . . INT

d. Set Oscilloscope and Plug-In:

Channel Selector . . . . . . . . CHANNEL A

Channel A SENSITIVITY . . . . .

SWEEP TIME . . . . . . .

20 V/CM

0.1 MSEC/CM

Int SWEEP MAGNIFIER . . . . . . . . . . Xl

TRIG SOURCE . . . . . . . . . . . . . . EXT

e. There should be at least 100 volts (5 cm) of

vertical display.

f. Set Model 214A PULSE WIDTH to .05-l.

PULSE POSITION . . . . . . . . . . . . O-l

Pulse Position VERNIER . . . . . . . . CCW

g. Set Oscilloscope:

SWEEP TIME. . . . . . . . . 0.1 /JSEC/CM

Int SWEEP MAGNIFIER . . . . , . . . . X10

h. There should be at least 50 nanoseconds (5 cm)

of horizontal display measured at half amplitude of

pulse.

i. Set Model 214A:

PULSE AMPLITUDE , . . . . . 0.2 VOLTS

PULSE WIDTH . . . . . . . . . . .

lK- 10K

Width VERNIER . . . . . . . . . . . fully cw

Rep Rate VERN . . . . . . . . . . . fully ccw

j. Set Oscilloscope and Plug-In:

Channel A SENSITIVITY . . . . . 05 V/CM

SWEEP TIME. . . . . . . . .

2 I&EC/CM

Int SWEEP MAGNIFIER . . . . . . . . . . Xl

k. There should be at least lOmilliseconds (5 cm)

of horizontal display.

m. Set Model 214A Amplitude VERNIER fully ccw.

02056-3

5-l

Section V
Paragraph 5-8

Model 214A

Table 5-l. Equipment Required for Tests and Adjustments

Item

Equipment Name or Part Req’d Required Ref. Para.

1 Power Supply

Model

‘@ 723A

No.

1 Performance 5-5

Check

Audio Oscillator c@ 200CD 1 Performance 5-6 0.5 volt peak-to-peak,

Check 200 kc

Variable Attenuator @ 355D

1 Performance 5-12 thru 5-14 50-ohms,

Check

Sampling Oscillo- @ 185B

scope and Plug-in

‘@ 187B

5 50 -ohm Load ~$3 908A 1

1 Performance 5-13 thru 5-16 800 MC Bandwidth, dual

1. Check

Performance 5-13, 5-14 Type N connector, 50

Check & Adj ohms, SWR<l. 05, l/2 W

6 50-ohm Tee @ 10204B

1

Performance 5-13 thru 5-16 Type N 50 ohm Tee for

Check

7 BNC to Type N @10122A 1 Performance

Cable

Check male, 50 ohms * l/2 ohm

8 BNC to Dual Banana @llOOlA 1 Performance 5-6

Cable

Check 50 ohm cable

Required

Characteristics

At least 8V output

120 db attenuation

channel, Sensitivity
5 mv/cm

Sampling Oscilloscope
Probe

5-13 thru 5-16 Type N male to BNC fe-

BNC male to dual banana

9 BNC Female to Type N@ 1250- 1 Performance 5-15 BNC female to Type N

N Male Adapter

0067 Check male

10 50-ohm Load @5060- 1 Performance 5-7 thru 5-12 50 ohms, l%, 20watts

0426 Check

11 50 ohm Tee @1250- 1 Performance 5-7 thru 5-11; BNC male to BNC female

0072 Check and 5-26 to BNC female

Adjustments

12 BNC to BNC Cable @10503A 2 Performance 5-7 thru 5-14; BNC male to BNC male

Check and 5-26, 5-2’7 50 ohm Cable
Adjustments

13

High Frequency @ 175A 1

Oscilloscope, Plug- c@ 1750B 1
Ins and Probes

14

DC Voltmeter @412A

@1780A 1

Performance 5-5 thru 5-12; 40 MC Bandwidth, dual

Check and 5-23 thru5-27 channel
Adjustments

1

Adjustments 5-21, 5-26 Range 0 - 600 volts,

accuracy 1%

15 DC Milliammeter ~$3 428B 1 Adjustments 5-25 Range 0 - 50 ma, clip on

Probe, + 3% accuracy

n, There should be 1. 6 cm ( 80 mv ) or less of

vertical display.

5-8. PULSE POSITION.

a. Connect a BNC Tee to Oscilloscope Plug-in

Channel A INPUT. Connect 50-ohm load (at least

10 W) to Tee. Connect the Tee to the Model 214A

PULSE OUTPUT with a BNC to BNC cable.

b. Connect a BNC Tee Oscilloscope TRIGGER
INPUT. Connect the Tee to the Model 214A TRIGGER
OUTPUT with BNC to BNC cable. Connect the Tee to

Oscilloscope PLUG-in Channel B INPUT with BNC to
BNC cable.

5-2

c. Set Model 214A:

PULSE AMPLITUDE ......

a ... 10 VOLTS

Amplitude VERNIER ........... fully

PULSE WIDTH ............... lo- 100

Width VERNIER .............. fully ccw

TRIGGER OUTPUT .... ,

........ , , .. +

PULSE OUTPUT.. ................. +

PULSE POSITION .............. lo-100

Position VERNIER ............. fully ccw

ADVANCE/DELAY/DOUBLE . . PULSE DELAY

INT. REP. RATE ...............

Int. Rep. Rate VERNIER ......... fully

02056- 3

ccw

l-10

ccw

---._-- --

Model 214A

Section V

Paragraphs 5-Q to 5-11

d. Set Oscilloscope and Plug-In:

Channel A SENSITIVITY , . . . . . . . . 1 V/CM

Channel B SENSITIVITY . , . , . . . . . 5 V/CM

Channel Selector . . . . . . . . . . . ALTERNATE

TRIGGERSOURCE............. EXTAC

TRIGGER SLOPE. . . . . . . . . . . . . . . . . . . +

SWEEP TIME . . . . . . . . . . . . . 10 @EC/CM

Int SWEEP MAGNIFIER . . . . . . . . . . . . . Xl

e. Position Channel A and Channel B traces on

Oscilloscope graticule.

f. By adjusting Model 214A Position VERNIER
from fully ccw to fully cw, the pulse on Channel A
should sweep 100 p set (10 cm).

g. Reverse cables to Model 214A PULSE OUTPUT

and TRIGGER output.

h. Set ADVANCE/DELAY/DOUBLE to PULSE AD-

VANCE.

i. By adjusting Model 214A Position VERNIER

from fully ccw to fully cw the trigger spike displayed
on Channel A should sweep 100 p set (10 cm).

j. Reverse cables to Model 214A PULSE OUTPUT

and TRIGGER OUTPUT (original position).

5-9. DOUBLE PULSE AND MANUAL

TRIGGERING.

a. Connect a BNC Tee to Oscilloscope Plug-in Chan-

nel A INPUT. Connect 50-ohm load (10 ,W) to Tee.

Connect the Tee to the Model 214A PUISE OUTPUT

with a BNC to BNC cable.

b. Connect Oscilloscope TRIGGER INPUT to the

Model 214A TRIGGER OUTPUT with BNC to BNC

cable.

c. Set Model 214A:

PULSE AMPLITUDE . . . . . . . , . . . . .

10 V

Amplitude VERNIER. . . . . . . . . . , . . fully cw

TRIG. MODE. . . . . . . . . . . . . . . . . . . . INT.

PULSE WIDTH . . . . , . . . . . . . . . . . . .05- 1

Width VERNIER. . . . . . . . . . . . . . . . . . . 3

PULSE POSITION . . . . . . . . . . . . . . l-10

Position VERNIER . . . , . . . . . . . . . fully cw

ADVANCE/DELAY/DOUBLE . DOUBLE PULSE

d. Set Oscilloscope and Plug-In:

Channel Selector . . . . . . . . . . . CHANNEL A

Channel A SENSITIVITY . . . . , . . . . 2 V/CM

SWEEP TIME . . . . . . . . . . . , . . 1 pSEC/CM

Int SWEEP MAGNIFIER . . . . . . . . . . . . . Xl

e. Adjust Model 214A Position VERNIER fully ccw.
Spacing between pulses should be 1 psec (lcm) or
less.

f. Set Model 214A TRIGGER MODE to MAN.
position.

g. One complete cycle should be observed on oscil-

loscope CRT each time MANUAL push button is

pressed.

5-10. INTERNAL REP RATE.

a. Connect a BNC Tee to Oscilloscope Plug-In

Channel A INPUT. Connect 50-ohm load (.lO W) to Tee.

Connect the Tee to the Model 214A PULSE OUTPUT

with a BNC to BNC cable.

02056- 4

b. Connect Oscilloscope TRIGGER INPUT to the
Model 214A TRIGGER OUTPUT with BNC to BNC
cable.

Set Model 214A:
PULSE AMPLITUDE.

Amplitude VERNIER.
PULSE WIDTH.
Width VERNIER.

...............

............... fully cw

...........

........... fully cw

10 VOLT

lK- 10K

PULSE OUTPUT.. ................. +

INT. REP. RATE. .............

Rate VERMER
PULSE POSITION

...............

................

.Ol - .l

fully ccw

Q-1

Position VERNIER ............. fully ccw

ADV/DELAY/DOUBLE ..... PULSE DELAY

Set Oscilloscope and Plug-In:

Channel Selector . . . . . . . . . . . CHANNEL A

Channel A SENSITIVITY . . . . . . . , . . XV/CM

SWEEP TIME . . . . . . . . . . . . . 20 MSEC/CM

There should be no more than 2 pulses displayed

in 10 cm of sweep.

f.

Set Model 214A:

PULSE WIDTH . . . . . . . . . . . . . . . .05 - 1

Width VERNIER. . . . . . . . . . . . . . . . . . .

INT. REP. RATE. . . . . , . . . . . . . . 100 - 1K

Int. Rep. Rate VERNIER . . . . . . . . . . fully cw

Set Oscilloscope SWEEP TIME to 1 ysec/cm.

g.
h.

At least 10 pulses should be displayed in 10 cm

of sweep.

5-11. DUTY CYCLE.

a. Connect a BNC Tee to Oscilloscope Pl<g-in
Channel A INPUT. Connect 50-ohm load (10 W) to
Tee. Connect the Tee to the Model 2 144 PULSE OUT­PUT with a BNC to BNC cable.

b. Connect Oscilloscope TRIGGER INPUT to the
Model 214A TRIGGER OUTPUT with BNC to BNC
CABLE.

C.

Set Model 214A.

TRIGGER OUTPUT
TRIGGER MODE

PULSE WIDTH.

..................

.................

INT.

................ 10-100

Width VERNIER. .............. fully ccw

INT. REP. RATE
Rate VERNIER

............... 1 - 10

...............

fully ccw

PULSE OUTPUT ...................

PULSE AMPLITUDE

Amplitude VERNIER,

PULSE POSITION
Position VERNIER

d.

Set Oscilloscope and Plug-in:
Channel Selector
Channel A SENSITIVITY

Channel A INPUT.
TRIGGER SLOPE.
TRIGGER SOURCE.
SWEEP TIME

.............

Int SWEEP MAGNIFIER
Adjust Position VERNIER until leading edge of

e.

pulse lines up with first vertical line of Oscil-

first

.......... 10 VOLTS

...........

fully cw

............. 10 - 100

.............

fully ccw

........... CHANNEL A

..........

.................

2V/CM

DC

..................

...............

EXT.

16 @KC/CM

............. Xl

loscope graticule.

5-3

3

+

-

+

Section V
Paragraphs 5-12 to 5-14

Model 214A

f. Adjust Int. Rep. Rate VERNIER until leading

edge of second pulse lines up with last vertical line

of Oscilloscope graticule.

g. Adjust width VERNIER; no overload should

occur until pulse width is at least 50 psec (5 cm).

h. Set:

Model 214A Width VERNIER . . . . . . fully ccw

Model 214A PULSE AMPLITUDE . . 20 VOLTS

Oscilloscope Channel A SENSITIVITY

. . . . . . . ..**............

5 V/CM

i. Adjust width VERNIER; no overload should

occur until pulse width is at least 25 psec (2.5 cm).

j. Set:

Model 214A Width VERNIER. . . . . , , fully ccw

Model 214A PULSE AMPLITUDE . . 50 VOLTS
Oscilloscope Channel A SENSITIVITY

. . . .

10 V/CM

Osciil&cbpd &V&&‘&ME : : . . . 2 kSEC/CM

k. Adjust width VERNIER; no overload shouldoccur

until pulse width is at least 10 psec (5 cm).

m. Set Model 214A PULSE AMPLITUDE to 1OOV.

With pulse width at 10 psec (5 cm) the Model 214A

should not overload.

TRIGGER SLOPE. . . . . . . . . . . . . . . . . . . -

TIME SCALE. . . . . . . . . . . . . . . 1 @EC/CM

TIME SCALE MAGNIFIER . . . . . . . . . . Xl0

c. Connect PULSE OUTPUT to the 120 db Variable

Attenuator with BNC to BNC cable.

d. Connect the Attenuator output to the Model

10204B 50-ohm Tee with a BNC to type N cable.

e. Connect the Tee to Channel A probe of Sampling

Oscilloscope.

f. Terminate the Tee with 50-ohm load (I/2 watt).

g. Connect Model 214A TRIGGER OUTPUT to

Sampling Oscilloscope trigger INPUT.

h. Set Attenuator to 20 db.

i. Obtain 10 cm of vertical deflection by adjusting
Attenuator and Sampling Oscilloscope vertical sensi­tivity controls.

j. Adjust DELAY control of Sampling Oscilloscope
for 3 cm of delay on screen as shown in Figures 5-I

and 5-2.

OVERSHOOT,

,PULSE TOP VARIATIONS

5-12. PULSE DROOP.

a. Set Model 214A:

INT. REP. RATE . . . . . . . . . . . . . . .

Rate VERNIER . . . . . . . . . . . . . . . . . .

PULSE AMPLITUDE . . . . . . . . . . . . . .

Amplitude VERNIER . . . . . . . . .

.Ol-.1

ccw

50V

5ov output

PULSE WIDTH . . . . . . . . . . . . . . . . lK-1OK

b. Set Oscilloscope and Plug-in:

SWEEP TIME 0 . . . . . . . . . . . .

VERTICAL SENSITIVITY . . . . . . .

I MSEC/CM

5 V/CM

c. Connect the Model 214A PULSE OUTPUT to the

Oscilloscope vertical INPUT using BNC to BNC cables

and terminated with a 50 ohm (1Ow) load.

d. Adjust Oscilloscope SENSITIVITY VERNIER to

obtain 6 cm of vertical deflection.

e. Adjust Model 214A width VERNIER until the

pulse width is 5 msec (5 cm).

f. Pulse droop should be less than 3.6 mm.

5-13. OVERSHOOT, PRESHOOT, AND PULSE

TOP VARIATION.

a. Set Model 214A:

PULSE AMPLITUDE . . . . . . . . . . 10 VOLT,C:

Amplitude VERNIER

PULSE WIDTH . . . . . . . . . . . . . . . .

1ov output

.05- 1

Width VERNIER. . . . . . . . . . . . . . . Midrange

MT. REP. RATE . . . . . . . . . . . . . . . lo-100

Rate VERNIER . . . . . . . . . . . . . . . . . . ccw

TRIGGER OUTPUT . . . . . . . . . . . . . . . . . -

b. Set Sampling Oscilloscope:

CHANNEL SELECTOR .,......CHANNELA

VERTICAL SENSITIVITY. . . . . . . 100 MViCM

TRIGGER . . . , . . . . . . . , . . . EXT NORMAL

5-4

J-i++

PRESHOOT

Figure 5-l. Positive Pulse Shape 1OV Amplitude

k. Positive and Negative pulse overshoot should be

less than 5 mm (5%).

m. Positive and Negative pulse preshoot should be

less than 2 mm (2%~).

n. Positive and Negative pulse top variation should

be less than 4 mm (4%).

5-14. RISE TIME AND FALL TIME.

a. Connect PULSE OUTPUT to Attenuator with

BNC to BNC cable.

b. Connect the attenuator output to the Model 10204B

50-ohm Tee with a BNC to type N cable.

c. Connect the Tee to Channel A probe of Sampling

Oscilloscope.

02056- 5

Model 214A

Section V

Paragraph 5 - 15

Figure 5-2. Negative Pulse Shape 1OV Amplitude

d. Terminate the Tee with 50-ohm load (l/2 W).
e. Connect Model 214A TRIGGER OUTPUT to

Sampling Oscilloscope trigger INPUT.

f. Set Model 214A:

PULSE WIDTH . . . . . . . . . . . . . . . .

Width VERNIER. . . . . . . . . . . . . . . midrange

INT. REP. RATE.. . . . . . . . . . . . . .

lo-100

Rate VERNIER . . . . . . . . . . . . . . . Midrange

TRIGGER OUTPUT . . . . . . . . . . . . . . . . . +

PULSE AMPLITUDE . . . . . . . . . . 50 VOLTS

Amplitude VERNIER . . . . . . . . .

5ov output

PULSE POSITION . . . . . . . . . . . . . . l- 10

Pulse Position VERNIER . . . . . . . . . . ccw

g. Set Sampling Oscilloscope:

CHANNEL SELECTOR . . . . . . ..CHANNELA

VERTICAL SENSITIVITY

200 MV/CM

TRIGGER . . . . . . . . . . . : : : : ‘EXT NORMAL

TRIGGERSLOPE................... -

TIME SCALE

TIMESCALEMAGNI&Ek:::::.....

100 NSEC/CM

. x20

h. Set Attenuator to 30 db.

i. Obtain 10 cm of vertical signal as shown in

Figures 5-3 and 5-4.

j. Rise and fall time of positive pulse should be

less than 15 nsec (3 cm).

k. Rise and fall time of negative pulse should be

less than 13 nsec (2.6 cm).

m. Set:

PULSE AMPLITUDE . . . . . . . . . . 20 VOLTS

Amplitude VERNIER . * * * * * . * * . 20V output

Sampling Oscilloscope VERTICAL

SENSITIVITY . . . . . . . . . . . . . 200 MV/CM

n. Rise and fall time of both positive and negative

pulses should be less than 13 nsec.

p. Set:

PULSE AMPLITUDE . . . . . . . . . . 10 VOLTS

Amplitude VERNIER . . - * * * - a . . 1OV

OUtpUt

Sampling Oscilloscope VERTICAL

SENSITIVITY. . . . . . . . . . . . . . 100 MV/CM

02056-4

.05-l

Figure 5-3. Positive Pulse Risetime 1OV Amplitude

Figure 5-4.

Negative Pulse Risetime 1OVAmplitude

q. Rise and fall time of both positive and negative

pulses should be less than 13 nsec.

5-15. RATE AND WIDTH JITTER.

a. Connect PULSE OUTPUT of Model 214A to

Model 10204B 50-ohm Tee with BNC to type N cable.

b. Connect 50-ohm Tee to Sampling Oscilloscope

trigger INPUT using type N to BNC adapter.

c. Set Model 214A:

INT. REP. RATE.. . . . . . . . . . . . . . 100-IK

Rate VERNIER. . . . . . . . . . . . . . . . Midrange

PULSE AMPLITUDE . . , . . . . . . . . . 1 VOLT

Amplitude VERNIER . . . . . . . . . . . . . . . cw

PULSE OUTPUT . . . . . . . . . . . . . . ..a . . -

PULSE POSITION , . . . . . . . . , . . . . . . . ccw

Position VERNIER. . . . . . . . . . . . . . . . . ccw

PULSE WIDTH . . . . . . . . . . . . . . . . . .05-l

Width VERNIER. . . . . . . . . . . . . . . . . . . 10

5-5

Section V

Paragraphs 5-16 to 5-23

Model 214A

d. Set Sampling Oscilloscope:

TRIGGER SLOPE . . . . . . . . . . . . . . . . . . -

TIME SCALE . . . . . . . . . . . . .

TIME SCALE MAGNIFIER . . . . . . . . . . . X50

e. Looking at leading edge of second pulse, rate

jitter should be less than 10 nsec (1 cm).

f. Set Sampling Oscilloscope:

TIME SCALE . . . . . . . . . . . . 100 NSEC/CM

TIME SCALE MAGNIFIER. . . . , . . . . . . X100

g. Looking at trailing edge of pulse, width jitter

should be less than 1.5 nsec (1.5 cm).

5-16. OUTPUT PULSE TO TRIGGER OUTPUT

JITTER.

a. Connect Model 214A PULSE OUTPUT to Model

10204B 50-ohm tee with BNC to type N cable.

b. Connect Sampling probe to Tee.
c. Connect Model 214A TRIGGER OUTPUT to

Sampling Oscilloscope trigger INPUT.

d. Set Model 214A:

INT. REP. RATE. . . . . . . . . . . . . . . lOO-1K

Rate VERNIER. . . . . . . . . . . . . . . . fully ccw

PULSE WIDTH . . . . . . . . . . . . . . . . 5 &SEC

PULSE POSITION . . . . . . . . . . . . . . . .

Position VERNIER . . . . . . . . . . . . . . . . .

ADVANCE/DELAY/DOUBLE . . . . . . . DELAY

PULSE AMPLITUDE. . . . . . . . . . . . . 1 VOLT

Amplitude VERNIER . . . . . . . . . . . . . . .

TRIGGER OUTPUT . . . . . . . . . . . . . . . . . -

e. Set Sampling Oscilloscope:

TRIGGER SLOPE. . . . . . . . . . . . . . . . . . .

TIME SCALE . . . . . . . . . . . . . . . . 100 nsec

TIME SCALE MAGNIFIER. . . . . . . . . . . X100

f. Looking at leading edge of pulse, jitter shouldbe

less than 1.5 nsec (1.5 cm).

5-17. ADJUSTMENTS.

5-18. Paragraphs 5-22 through 5-27 give a complete

I.

adjustment procedure for the Model 214A. Since some
adjustments interact with others, follow the pro­cedures in the step sequence given. If difficulty is
encountered in making any adjustment, refer to Para­graph 5-28 for troubleshooting procedures.

5-19. EQUIPMENT REQUIRED. Test equipment re­commended for the adjustment procedure is listed in
Table 5-1, items 11 through 15. Similar instruments

having the listed characteristics may be substituted.

.5pSEC/CM

O-1

cw

10

5-20. LOCATION OF ADJUSTMENTS.
shows the location of all internal adjustments in the
Model 214A.

5-21. POWER SUPPLY ADJUSTMENTS.

5-22. Measure and adjust each supply with dc volt­meter in the order given in Table 5-2, using wire
colors to locate each voltage test point and reference
point. The -350 volt and -505 volt supplies are not
regulated and may vary as much as &100/o at normal
line voltage.

5-23. RATE MULTIVIBRATOR.

a. Set Model 214A controls as follows:

TRIGGER MODE . . . . . . . . . . . . . . . . . INT.

INT. REP. RATE . . . . . . . . . . . . . . . . 1-10

Rate VERNIER . . . . . . . . , . . . . . . midrange

ADVANCE/DELAY/DOUBLE

. . . . . . . . . . .

PULSE ADVANCE

PUL& ‘P’O’SITION . . . . . . . . . . . . . . . .

Position VERNIER. . . . . . . . . . . . . . . . . ccw

WIDTH.. . . . . . . . . . . . . . . . . . . . . 0.05-1

Width VERNIER. , . . . . . . . . . . . . . . . . . ccw

b. Set Oscilloscope and Plug-in controls as follows:

Channel Selector , . . . . . . . . . . . CHANNEL A

SENSITIVITY (VERNIER ,@ CALIBRATED)

. . . . . . . . . . . . . . . . . . . .

AC/DC Coupling . . . . . . . . . . . . . . . . . . AC

POLARITY . . . . . . . . . . . . . . . . . . . . . +UP

TRIGGER SLOPE. . . . . . . . . . . . . . . . . . . +

TRIGGER LEVEL . . . . . . . . . . . . . . . . . . +

TRIGGER SOURCE . . . . . . . . . . . . . . . INT.

SWEEP MODE. . . . . . . . . . . . . . . . PRESET

-

SWEEP TIME (VERNIER in CAL.)

HORz’Z%TAL’ D&LA; : : : : : : . . . . . . . X1

c. Attach oscilloscope probe to pin 1 of V102 (tube
side of R126, 860 0 ) of the Model 214A. The wave­form amplitude should be about 30 volts (3 cm). If
no waveform appears, turn symmetry adjustment
R133 fully ccw.

d. Set INT. REP. RATE VERNIER to obtain one

complete cycle in 10 cm on scope.

e. Adjust Symmetry Adj R133 to obtain a sym­metrical waveshape. Turn VERNIER to retain one
cycle in 10 cm while setting symmetry with R133.

f. Set Model 214A INT, REP. RATE to lOO-1K

and Rate VERNIER fully ccw.

g. Set scope SWEEP TIME to 2 nSEC/CM.

Figure 5-5

O-1

1 VOLT/CM

20 @EC/CM

Table 5-2. Power Supply Voltage Adjustments

SUPPlY

Voltage Wire Color

-150

+ 150 red

Voltage Test Point Reference Point Adjustment

Wire Color

vi0 blk (chassis) R26

blk (chassis) R13

-200 wht-yel-vio wht-blk-blu (Ov) R45

-350

-505 wht -blk-vio

wht -vio wht-blk-blu (Ov) None

wht-blk-blu (Ov)

None

I

5-6 02056-4

Model 214A

SCREEN

MAX DELAY

ADJ R250 ADJ ADJ

SHUNT

CURRENT OVERSHOOT

R363

c319

Section V

Paragraph 5 -24

BIAS CURRENT

ADJ R344

05-l

MIN DELAY

ADJ R260

.05-l

MAX DELAY

ADJ C229

MIN DELAY

ADJ R259

O-l

MAX DELAY

ADJ C205

O-l

MIN DELAY

ADJ R210

---- .__

MAX DELAY HIGH FREQ SYMMETRY

ADJ R20l ADJ RI35 ADJ RI33

Figure 5-5. Location of Adjustments

h. Connect scope probe to pin 8 of V103 (tube side VERNIER fully ccw.

of R144. 150 R ).

greater than 100 psec (5 cm).

i. Adjust Max Rep Rate Cl13 to set spacing be­tween pulses of about 11 psec (5.5 cm).
amplitude should be about 35 volts.

j. Set scope SWEEP TIME to 1 PSEC. CM. Rotate
Model 214A INT. REP. RATE VERNIER fully cw.

k. Adjust High Freq. Adj. R135 to obtain 11 periods/

10 cm on scope.

m. Repeat ative procedure starting with step f

Pulse

5-24. PULSE POSITION MULTIVIBRATOR.

a. Set Model 214A control as follows:

TRIGGER MODE . . . . . . . . . . . . . . . . . INT.

INT. REP. RATE.. . . . . . . . . . . . . . . . l-10

Rate VERNIER . . . . . . . . . . . . . . . midrange

PULSE POSITION . . . . . . . . . . . . . . lo-100

Position VERNIER. . . . . . . . . . . . . . fully cw

ADVANCE/DELAY/DOUBLE

to minimize interaction between Cl13 and R135.

TRIGGER &UT&T : : : : : . . . . . . . . . . . . +

n. To check above adjustment, set scope sweep
time to 2 jlSEC/CM, Model 214A INT. REP. RATE
to lo-100 and VERNIER fully cw. Pulse spacing
should be less than 10 jlsec (5 cm). Next set scope
sweep time to 20 pSEC/CM and Model 214A rate

02056-2

PULSE OUTPUT . . . . . . . . . . . . . . . . . . . +

PULSE WIDTH . . . . . . . . . , . . . . . . . . l-10

Width VERNIER
PULSE AMPLITUDE’ : : : : : : : : : : : : : : .

AMPLITUDE VERNIER . . . . . . . . . . . . . ccw

WIN DELAY

ADJ R.&‘_O_9

MAX REP

RATE Cl13

214A-A-13A

Pulse spacing should now be

PULSE ADVANCE

ccw

10

5-7

Section V

Paragraphs 5-25 to 5-26

Model 214A

b. Set Oscillocope and plug-in controls as follows:

Channel Selector . . . . . . . . . . . ALTERNATE

SENSITIVITY Channel A (VERNIER in

CALIBRATED). . . . . . . . . . . . 1 VOLT/CM

SENSITIVITY Channel B (VERNIER in

CALIBRATED). . . . . . . . . . . . 5 VOLTS/CM

AC/DC Coupling (Channels A & B) . . . . . . DC

POLARITY (Channels A & B) . . . . . . . . . +UP

TRIGGER SLOPE . . . . . . . . . . . . . . . . . . +

TRIGGER LEVEL . . . . . . . . . . . . . . . . . . +

TRIGGER SOURCE . . . . . , . . . . . . EXT. AC

SWEEP MODE . . . . . . . . . . . . . . . PRESET

SWEEP TIME (VERNIER in CAL.)

. . . . . . . . . . . . . . . . . . . .

20 @EC/CM

HORIZONTAL DISPLAY . . . . . . . . . . . . . Xl

c. Connect channel A scope probe to pin 3 of V205

(grn wire at end of R244, 15Oa).

d. Use BNC to BNC cable to connect Model 214A

TRIGGER OUTPUT to oscilloscope channel B INPUT.

e. Connect divider probe to pin 8 of VlO3 (tube

side of R144, 150 n ) and probe cable to scope TRIG

INPUT.

f. Check to see that when PULSE POSITION VER-

NIER is fully clockwise, arrow on knob points to

the black dot on the front panel. If not, loosen set
screws,

slip knob to proper position, and tighten

screws.

g. Set PULSE POSITION VERNIER to 10.

h. Adjust Max Delay Adj R201 to obtain 100 psec
(5 cm) spacing between the channel A and channel B
displayed pulses.

i. Set PULSE POSITION VERNIER to 1. Change

scope sweep time to 1 pSEC/CM.

j, Adjust Min Delay Adj R209 to obtain 10 psec

(10 cm) spacing between channel A and channel B

pulses.

k. Repeat above procedure starting with step g

to minimize interaction between R201 and R209.

q. Adjust O-l Max Delay Adj C205 to obtain 1 ysec

(5 cm) spacing between channel A and channel B

pulses.

r. Change scope sweep time to .l pSEC/CM;

Model 214A Position VERNIER to 1.

s. Adjust O-l Min Delay Adj R210 to obtain .l ~sec

(1 cm) spacing between channel A and channel B

pulses.

t. Repeat above procedure starting with step n

to minimize interaction between C205 and R210.

Note that with the semi-calibrated VERNIER, reset­ting to exactly 1 or 10 is difficult and this error may
seem like interaction between the two adjustments.

5-25. OUTPUT BIAS CURRENT.

a. Set Model 214A TRIGGER MODE switch to
EXT. (or set GATE INPUT to GATED position).
This is to ensure that no signal can trigger output
tubes V304 and V305 during this adjustment pro-

cedure.

CAUTION

If step a is not followed, damage to Model

214A circuit components may result.

b. Refer to Figure 5-6 and locate the wire loop
on the bottom side of the output circuit board, A301.
The current flowing in this loop is to be measured
and an adjustment made if necessary.

c. If using a @ Model 428B, clip the current probe

around the wire loop,

with arrow on the probe

pointing to the nearest side panel. If a conventional

milliammeter is used, the wire loop must be opened

and the milliammeter inserted in series.

To open

the loop, either unsolder one end of the wire from

the circuit board, or slide the insulation to one end
and clip the wire.

d, AdjustR344foranindicationof from49to45 ma.

Note

It may appear that interaction is occurring

because the VERNIER has not been reset
to the same point as before. Since VER­NIER is semi-calibrated by front panel

markings, consider errors in resetting to
“1” or

“10” for above adjustment check.

m. Set VERNIER to ccw extreme and pulse spacing
should be less than 5 psec; at cw extreme greater
than 110 psec.

n Make the following changes in settings of Model

2 14A:

INT. REP. RATE . . . . . . . . . . . . . . . lOO-1K

Rate VERNIER . . . . . . . . . . . . . . . midrange

PULSE POSITION . . . . . . . . . . . . . . . . . O-1

Position VERNIER . . . . . . . . . . . . . . . . . . 10

p. Change scope SWEEP TIME to .2 ySEC/CM.

Other scope settings remain

same

as for previous

steps.

5-8

e. If the wire loop has been opened, carefully

resolder wire to the circuit board or solder the

two ends of the wire together.

5-26. PULSE WIDTH AND AMPLITUDE.

Set Model 214A controls as follows:

a.

TRIGGER MODE
INT. REP. RATE
Rate VERNIER
NORM./GATED

PULSE POSITION

Position VERNIER.

.................

INT.

................. l-10

............... fully ccw

................

...............

NORM.

l-10

............ fully ccw

ADVANCE/DELAY/DOUBLE

...................

TRIGGER OUTPUT
PULSE WIDTH
Width VERNIER

..................

................ lo-100

............... fully cw

PULSE AMPLITUDE
Amplitude VERNIER

PULSE OUTPUT

................... +

................

...........

PULSE DELAY

midrange

02056-3

+

5

Model 214A

Section V

Paragraph 5-26

b. Set Oscilloscope and plug-in controls as follows:

Channel Selector
SENSITIVITY (VERNIER in CALIBRATED)

. . . . . . . . . . . . . . .

AC/DC Coupling * * . * * . * * * . . * . * DC

Polity . . . . . . . . . . . . . . . . +Up

1 -VOLT/CM

TRIGGER SLOPE . . . . . . . . . . . . . . . +

TRIGGERSOURCE~*~~~~~*~ EXT.AC
SWEEP MODE . . * * * . * * * * . PRESET
SWEEP TIME (VERNIER in CAL. )

. . . . . . . . . . . . . . .

20 @EC/CM

HORIZONTAL DISPLAY * * * . . * . * * * Xl

c. Attach a5Oohm coaxialcable to the Model 214A

PULSE OUTPUT. Connect the other end of the cable
to a BNC, T-connector at the scope channel A input.
Attach a 50 ohm termination (procedure assumes use
of a termination capable of dissipating at least l/2
watt) to the T-connector. Use a coaxial cable and con­nect the Model 214A TRIGGER OUTPUT to the scope
TRIG. INPUT.

d. Check to see that the arrow on the PULSE
WIDTH VERNIER points to the black dot on the front
panel when fully cw. If not, loosen set screws, slip
knob to proper position, and tighten screws.

e. Set PULSE WIDTH VERNIER to 10.

f. Adjust Max Delay Adj R250 to obtain a pulse

width of 1OOusec (5 cm) observed on the scope.

g. Change scope sweep time to 2 wSEC/CM. Set

214A PULSE WIDTH VERNIER to 1.

h. Adjust Min Delay Adj R259 to obtain a pulse

width of lOu.sec (5 cm) observed on the scope.

i. Repeat above procedure starting with step e
to minimize the interaction between R250 and R259.
In checking for interaction, consider the error in­volved in resetting to the same 1 or 10 VERNIER
position used before.

j. Set Model 214A PULSE WIDTH to 10, width
VERNIER to 9, PULSE AMPLITUDE to 10,amplitude
VERNIER to fully cw. Change scope SENSITIVITY
to 2 VOLTS/CM.

k. Adjust 1OV amplitude R355 to obtain a 11 V

(5.5 cm)pulse observed on the scope (be sure PULSE

AMPLITUDE VERNIER is fully cw).

m. Change Model 214A TRIGGER MODE to EXT.,

and PULSE AMPLITUDE to 50.

n. Connect a dc voltmeter across resistor R352;
negative lead at tube side of R352. 1200 ohms. aosi­tive lead clipped to the upright metal shield for-tubes

V304 and V305.

p. Set R353, 50 V Amplitude, to mid-position and
adjust Screen Shunt Current Adj R363 until voltmeter
indicates 12 volts.

Disconnect voltmeter.

q. Set Model 214A TRIGGER MODE to INT. and
PULSE AMPLITUDE to 20. Change scope SENSI ­TIVITY to 5 VOLTS/CM.

r. Adjust 20 V Amplitude R354 to obtain a 21 V

(4.2 cm)pulse observed on the scope.

With VERNIER

ccw pulse amplitude should decrease to about 10 V.

s.

Set Model 214A controls as follows:

PULSE OUTPUT . . . . . . . . . . . . . . . _

PULSE AMPLITUDE* * * * 20, VERNIER cw

t.

Set Oscilloscope controls as follows:

SENSITIVITY. . . . . . , . . . 5 VOLTS/CM

VERNIER. . . . . . . . . . . . . . . . . (-‘AL

U.

Adjust Model 214A PULSE AMPLITUDE VER-

NIER for 4 cm display (20 V). Observe overshoot

.~

at end of trailing edge of pulse.

v. Adjust C319 for 4-4.5 mm (4-4-1/2%)overshoot.

Note

C319 should not be adjusted for less than
40/o overshoot as over-compensation may

result in rise time deterioration.

w. Set Model 214A PULSE AMPLITUDE to 50 and
VERNIER fully cw. Change scope SENSITIVITY to
10 VOLTS/CM.

x. Adjust 50 V Amplitude R353 to obtain a 52 V
(5.2 cm)pulse observed on the scope.

Turning VER­NIER ccw should aecrease pulse amplitude to about
20 volts.

y, Set Model 214A PULSE WIDTH to .05-l, Width
VERNIER to 10, Rate VERNIER fully clockwise
and PULSE AMPLITUDE VERNIER for 50V amplitude.

Set scope sweep time to .21-~ SEC/CM.

z. Adjust .05-l Max Delay Adj C229 to obtain
width of 1 ysec (5 cm) observed on the scope.

aa. Set Model 214A PULSE WIDTH VERNIER to

1. Change scope SWEEP TIME to . 1 (rSEC/CM,
HORIZONTAL DISPLAY to X10, and adjust HORIZ­ONTAL POSITION to center trace.

bb. Adjust .05-l Min Delay Adj R260 to obtain a
pulse width of 1OOnsec (10 cm) observed on the scope.
Width of pulse is measured at half amplitude point.
Set scope HORIZONTAL DISPLAY back to Xl.

cc. Repeat above procedure starting with step y to
minimize interaction between C229 and R260.

In
checking for interaction consider the error involved
in resetting VERNIER to same 10 position.

dd. Set the ADVANCE/DELAY /DOUBLE switch to

PULSE DELAY.

ee. Set the oscilloscope SWEEP TIME for 10

nsec/cm.

ff. Set the PULSE WIDTH VERNIERfor a 50 nsec

pulse width.

gg. Set the ADVANCE/DELAY/DOUBLE switch to

PULSE ADVANCE.

hh. The width of the displayed pulse is 50*5 nsec

at the 50% amplitude point.

ii. If necessary, select a new value for resistor
R143 so that the pulse advance mode meets specifica­tion. The selection of R143 should be between 200
and 430 ohms.

02056-4

5-9

Section V
Paragraphs 5-27 to 5-32

Model 214A

5-27. OVERLOAD RELAY ADJUST.

a. Set Model 214A controls as follows:

TRIGGERMODE............. INT.

INT. REP. RATE * . . * . * . . * - * * l-10

Rate VERNIER. . . * . . . - . . . . midrange

NORM./GATED . * . * * * . . * * * . NORM.

PULSE POSITION . . * . + * * * . * . . l-10

Position VERNIER. * . . . . . . * . midrange

ADVANCE/DELAY/DOUBLE

. . . . . . . . . . . . . .

. PULSE DELAY
TRIGGEROUTPUT **********.*. +
PULSE AMPLITUDE * . . . * * * * * . * * 10

Amplitude VERNIER. f . * . * * * 1OV output

PULSE WIDTH. . . . . . . . . . . . . lo-100

Width VERNIER * * * * * * - * * * - iUlb

CC%’

PULSE OUTPUT. . . . . . . . . . . . . . . +

Set oscilloscope and plug-in controls as follows:

b.

Channel Selector * * . . . . . . . CHANNEL A

SENSITIVITY (VERNIER

. . . . . . . . . . . . . . . .

AC/DC Coupling . * . * * . * * * * * * . * DC

Polity. . . . . . . . . . . . . . . . .+Up

t0

CALIBRATED)

1 VOLT/CM

TRIGGER SLOPE . . * . * * * . * * * . * . +
TRIGGER LEVEL * * . * . . * * * . * . * . +

TRIGGER SOURCE * * * * * . * . . . EXT. AC

SWEEP MODE * * * * * . . * . . * * PRESET

SWEEP TIME (VERNIER in CAL. )

. . . . . . . . . . . . . . .

* 10 ySEC/CM

HORIZONTAL DISPLAY . * . * * . * . * * Xl

c. Attach a 50-ohm coaxial cable to the Model 214A
PULSE OUTPUT. Connect the other end of the cable
directly to the scope channel A input through a 50-ohm
load. Connect a coaxial cable between the Model 214A

TRIGGER OUTPUT and the scope TRIG. INPUT,

d. Adjust Model 214A PULSE POSITION VERNIER
and scope HORIZONTAL POSITION control until the
leading edge of the pulse is at the left edge of the

scope graticule.

e. Adjust Model 214A INT. REP. RATE VERNIER

until the leading edge of the second pulse is at the

right edge of the scope graticule.

f. Adjust Model 214A PULSE WIDTH VERNIER to
obtain a pulse 55 ;Isec (5.5 cm) wide observed on the
scope.

This corresponds to a duty cycle of about 55%.

g. If overload relay Kl is clicking (front panel

OVERLOAD light should also operate), rotate Over-

load Adj R30 clockwise until it stops.

Then rotate R30

counterclockwise until relay Kl just begins operation.

h. Rotate PULSE WIDTH VERNIER ccw to stop
overload relay operation.

Relay should operate again

as pulse width reaches about 55tisec (5. 5 cm).
5-28. TROUBLESHOOTING.

5-29. The information suggested in Paragraphs 5-30
through 5-34 is provided as a front panelcheck toaid
in locating-possible faulty components in the shortest

possible time.

In each solution it is assumed that
active components such as tubes, transistors and
diodes are defective, which may not be true in every
case. Waveforms, dc voltages and ohmmeter checks
in that order can be used to locate faulty passive com-

ponents such as resistors and capacitors. 111 locating

any problemin the Model 214A, check power supply
voltages first since they affect several circuits.

5-30. TRIGGER MODE CHECKS.

a. If the Model 214Acan be triggeredwith TRIGGER

MODE set to INT. but not in EXT. or MANUAL posi-

tions, replace DSlOl.

b. If the Model 214A can be triggered with TRIGGER

MODE setto INT. or MANUAL but not in EXT. posi-

tions, replace V101.

c. If the Model 214Acan be triggered with TRIGGER

MODE set to EXT. or MANUAL but not in INT. posi-

tions, replace CRlOl.

d. If the Model 214A can not be triggered in any of

the TRIGGER MODE positions, check waveforms 1

through 4 in that order to locate faulty component.

e. If the Model 214A will not gate on a minimum of

8 volts, check V103.

f. If V103, pin 8, has no output,check the -7.8 v
bias on V103 pins 2 and 7, and check the cathode po­tential on CR103 (should

be

positive).

5-31. PULSE CONTROL CHECKS.

a. If a trigger can be obtained at the TRIGGER OUT­PUT when PUIS E ADVANCE/PULSE DELAY/DOUBLE
PULSE control is set to PULSE ADVANCE or DOUBLE
PULSE, but not when set to PULSE DELAY, replace

v202.

b. If a trigger can not be obtained with PULSE,
ADVANCE/PULSE DELAY/DOUBLE PULSE control
in any position, replace V203 or check waveforms 10
through 12.

c. If PULSE POSITION control does not reposition

pulse, check waveforms 4 through 8 to locate faulty

component.

d. If PULSE WIDTH control does not vary pulse
width, check waveforms 17 through 22 to locate faulty
component.

e. If pulse width or pulse position suddenly changes

greatly when the VERNIERS are varied, replace diodes

CR202/203 or CR212/213, depending on which circuit

is faulty.

f. If there are no start or stop spikes (plates of
V301 and V302) check diodes in grid circuits (CR301,

302, 303, and CR306, 307, 308 and 309).

5-32. OUTPUT CIRCUIT CHECKS.

a. If a pulse is present at TRIGGER OUTPUT but
not at PULSE OUTPUT, check waveforms 13 through

16 and 23 through 26 in the Start-Stop Pulse circuits,
and dc voltages in the output circuit to locate faulty
components.

b. If output pulse amplitude will increase but does

not decrease, replace V308.

c. If output pulse will not hold its amplitude (sags),

check for blown fuse F2, or C325 for leakage.

d. If the output pulse appears as two spikes (start
and stop spikes), check Q301, CR326, CR327, and
CR328.

5-10

02506-4

Model 214A

Paragraph 5-33 to 5-44

Section V

e. Poor rise time is usually caused by weak V301

or faulty diodes CR324 and CR325.

f. If Amplitudepots, R353, R354, or R355 willnot
adjust the 10 v, 20 v, or 50 v ranges, respectively, to
the required amplitude, first check diodes CR320 thru
CR322. Thencheckbias adjustments R344 (par. 5-25)
and R363 (par. 5-26, steps m through p) for proper
bias on output tubes, V304 and V305.

g. If excessive overshoot exists on high amplitude

ranges, replace CR324 or CR325.
5-33. POWER SUPPLY CHECKS.

5-34. The power supplies can be checked for malfunc-

tions by making dc voltage measurements. If front
panel control settings are made, as indicated in

Schematic Notes, before measurements are made,
f’O” reference and chassis ground will be the same.

5-35. REPAIR AND REPLACEMENT.
S-36. GENERAL.

5-37. Refer to Figures 5-6 through 5-11 for locations
and identification of components on etched circuit
boards in the Model 214A.

For components not identi­fied in these figures, determine the circuit location
intheinstrument and refer to the schematic diagrams
for reference designator.

Section VI contains a com-

plete list of reference designators for electrical com-

ponents and the Hewlett-Packard Company stock

number for the item.
5-38. SERVICING ETCHED CIRCUIT BOARDS.

5-39. Etched circuit boards used in the Model 214A

have components onone side of the board with aplated

conductive layer of metal through component holes.
@ Service Note M-20D also contains useful information
on etched circuit repair.

The important steps and

considerations are:

a. Usea lowheat (30 to47.5 watts, less than800”F
idling temperature), slightly bent chisel tip (l/16 to
l/8 inch diameter) soldering iron, and a small diam­eter, high tin content solder.

If a rosin solder is used,

clean the area thoroughly after soldering.

b. Components may be removed by placing the
soldering ironon the component lead on either side of
the board andpullingup onthe !ead. If heat is applied
to the component side of the board, greater care is
required to avoid damage to the component (especially
true for diodes).

If heat damage may occur, grip the
lead with a pair of pliers toprovide a heat sink between
the soldering iron and component.

c. If a component is obviously damaged or faulty,

clip the leads close to the component and then unsolder

Ihe leads from the board.

d. Large components such as potentiometers and

tube sockets may be removed by rotating the soldering

iron from lead to leadand applying steady pressure to

lift the part free (the alternative is to clip the leads of

a damaged part).

e. Since the conductor part of the etched circuit
boards is a metal plated surface, covered with solder,
use care lo avoid overheating and lifting the conductor
from the board. A conductor may be cemented back
in place with a quick-drying acetate base cement (use
sparingly) having good insulating properties. Another
method for repair is to solder a section of good con­ducting wire along the damaged area.

f. Clear the solder from the circuit board hole
before inserting a new component lead. Heat the
solder in the hole, remove the iron, and quickly insert
a pointed non-metallic object, such as a toothpick.

g. Shape the new component leads and clip to

proper length. Insert the leads in the holes andapply
heat and solder, preferably on the conductor side.

S-40. PERIODIC MAINTENANCE.

5-41. GENERAL.
5-42. The air intake fan motor needs little lubrication

or preventive maintenance.

About once a year, place

one or two drops of light oil on the shaft at the front

and rear bearing supports.

It is also recommended
as preventive maintenance that the interior of the in­strument be cleared of any accumulated dust when

necessary.

y -\

/

iV306’

/

‘\./’

A301
OUTPUT ASSY
CIRCUIT SIDE
STOCK NO. 00214 -66503

Figure 5-6. Assembly A301 Circuit Side

02506-4

2141-b.-!

5-43. CLEANING AIR FILTER.

5-44. Inspect the air filter (rear of instrument) regu-

larly and clean it before dust can restrict air flow.
Air flows from outside the instrument in through the
filter.

a. Remove the filter and wash it inwarm water and

detergent.

b. Dry the filter thoroughly and coat with filter
adhesive preparation recommended in Paragraph
2-10.

5-11

Section V

Figure 5-7

Model 214A

5-12

i?

-- OCD

Ok-- I

Figure 5-7. Assembly Al01 Component Location

Rl59 -.-..

-,., - -_

--

I

-R2l!j -m +R265 a­..-.- ----

--.

02056-3

_.._ _ _.-- ..---_. --

Model 214A

Section V

Figure 5-8

02056-l

,

II

Cl04

RI26

LlOl

Cl10 Cl10

RI32 RI32

LlO2 LlO2

RI33 I RI33

RI35

Cl08

RI28

2

d

CIC

I

R 127

Figure 5-8. Assembly Al02 Component Location

I

II

5-13

Section V

Figure 9

Model 214A

5-14

-

I

B

R210 R209

-.

-Ii LR260 R25g

Figure 5-9. Assemblies A202 and A204 Component Location

214A-A-7

?-

02056-l

Model 214A

Section V

Figure 5-10

02056-3

2 I4A-A-106

ON OTHER
SIDE

Figure 5-10. Assembly A301 Component Location

5-15

Section V

Figure 5-11

Model

214A

rm
I

Kl

i

a

R6

I

32

\

,

RI3

Cl0

\

I

RI4

:

V6 a

CR6

- CR5-

0

20

RII

I
I

i

. .

I

I I

cu
lo
a

CII

CR7

c9

R31

214A-A-6A 1

5-16

Figure 5-11. Assembly Al Component Location

02056- 2

Model 214A

+150v

--

v

v

v

v

i-J

i

J-II!

.I MSECKM

.I USEWCM

r-

-l

V

.IUSEC/CM

I-

.I USEWCM

- +15ov

- +125V

- +Iv

- -7.av

- +1e5v

- +15ov

- +9ov

- +3ov

- ov

v J(

.I USECICM

yy f-- - +150v

v

.I USEC/CM

.I USEWCM

I.+-

.I USEC/CM

1 I:‘,,

- +75v

- +lBv

- ov

- +12v

- -7.6V

v fuL -

.I MSECKM

- +66v

v

- +1oov

- +45v

- -7.8V

- -50v

+35v

v

77

.I USECKM

.I USEC/CM

n -

JL-0,

.I USEC/CM

Section V

Figure 5-12

v ~-/J--l/- - +150v

.I MSECKM

v HH.h - +Iav

.I MSEC/CM

v Au - +150v

.I MSECKM

II

v J/- -

.I USECKM

J --ov

.IUSEC/CM

Figure 5-12. Typical Waveforms (see Schematic and Schematic Notes)

- +57v

- +3v

- +5ov

- +42V

-7.ev

- -45v

1 fzn_ - +15ov

.I USECKM

L

.I USEC/CM

L

.I USEC/CM

.I MSECKM

- +1oov

- +45v

- -7.6V

- +35v

- ov

v

w

v

v

- +5v

A-

.I USECKM

- -25V

7-y::

.I USECKM.

- ov

.5 USEWCM

lJ--

.I USECKM

50 USECICM

- -25V

- +15ov

- +105v

02056-I

5-17

Section V

SCHEMATIC DIAGRAM NOTES

1. Except as indicated: capacitance in microfarads; inductance in microhenries; resistance
in ohms.

Touching test probe at this point causes transient pulse and OVERLOAD indication. To

2.

avoid: turn power off, attach test probe, turn power on, and take measurement.
DC Voltage Measurement Conditions:

3.

a.

Set SLOPE, TRIGGER OUTPUT, and PULSE OUTPUT to -.
b. Set GATE INPUT switch to NORM.
c. Set PULSE ADVANCE/PULSE DELAY/DOUBLE PULSE to PULSE ADVANCE.
d. Set TRIGGER MODE to EXT.
e. Set all remaining switches, controls, and VERNIERS to 12 o’clock position (i. e. indi-

cator on knob points toward top of front panel).

f. Voltages shown are typical values, may vary f 10% from that shown. Voltages should

be measured with a high impedance dc voltmeter.

Model 214A

4. Waveform Measurement Conditions:
a. Set SLOPE, TRIGGER OUTPUT, and PULSE OUTPUT to -.

Set GATE INPUT switch to NORM.

b.

c. Set PULSE ADVANCE/PULSE DELAY/DOUBLE PULSE to PULSE ADVANCE.
d. Set TRIGGER MODE to INT.
e. Set all remaining switches, controls, and VERNIERS to 12 o’clock positions (i.e. indi-

cator on knob points toward top of front panel).

Waveforms shown are typical and were measured using a 1O:l divider probe and the

f.

oscilloscope with plug-in units indicated in Table 5-2.

Test points are indicated by

number in triangle and keyed to Figure 5-12.

Schematics are drawn showing switches in following positions:

5.

TRIGGERMODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

INT.

lNT. REP. RATE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . lOO-1K

ADVANCE,DELAY, DOUBLE.,................ PULSE ADVANCE

PULSE POSITION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O-1

PULSE WIDTH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0.05-l

PULSE AMPLITUDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

P/O = Part of

6.
= Isolated Voltage Supply

vI

7. Switch sections are identified by letters following the schematic designator (e.g. S4OlC).

Letters refer to a specific switch wafer, where A = front side of wafer nearest front panel,
B = rear side of wafer nearest panel, C = front side of second wafer, etc.

5-18

_.._--

02056-l

“-^ ._ .-._ -.--.----

Model 214A

COPYRIGHT ,963 BY HEWLETT- PACKARD CO

>,a, PYR SUP -812

FLI

LINE

FILTER

PI r---

WHT-

L--l

REFERENCE DESIGNATORS

Al Al
El El

Cl-4.6-11

Cl-4.6-11
CRI-7 CRI-7

DSI. 2

DSI. 2
FI

FI

FLI

FLI

JI

JI

KI

KI

PI.2

PI.2
RI -6.6. IO-

RI -6.6. IO- 14. 16-16.

SIA,B.Z

SIA,B.Z
TI

TI
VI-6

VI-6

WI

WI

14. 16-16.

20-23. 25-27.

20-23. 25-27.

30-34. 36-39.

30-34, 36-39,
41,42,44-46.46

41,42;44-46.46

1 7

RED(b

I

L----------------.

ELK E

I RED ‘2

GRN 5

ELK

YEL 1

TI

I
I
I

I

WHT-RED-GY -“’

ELK

I
I

I
I

I
I

I

-4c---+

I

:

I
I

I
I

I
I

6.5V@ 7.2A

$0 )

I \

6.3V@ 4.5A

:

r2

I
I

!j WHT-VIO-GY I‘)? c

I

F”

I
I

I
I
I

I

I
I
I
I
I
I
I

I

I
I
I

I
I

I

I

WHT-BRN-RED

TO Al a A301

HEATERS AT

-23.7,yJDC

TO Al 8 A301

HEATERS AT

;

TO Al01

1)

/go ?

WHT

-200VDC

-!q ; -

BRN

‘,

Y

DELETED:

02056-4

BRN. -v

RED

TO Tl TO TI

PINS I78 IE PINS I9 a20

Section V

Figure 5- 14

Model 214A

Figure 5- 14. Trigger Input Circuit
5-20

.

02056-4

Section V

Figure 5-13

; c;B” \\

40 ,/

. ..-J

ILK

I

/
I

WHT-ELK-VI0

G o-7

.-505v

Figure 5- 13. Power Supply

5- 19

JIOI

I

1

REFERENCE DESIGNATORS

I

AIOI, I02
cIoI-llo,ll3-ll7.

120 -123.125-127

CRIOI -105

I

DSIOI
LIOI-IO5

I

JlOl.102

I %l-1O5.106-113,115-11*.

120-122. 125-130.
132-136. 141-144,

I

146-152.155-159.

247,240

SIOI- 105

I

TIOI

VIOI- 104A

I

L

DELETED:

I

I
I

TO-T1
PIN I

-

Model 214A

REFERENCE DESIGNATIONS

I

AIOI. 202. 204
C201 -210 , 213 -216, 218, 220-223,

225-229. 231-235
CR201 -204,206-210.212-214
OL201,202
J2Ol
A201 -205. 207-211, 215-219. 221-223.

225. 227, 220,230 -235,237-239,
241-244, 250-255,257-261,
265-269. 271-273

S2Ol- 204
T20l-204
VlO4B. 201-206

I

DELETED:

I

I

“rezi?

%G+-

9lPF

.Ol

IOOOPF

02056-3

Section V

Figure 5-16

BISTABLE MULTI VI BRATOR

Bi POWER AMPLIFIER

0301.v304 8 v305

Model 214A

WHT-RED-EL1

----

Figure 5- 16. Start-Stop Pulse Circuit
5- 22

-Iv

WHT-ELK-VI0

PINS PINS PINS

17819 19820 21822

--..(,

02056-3

Section V

Figure 5- 15

YEL-VI0

IELK

I --------l

QV

--W

T

I

GRN

-

~

STAR.1

PULSE

TO L301

V

1269

.-

0235

Figure 5- 15.

V2068

112 6DJ8

Pulse Control Circuit

I

%P+

I

PULSE
TO L303

ELK
Z-iLJs

5-21

REFERENCE

A301

C301-304,306,307. 309-311.

315,317,316,320-325,326

CRJOI-304 306-310 313-315,

317,316,3kO-322,324-326

DS301-303
~301. 303,305,306

0301’
R~OI-303.307-3ll.313-315.317-323

325-331.333-336,340,341,343-35(

5401

T30 I, 302

DESIGNATIONS

V3Ol-306

DELETED:

COPYR,GHT ,963 BY HEWLETT-PACKARD CO.
Z,4&-o”TP”T LYP.B M” -704

c3oe
c30;
R304

R324
R339

Model 214A

-01

1 \
Y

25n

1

r---------------------------

\

\

\

\

T-----------

50n ,

ON TWC

/

L401

2.5MH

\

\

\

\

\

\

\

\

\

02056-2

Section V

Figure 5- 17

ZOAXIAL
) TOROIDS

A

\

\

-----------1

---7---------r---~---

\

\

\

\

\

\

\

\

\

\

\

-T-----T---

_1( “+ - - + 2,: - - - -2

0 0
0 0
* 0

9%

p;10’ ’

R413
150

_I

WHT-BLK-RED

a353
250K

REFERENCE DESIGNATORS

rTi$z-j

L308,401.402

R35l-355,357,358.360-

364.366-369.401.402.
404-408,41 I-419

5401,402

V307,308

DELETED:

COPYRIGHT 1963 BY HEWLETT-PACKARD CO.
2141-OUTPUT- 550

Figure 5- 17. Output Circuit

5- 23/5- 24

Model 214A

Paragraphs 6-1 to 6-6

Section VI

SECTION VI

REPLACEABLE PARTS

6-1. INTRODUCTION.

6-2. This section contains information for ordering
replacement parts.

Table 6-1 lists parts in alpha­numerical order of their reference designations and
indicates the description and s@$ stock number of each
part, together with any applicable notes. Table 6-2
lists parts in alpha-numerical order of their @ stock
number and provides the following information on

each part:

a. Description of the part (see list of abbreviations

below),

b. Typical manufacturer of the part in a five-digit

code; see list of manufacturers in Table 6-3.

c. Manufacturer’s part number.
d. Total quantity used in the instrument (TQ column),

REFERENCE DESIGNATORS

A = assembly
B = motor

= capacitor

C

CP = couoli”E

CR

= diode _

DL

= delay line

DS

= device signaling (lamp)

A = amperes

= automatic frequency control

A.F.C
AMPL = amplifier

B. F. 0. = beat frequency oscillator
BE CU = bervllium couoer
BH = binier head ..
BP = bandpass

BRS = brass

= backward wave oscillator

BWO

CCW = counter-clockwise

CER = ceramic

= cabinet mount only

CM0
COEF = coefficient
COM = cO”imOn
COMP

= composition
= co”“ector

CON??

= cadmium plate

CP
CRT = cathode-ray tube
cw = clockwse

DEPC

= deposited carbon

DR

= drive

ELECT = electrolytic
ENCAP = encapsulated
EXT = external

F = farads

FH = flat head

FIL H = fillister head

FXD = fixed

01194.9

E

= mix electronic part Ml? = mechanical part
= fuse P = plug

F
FL

= filter

J

= jack R = resistor

K

= relay RT = thermistor
= inductor S

L
M

= meter T

ABBREVIATIONS

GE

= germanium

GL

= glass

GRD

= ground(ed)

H

= henries

HEX

= hexagonal
= mercury

HG
HR

= hour(s)

IF

= intermediate freq

IMPG

= impregnated

INCD

= incandescent
= include(s)

EiCL
INS

= insulation(ed)

INT

= internal

K

= kilo = 1000

LIN = linear taper
LK WASH = lock washer
LOG = logarithmic taper

= low pass filter

LPF
M = milli = 10s3

MEG = “leg = IO-6
METFLM = metal film
MFR = manufacturer
MINAT = miniature
MOM = momentary
MTG = mounting
MY = “mylar‘

N = “ano (10-9)

6-3. Miscellaneous parts are listed at the end of
Table 6-1.

6-4. ORDERING INFORMATION.

6-5. To obtain replacement parts, address order or

inquiry to your local Hewlett-Packard Field Office

(see maps at rear of this manual for addresses).

Identify parts by their Hewlett- Packard stock numbers.

6-6. To obtain a part that is not listed, include:

a. Instrument model number.
b. Instrument serial number.
c. Description of the part.
d. Function and location of the part.

= terminal board

TB

Q

N/C =
NE =
NI PL =

N/O =

NPO =

NRFR =

NSR =

OBD =
OH =
ox =

P =
PC =
PF =

PH BRZ =
PHL =
PIV =
P/O =
POLY =

PORC =

POS =
POT =
PP =
PT =
RECT =
RF =
RH =

= transistor

= switch
= transformer

normally closed
neon
nickel plate
normally open
negative positive zero
(zero temperature
coefficient)
not recommended for
field replacement
not separately
replaceable

order by description
oval head
oxide

peak
printed circuit
picafarads =
lo-l2 farads
phosphor bronze
Phillips
peak inverse voltage
part of
polystyrene
porcelain
position(s)
potentiometer
peak-to-peak
point
rectifier
radio frequency
round head

TP = test point
V = vacuum tube, neon

W = cable
X

Y

RMO = rack mount only
RMS = root-mean-square

S-B = slow -blow
SCR = screw
SE
SECT = section(s)
SEMICON = semiconductor
SI = silicon
SIL = silver
SL = slide
SPL = special
SST = stainless steel
SR = split ring
STL = stec1

TA = tantalum

TD = time delay

TGL = toggle

TI = titanium

TOL = tolerance
TRIM = trimmer

TWT = traveling wave tube
u = micro= 10F6
VAR

VDCW = dc working volts

w/

W = watts
WW = wirewound

w/o

bulb, photocell, etc.

= socket

= crystal

= selenium

= variable

= with

= without

02056-l

6-l

Section VI

Table 6-l

Reference

Designation

Al

A2
I
A3

@ Stock No.

F

00214-66501
00214-61902

00214-61903

Table 6-1. Reference Designation Index

Description #

f

ETCHED CIRCUIT ASSEMBLY (POktR SUPPLY)

TRIGGER MOCt SlllITCti ASSEhBLY

INCLUDES A102 AhD S103

SWITCH ASSEMeLY

INT. REP. RATE INCLUDES A7

--_

Model 214A

Note

A4
A5
A6
A?
A8
A9

Al00
Al01

Al02

A103

A201
A202

A203
A204

A205
A300

A301
81
Cl

c2
c3
c4
c5

THRU

TIIRU

THRU

00214-61904
00214-69503
OOZtY-66001
3100-0414
00214-61904

00214-66502
00214-66504

00214-66506 ETCHED C

00214-66506

00214-66503 ETCHED CIRCUIT AbSEMBLY (OUTPUT)

3140-0052
0180-0030

Ol70-0055
0180-0030
0170-0055

SWITCH

INCLUDES ~202 S201 AND MOUNT~~D COHP

ATTENUATOR ASSEhtiLY

INCLUDEb CABLEStCONNECTORS~S401

COAXIAL COIL ASSEMt3LY

INCLUOES LLCOl,L402,R4Ol,R402.

SWITCH:ROTARY

INCLUDES R137 PAHT OF A3
SW ITCH ASSEMBLY

PULSE WlDTh INCLbDES A204tS204

NOT ASSAGNLD

ETCHED CIRCUIT ASSEMBLY TRIGGERCIRCUIT
ETCHED

TRIGGER MOOEtPART OF A2

NOT ASSlGNED

PULSE POSITION tPAR1 OF A4
NOT ASSIGNED
ETCHED CIRCUIT ASSEMBLY
PULSE WIDTHvPART OF A8

NOT ASSIGNED

MOTOR :
C: FXD ELEC'I 120 X40 UF 450VDC‘;.

CtFXD MY OmlUF 20% ZOOVDCW
CtFXD ELECT 120 X40 UF 45OLDCW

C

tFXU MY

NOT ASS1 GNED

AssEt+%Y:PuLsE

LIRCUIT

IHCU

ASSEMBLY

T ASSEMBLY

POSITION

l/175 HP,. 3470 RPM

O.lUF 20%

ZOOVDCW

Cb
c7
C0

c9, ClO,Cll

Cl2 - Cl00

Cl01

c 102
c 103

Cl04
c 105

Cl06
Cl07

Cl08
Cl09

6-2

0180-0030
0100-0024
0160-0043
0150-0012

0140-0152
0150-0012

0140-0199
0150-0052
0150-0012

0160-2128

0140-0152
0170-0055
0150-0012

CtFXD ELECT 120 X40 UF 45OVbCY
CtFXD ELECT 40UF 45OVDCW
“c;‘F”x”D Fi\E” OeOSlUF, 10% 40c1VOCw

NOT ASSIGNED
CtFXO MICA

C tFX0 CER 0.01UF 20% 1OOOVDCk
CtFXD MICA 240PF 5% 300VfCYI

C tFxD CER 0905 UF 20% YOOVDCk
CtFXO CER CI.OlUF
CtFXD MYLAR Os33UF 20X 2OOVDCW

CtFxU MICA AOUO PF 5% 300 bQCW
C tFXU MY OqlUF 20% ZOOVDCW
CtFXD CER

.OlUF 20% 1OOOVDCW

1000

PF 5% 300 VDCW

20% 1OOOVCKW

O.OlLF 20% 1OOOWCw

# See list of abbreviations in introduction to this section

02056-5

_-_... ,.. . ..--.-

Model 214A

Reference

J3e signation

Section VI

Table 6-l

Table 6-1. Reference Designation Index (Cont’d)

@ Stock No. Description # Note

Cl10

Cl11

Cl12 NOT ASSIGNED

THRU

0140-0116

CllY 0130-0001
Cl14 0160-0208
Cl15

Cl16

0140-0152
0160-0207 CIFXD MYLAR OaOlUF 5a 200VDCW

Cl17 0170-0019
Cl18

Cl19 NOT ASSAGNUED
Cl20 0140-0204 ClFXD 47PF 5% hP0 5Oi, VDcW

Cl21

c 122
Cl23

THRU

0 150-0052 CIFXO CER C;t05 UF 20% 400VK~
0140-0215 C:FXD

0 150-0052 CIFXO CER Ot05 UF 20% 4OOVuCr

Cl24

C 125 0140-0152
Cl26 0140-0176

C 127 0140-0196

c12a THRU
c200 NOT ASSIGNED
c201 0170-0019 CIFXD MY
c202 0160-0207 CaFXD MYLAR OaOluF Sk 200V~Cr
c203 0140-0152

C204
C205 0130-0014 ClVAR
C206
C207 0 150-0052
C208 O 150-0052 ClFXO CtR Ot05 UF 20% 4OOVGCW

C209 0140-0176 CtFXD
c210 0150-0052 CIFXO CEH 0~05 UF 20% 4OOVDCw
c211
c212 NOT ASSIGNED
c213 0 150-0052 ClFXD CtR Ot05 UF 20% 400vDCw
C214 0 150-005~ C:FXO CrR OeO5 UF 20% 4OOVOCu

THRU

0160-0208

0140-0194

ClFkO MICA 39 PF 21b 500 vLxn

C IVAR
ClFXO MICA 91PF 2% 300WVGC
CCFXD HXCA 1000 PF 5% 300 vGCW

CIFXO H’I

NOT ASSAGNED
C:FXO MlCA
CIFXO MlCA 100 VLjCw

CIFXO MiCA

ClFXD MLCA 1000 PF 5% 3O(i VbCW
CtFXO MICA YlPF 2% 3OOWVDC

7-45 5OuvDCw FF

0.1

UF 5% 2OOVDcw

HiCA

8OPF 2% >OOVDCW

1000

PF 5% 300 VGCW

PF 2% 300

150 PF 5% 300 VDCn

0.1 UF 5%

CER PF 5-25 NPO

2OOVDCC

C:FXD MICA 110 PF 5%

ClFXD CLR bF 0905 20% 400v~&e

MICA

100 Pf 300 r%

VDCn

C215 0 150-0052
C2i6 0 140-0176 ClFXO
C217
C218

OlSO-0012

C219

c220 0140-0176 C:FXD MICA
c221 0150-0052 CtFXD CfR 0905 UF 20% YOOVUCL
c222 0 150-0052 CIFXO CER Ot05 UF LO& 4OoVDCW
c223
C224 NOT ASSIGNED

C225 0170-0019 CSFXD MY 0.1 UF 5% ZOOVDCW
C226

C227 0140-0152
C228 0 160-0208 CIFXD MICA 91PF 2% 300YVDC
C229 0130-0014
c230 NOT ASSLGNEO

c231 0 150-0052 C lFXD

0140-0194 C:FXD

0160-0207 ClFXCl MYLAR

CIFXO CtR 0905

MICA PF

NOT ASSlGNkb
CtFXD CER O.OlLiF
NOT ASSAGNLC

MICA 110 PF 5%

ClFxO MICA 1000 5% 300 vOCw PF
C~VAR CER 5-25 PF NPO

CLR 0905 UF 20% 4OWDCw

bF 20% 4OUVDCrr

100

2% 300 VOCw

20% 1OOOVDCl

100

PF 2% 300 VGCw

OeOlUF 5% 200vDCw

jr See list of abbreviations in introduction to this section

02056-2 6-3

Section VI

Table 6-l

Model 214A

Table 6-l. Reference Designation Index (Cont’d)

Reference

Designation

c232

c233 OLUO-0176

C234
c235

C236

THRU

~$3 Stock No.

0150-0052
0150-0052

0140-0194

c300
C301 0140-0200

c302

0140-0175
C303 0150-0052
c304 0150-0052
c305

c306
c307

0 140-0200
0 150-0052

C308
c309 0140-0193
c310 0150-0052

c311
C312

c314

c315

THRU

0 150-0052

0150-0121

C316

c317 0160-0127

C318 0180-0049

c319

c320 0150-0050

0130-0017

c321 0150-0050
c322
C323

0140-0176
0150-0052

C324 0150-0052
C325 0180-0046
C326

THRU

C327
C328 0150-0052

C329 0150-0052

Description #

CIFXO CcR O.OSUF 20% YOOVDCk
ClFXD MACA 100 PF 2% 300 VDCti
C ,FXD CtR 0905 UF 20% 4OGVUCL

C:FXD MICA 110 PF 5%
NOT ASSIGNED

C:FXD MICA 390 PF 5% 3OOVDCW

ClFXD MACA 39 PF 210 300 VDCb

C ZFXO CER Ot05 ~JF 20% 40CVDCh
CIFXO CER Ot05 bF 20% 4OOVDCw
NOT ASSIGNED

ClFXD MICA 39OPF 5% 3OOVLCb+
C:FXO CER 0*05 UF 20% 4OcIVL)Cw

NOT ASSiGNED

C:FXD MICA 82 FF 5% 300 VDCW

ClFXO CER Ot05 bF 20% 4OOV(rC*

ClFXO CER 0~05 t,F 2OW 40OVUCd

NOT ASSIIGNCD
CIFXD CER
NOT ASSiGNEL

c IFXD CER 1.0 UF 2m 25VDcW
CIFXO ELECT 2OUF SOVDCW

C: V/G? 8-50

C:FXO CER
CIFXO CER 1OOOPF 6O(r VDCW
CIFXD HZCA 100 PF 2% 300 VirC*
CIFXO CCR 0905 UF 20% 400VLKw

CIFXD CER 0105 UF 20% 4OOVUCW

C IFxO ELECT 600UF 2OOVOCYr

NOT ASSIGNED
CtFXO CtR 0~05 bF 20% 4OOVDCd
CtFXU Ct;R 0~05 bF

o.lUF 50

PF

lOOOFF 600

20% 40oVC;Cti

VDCW

VUCk

Note

c330 0150-0052

c331

0180-0051

C332 0180-0154

CR1
CR2 1901-0030
CR3 190 l-0030 SEMICON DEVICE OIOUE JUNCTI’W

CR4 1901-003G

CR5

CR6

CR7 1901-0036

CR8
CR100 NOT ASSAGNCD

ThRU

1901-0030

1901-0036

1901-0036

CR101 1902-0065

CR102 1910-0002

CR103
CR104

CR105

1910-0016
1901-0040

1902-0074 SEMICON DEVICE: SI DIODE 7.1V

CIFXU CER 0~05 UF 20% 400VGCil

ClFXD ELECT 8UF 35vVOCIw
CIFXD ELECT 43OUF +lOO-l(r% ZSOVUCv(

SEMICON DELICE ClOilE JUNCTIW
SEMICON DEVICE DIOI)E JUNCTIOiv

SEMICON OEVICE DIOLiE JUNCTION
SEMICON DEVICE DIObE

SEMICON DEVICL
SEMICON DEVICE

SEMICONOUCTCR GkVICEIDIODEv AVALAKHE
SEMICON rlEVICt DIODE lN38B

SEMICON DEVICE DlO#E GERhANIUM
SEMICON DEVICE

CIOiJE

CIODE

DIODt

SILICOi\r

CR106 THRU
CR200 NOT ASSIGNED

# See list of abbreviations in introduction to this section

6-4

02056-5

Model 214A

Section VI

Table 6-l

r-

Table 6- 1. Reference Designation Index (Cont’d)

Reference

Designation

CR20 1 1910-0016 SEMIcON DEVICE:DIOuk GERMANIUM
CR202 1910-0016
CR203 1901-0040 SEnICON DEVICErDIODE SILICON
CR204

CR205 NOT ASSIGhkG
CR206 ~910-0002

CR207 1910-0016 SEMICON DEVICE:CIOOE GCRhANluM
CR200 1910-0016 SEMICON DEVICE:DIOUE GERHANXUM
CR209 1910-0016 SEMICON DEVICkXUIOUE GERMANIUM
CR210

CR211 NOT ASSIGNLG
CR212 1910-0016 SEMICON DEVICEtUIODE GERhAhIuM
CR213 1901-0040
CR214 SEHICON DEVICE:DIODE lN3613
CR215 THRU
CR300 NOT ASSIGNEC

CR301
CR302
CR303
CR304 1901-0050 1 SEMICON DEVICLrDlOOE SILICON
CR305 ’ NOT aSSiGNEG

CR306
CR307 1902-0056 SEMICON OEVICEISI DIODE 23.7V LO&
CR308 190 l-0040 SEMICON DEVICE:DlODE SILICON
CR309 1901-0050 SEMICON DEVICErGIODE SILICON
CR310 1901-0050 ( SEMICON DEVICE:UIODE SILICOh

@ Stock No. Description #

SEMIcON DEVICE:DI0uE GERMANIUM

1910-0002 SEMICON DEvICE:DIODE 1N38B

SEMICON DEVlCk :GlOUt INS&B

1901-0050 SEMICON 0EVIC~:DIOOE SILICON

~910-0002

1910-0016
1910-0016

1901-0050

1910-0016

SEMICON DEVICE:CIOuE SILICON

SEHICON DEVICElDIODE GLRhANlUM

1 SLMICON DEVICElClODE GERMANIUM

SEMXCON DEVICEtDlODE SlLXCON

SEMICON DEVICE:DlOut GERMANIUM

Note

CR311 THRU
CR312 NOT ASSIGNED
CR313 1901-005~ SEmICON DEVICE:DIOUE SILICOl\
CR314
CR315 190 l-0050 SEMICON DEVICE:DIOUE SILICON

CR316 NOT ASSIGNED

CR317 190 l-0050 SEMICON DEVICErUIOuE SILICON
CR3l8
CR319
CR320 1902-0224 SEMICON DEVICErDIODE AVALANCHE
CR321 1902-0048 SEWICON DEVICE:DIODE BREAKDOVN

CR322
CR323
CR324
CR325

CR326

CR327

CR328

DL20 1
DL202

DSl

OS2

1910-0016

1910-0016

1902-0048
1901-0041

1901-0041

1902~005fi
1901-0041

1901-0041

9190-0006
9190-0007

1450-0048
1450-0048

SEMICON DEVICE:DlODE GER~ANILIM

SEHICON DEVICE~DIOuE GERMANIUM
NOT ASSIGNED

SEMICON DEVIC~rDIOOE BREAKuO~N
NOT ASSIGNED
SEMICON DEVICE:DIODE SILICON
SEHICON DEVICE rDiODE SILICON
SEMICON 0EVICL:Sl 3IODE 14.7V AON

SEMICON DEVICErDIOOE SILICON
SEMICON DEVlCE:DIODE SILICON

DELAY LINE:1000 OHM O.YUSEC
DELAY LINE: 1000 OHM 0.14USEC

LAMP#PILOT K2H
POWER INDICATOR
LAMP:PILOT NEZh

OVERLOAD INDICATOR

02056-Z

jr: See list of abbreviations in introduction to this section

6-5

--.. _

Section VI
Table 6-l

Reference

Designation

Model 214A

Table 6-1. Reference Designation Index (Cont’d)

@ Stock No. Description # Note

Q.53

DSlOO
DSlOl

OS102 THRU
OS300
OS301

OS302

DS303 2 140-0030

Fl 2llO-0014

Fl
F2

FL1

Jl
J2

J 100 NOT ASSIGNED

JlOl

J102

J103

J200 NOT ASSIGNEO

J201
J202 TWRU
J400 NOT ASSIGNfC
J401 1250-0140 CONNECTClR IbGUY

Kl
LlOl 91409009B COIL:FXD RF 2-2 UH

L102 9140-0115 COILIFXO RF 22Uh

LlO3
LIO4

I-105

L106

THRU

THRU

THRU

T;IRU

NOT ASSI6Ntt.i

2140-0083

2 140-0030

2 140-0030

2 1 lo-0006 FUsElCARTRILGE
2110-0046 FUSEICARTRIGCE l/2 AMP

9110-0082

1250-0083
1250-0083

12 So-0083

0490-0047 RELAYIDPDT 4AHP

9170-0013 BEAD:

9 140-0023 COILrFXO RF 55 UH

9170-0013

LAkP- N&ON
NOT ASS I GNEC

LAMP:GLuIY T2 BULB 10 UA 65V
LAMP:GLbY 12

LAMP:GLc.Vr 12 BULB 10 UA 65V
FUSE I CARTR 1CGE 4 AMP 125V tdAX sLOwi BLOtd

115V OPERATIOF;

ZJOV OPERATION

FILTER:LINE
NOT SEPARATELY REPLACEA6LE PART OF FL1

bbL& 10

JONNECTOR: BNC
'CONNECTOR: BNC

XONNECTOR: BNC

TOROID

BEAD:TOROID

NOT ASSIGNED

L300

L301 00214-66002

L302 NOT ASsIGtdD
L303
L304
L305

00214-66902 FIXED Co1L160 Uh

9170-0016

FIXEL, COIL&O UH

NOT ASSIGNED
BEAD I MAGNET

IC

UA 65V

2 AMP SLObt

10%

BLOW

L306

L307
L3OB 91 lo-0063 REACTORJAUCIU
L309
L400
L401 NOT SEPARATELY REPLACEABLE FARTOF A6

L402

2

THRU

QlOl 1854-0003

4102 THRU
4300 NOT ASSiGNED

9170-0016 BEADJMA~NETIC

NOT ASSIGNED

NOT ASSIGNED

NOT SEPARATELY REPLACEABLE PaRTOF A6
NOT SEPARATELY REPLACEABLE PART OF #I

NOT SEPARATELY REPLACEABLE PART GF hl
TRAhSISTOR:WN

# See list of abbreviations in introduction to this section

SILICON

6-6

02056-4

Model 214A

Reference

Designation

Section VI

Table 6-l

Table 6-l. Reference Designation Index (Cont’d)

($3 Stock No. Description # Note

Cl301

Rl

R2
z:

RS

R6
R7

:t
RIO 0687-1841

Rll
R12
R13 2100-0094

R14
RlS

Rlb 0687-1051

RI7

Ale 0687-4711

Rl9 NOT ASSIGNED

R20
R21 0687-1841 R:FXO COHP 18OK OHMS

R22
R23
A24 NOT ASSAGNED
R25

A26
R27

R2B

R29 NOT ASSlGNtD
R30 2100-0281 RtVAR

THRU

R31

5080-0443

0687-8251
0687-1021
06870102i

0819-0016

0693-6801
0693-6801
0687-1841

0687-1541

0727.0228
0727-0228

0815-0012 RIFXD Wrl tOO0 OhMS 5%

0687-2231

0687-1841
0607-1041

0727.0208

2100-0094

0727-0220

0687-3931

TRANSISTOR:PNP SILICCN

RIFXD COMP kim2M OHMS 10% 1/2ti
RlFXO COHP 1000 OHMS IO% l/2*

RIFXD COMP 1000 OHMS 10% 1/2w
RlFxO WY 1500 OHMS 5% 1Oti
RlFXO CGHP 68 OHMS

RIFXD CCHP 6(1 OHMS 10% 2w
NOT ASSIGNED
RIFXD CuMP 18OK OHMS
NOT ASSAGNED
RlFXli COHP

R,FXD CQMP
RIFXO DtPC 252K OHM
RlVAR CUMP 50K OHMS 30% LIN l/SW
RlFXO D&PC 252K OHM 1% 1/2w
NOT ASSIGNED

R:FXO COMP

RIFXO COMP 470 OHM

RIFXD CWP 22K OHMS

RIFXD CLMP 18OK OHMS
RIFXO C(rMP

RIFXO
RIVAR COMP SOK OHMS 30% LIN 1/5W

R:FXD DtPC 183K OHM

RIFXD COMP 39K OHMS

18OK

15Ok OHMS 10% 1/2w

1HEG

1OOK

&PC

1OOK OHM

WY

100

OkMS

10% 2yI

OHMS

OHM 10% 1/2ul

10% l/21

OHM 10% 1/2y1

20% LIk 1 1/4w

10% 1/2w
10% 1/2w

1% 1/2w

10~

10% l/;Lw

10% l/ZY
10% l/2*

1% 1/2w

1% 1/2w

10% 1/2w

R32
R33
R34 0813-0009 RIFXD

R35
R36

R37 0687-1021 RlFXO COMP
RM
R39 0690-1001 R:FXD COMP
R40 NOT ASSlGNEO
R41

R42 0687-8231 RlFXO COMP B2K OHMS
R43 NOT ASSIGNED
R44
RYS
R46

R47 NOT ASSIGNED
R48
A49 THRU
R

100

0767-0010
0687-1551

0687-1021

0690-1001

0687-4741

0727-0229

2100-0094
0727-0219

0687-3931

RiFXD MET FLH 15K OHMS 5% 3w

RBFXD COHP

NOT ASSlGNED
R:FXO CbMP

R:FXO COMP 10 GhHS

RlFXD COMP 470K OH&S

1*5MEGOHMS 10% 1/2W

WW

125 OHMS

1000

1000

10

10%

OHMS

OHMS 10% 1/2~

OHMS

2W

10% 1/2W

10% lw
10% lls

10% 1/2w

10% l/zw

R:FXD OEPC 265K OHM
RlVAR COMP 50K OHMS 309 LIti
RIFXO DEPC 182K OHM

RCFXD COMP 39K OHMS 10% 1/2ri
NOT ASSIGNED

1% 1/2w
1%

1/2h

i/51

ti See list of abbreviations in introduction to this section

02056-S 6-7

Section VI

Table 6-l

Reference

Designation

@ Stock No.

Table 6-1. Reference Designation Index (Cont’d)

Description #

Model 214A

Note

RlOl
RlO2 0687-1051
R103
R104

R105

H106

R107 NOT ASSIGNEO
R108
R109 0687-2211

THRU

RllO 0761-0011
klll

RI12
Rl13
R114 NOT ASSlCNkO
Rl15 0687-1051 RcFXO COHP IHEG OHM 10% 1/2W
R116 0687-1541

Rl17
Rll8

Rll9

RI20
R121

R122 0687-5631 RIFXO CukP 56K OHM
R123

R 124 NOT ASSIGNED
R125
R126
R127

Rl28
R129
R130
RI31 NOT ASSIGNEO
R132

THRU

0687-4741 RtFXD CuHP 470K OHMS

0686-1045
0686-5135

2100-0074

0687-2211 RIFXCI COHP 220 OHM 10% l/2%

0686-1315
0686-1315

0767-0009

0687-2741
0687-4741

0687-4731
0761-0005

0687-4701
0727-0092
0761-0005

0764-0006

0727-0226

0727-0245

0686-2735

RtFXD CGHP 1MEG OHM
RIFXD COHP 1OOK OHM 5% 1/2W
RtFXO COMP 5lK OHMS 5% 1/2W

RtVAR CbMP lMEG OHM 30% LIN l/4%

RIFXU CUMP 220 OHM
RlFXD Ht;T FLH 3300 OHM 5k

RIFXO COMP
R:FXO COHP 130 OHM 5% 1/2W

RlFXD NET FLM 12K OHM 3W

RIFXD CL/HP
RtFXO CuMP 270K OHMS 10%

RIFXO COMP 470K OHMS
NOT ASSlGNEO
RlFxO COMP 47K OHM
RlFXO MtT OX 2200 OHM 5% lk

RIFXD COMP 47 OHMS
RlFXO OEPC 860 OHM
RtFXO MtT OX 2200 OHh 5%

R:FXO MET FLM 18K OHM 5% 2vr
R:FXD OEPC 250K OHM 1% 1/2k
RIFXO DEPC SOOK OHM

R:FXD COhP 27K OHM 5% 112)

130

OHM 5% 1/2W

1SOK

10% 1/2W

10% l/2&

OHMS

10% 1/2W

10% 1/2W

10%
1% 1/2W

1% 1/2W

10% 1/2W

10% l/2*

1/2W

10% l/2*

1/2W

1yI

lti

R133
R 134

Rl35

RI36 0687-3931 RlFXO COHP 39K OHMS

R137 NSR PART OF A7
R138 0750-0018 R:FXO MET FLM 15K OHMS 5% 1/2W

RI39
R140 NOT ASSIGNED
R141

RI42 0687-5611 RlFXD COMP 560 OHM 10% l/2%
RI43

R 144
R145 NOT ASSIGNED

Rl46
Rl47
R148 0687-4741 R:FXO COMP

RlU9

THRU

2100-0379
0689-6835

2100-0426

0687-1001 RIFXO COMP 10 OHM

0687-3311

0690-1511 RlFXLI COMP 150 OHMS

0606-4755
0687-5641

076 l-0006

RIVAR COMP 1OK OHM 30% LIN 1/4W
RIFXD CONP 68K OHMS 5% 1W
RlVAH COMP 2SOK OHM 30% l/4%

10%

RlFXO COMP 330 OhMS

RIFXO COMP 4.7 HcGOHM 5% 1/2ir
RtFXO COMP 566K OHMS

RIFXD MET FLM

470K

OHMS 10% l/2%

10K

OHM

10% 1/2Y

l/ZW

10% 1/2U

10%

IW

10% l/21

5% 1~

RlSO 0757-0197 R: FXD MET FLM 1500 CHMS 1% 1/'2W

R151 0767-0011 RIFXD MET FLH 20K OHM 5% 3Y

R152

0686-3025

R: FXD COMP 3000 OHMS 5% 1/2W

# See list of abbreviations in

introduction to this

section

6-8

02056-4

Model 214A

Reference

Designation

$3 Stock No.

Table 6-1. Reference Designation Index (Cont’d)

T

c

Description #

Section VI

Table 6-1

Note

-

1

R163

R154

RI55
R156
R157
Rl58

RlS9

RlbO

R200

R201
R202
R203

R204
R205
R206

R207
R208

R209 2100-0424
R210 2100-0424

R211 0687-4701 RIFXD Ccrr,P 47 OhhS 10% 1/2c
R212

II214
R21S
R216
R217
R216

AND

THRU

THRU

0687-1521 RIFXO CIiMP 1.500 OHMS 10% l/2*
0687-1541 RsFXO CbMP 15UK OHMS 10% l/kin
0730-0044
0687-1811 RtFXD CCMP lt)G Gr(MS 10r ~/LI

0727-032 1

2 100-0090
0690-27 2 1
0687-1021

0727-0065
0773-0004

2 100-0043 R:VAR CUMP 500K OHM
0758-0057 RIFXO MET FLM 56~0 OHMS 5% 1/2h

0767-0016 RIFXG MET CX 3K OHM 5% 3lk

0727-02 18

0687-1041 R:FXO CuMP
0727-02 18 RlFXD OtPC 18OK OHM

NOT ASSIGNEO

RfFxD DEPC

R:FXO DtPC 1370 OHMS 1% l/2*
NOT ASS1 GNtD

R:VAR CO&P 2000 uHMS 30% LIA l/3*
RtFxO COkP 27Oc, OHM 10%
RlFXD COMP 1000 OHMS 10% l/iur

RtFXO OEPC 300 GnH lb l/;LW
RIFXO MET FLM 10K OHMS 5% bh
NOT ASSIGNED

RIVAR CUMP 5OK GHM 20b 1/4w(lNCLUDES R210)
RsVAR COMP 50K OHM 20% !/Qc(PART OF

NOT ASSlGNED
RIFXD OEPC @Ok OHM 1% l/L*

i7.5K OhMS 1% I*

1~

101

LIN ZW

1OGK OHM 10% l/~lk

1% l/2*

~209)

R219
R220

R22 1
R222

R223
R224

R225
R226
R227
R228

R229
R230
R2S 1
A232
R233

R234
R23S
R236
R237
R238

R239
R240
R241

0690-1511 RIFXD CuMP
0687-1001 RaFXD C(rMP lc, GhM

0687-56 1 A R:FXO CCMP 560 OHMS

0687.270 1 RIFXD CChP 27 OHMS

0687-1021 R:FXD CCMP 1000 OHMS
0690-3331 RIFXO COMP 33K OHMS

0687- 1021 RlFXD CclMP

0687-1001 RtFXD Cb,MP
0686-6205
0687-8201 RlFXO CLjMP 62 OHM
0687-1031 RIFXD CuHP 10K GHMS

0686-3005

0689-SlO5

0687-4701 RIFXO CuMP 47 OtfMS 10% l/2*
0687-4721 R:FXO CClMP 47Ou OHMS

0687-332 1 RlFXD CuhP 33OU OHMS
0687-1001 RIFXD CC/HP

NOT ASSIGNED

NOT ASSIGNED
NOT ASSlGNtD

NOT ASSIGNEO
R:FXG CirWP 62 OtiM 5% 1/2k

RIFXD CvHP 30 Ohfl 5% 1/2r
RtfXD CuMP 51 OHMS 5%
NOT ASSlCNED

NOT ASblCNEC

150

OHMS

10% 11

100 l/21

10% l/Z&

10% 1/2c

10% l/2&

10% 1~

1000 0t-H.S 10% l/ilk

10

OhM

low l/iW
10~ l/2*

10% l/i&

lk

10% 1/2it

10% 1/2w

10

OhM

10% I/SW

02056-2

I

z See list of abbreviations in introduction to this section

6-9

Section VI
Table 6-l

Table 6-1. Reference Designation Index (Cont’d)

Reference

Designation

R242 0687-1021 RtFXO COMPIOCO OHMS 10% 1/2r
R243

R244 0690-1511 RlFXD CUHP 150 OHMS
R245
R246 NOT ASSIGNED

R247 0757-0086 R:FXD MtT FLM 51 OHMS 2% 1/2U

THRU

8 Stock No. Description #

0686-9105

R:FXlJ COMPg-1 OHMS 5% l/2*

10%

Model 214A

Note

lW

R248
R249
R2SO
R251
R252

R253
K254
R255
R256
R257

R258
R259 2 100-0424

R260

R26

1 0687-4701

R262
R264 NOT ASSIGNED

R265 0767-0016 RlFXD MtT CX 3K OHM 5% 3Y

R266 0727-02 18 RIFXO OtPC LGOK OHM

H267 0687-1041 RtFXO Cc/HP 1OOK OHM
R268

R269

R270

R271

R272
R273

R274 THRU
R300 NOT ASSIGNED
R301 0684-332 1 RlFXD COMP 3300 OHMS
R302 0687-274 1 RIFXO COMP 27OK OHMS
R303 0684-332 1 RtFXO CuMP 3300 OHtiS

R304
R306 NOT ASSiGNED
R307 0684-1001 R:FXO CuMP
R308
Ii309 06830 1545 RIFXO CuMP 15OK OHMS 5% 1/4W
R310 0683-4735 RIFXO CuMP 47K OHMS 5% 1/4W

THRU

THRU

0757-0086
2 100-0090

0690-2721
0687-4701

06870 1021

0727-0065
0773-0004

2 100-0043
0758-0057

2 loo-0424

RIFXD HtT FLM 51 OHMS 2% l/2%
NOT ASSIGNED
RIvAR CUHP 2000 OHMS 30% LlN 1/3rr
RIFXO COHP 2700 OHM

RsFXO COMP 47 OHMS

R:FXD CuHP 1000 OHMS

RtFXo &PC 300 OHM 1%
RIFXO HtT FLM 10K OHMS 5% 5k

NOT ASSIGNED
RIVAR COMP WOK OHM

RtFXD HtT FLM 5600 OHM 5% l/Z%

RIVAR CUHP 50K

INCLUDES R260
RlVAR CUHP 50K OHfl 20% 114~
NOT SEPARATELY REPLACEABLE PARTOF R259

RIFXO COHP 47 OHMS

OhM

10%

1W

10% 1/2W

10% 1/2n

l/ZW

10%

LIN LW

20% l/4*

10% l/2%

1% l/2*

10% 1/2W

0727-0218

0690-1511

06870

1001

0687-5611

0687-2701 R#FXO CuMP 27 OHMS 10% 1/2w

0684-3911

RIFXO DtPC 18OK OHM 1% l/2%
RlFXD CUhP 150 OHMS 10% 1W
NOT ASSIGNED
R:FXO COMP
RIFXO CbMP 560 OHMS 10% l/SW

10

OHM

10% l/21

10%
10%
10% l/4&

10

GhMS

10% 1/4w

R:FXO CQMP390 OHMS 10% 1/4w

1/4W
1/2W

R311
R312
R313
H314
R315

H316
R317

0683- 1045
0684-

1001

0684-3911

0683-2025

0683-

1005

R:FXD CUMP 1OOK OHM 5% 1/4w
NOT ASSIGNEC
RlFXD CUMP

RgFXD CUHP 390 OHMS 10%

R*FXO CUMP2000
NOT ASSAGNED

RrFXD CUMP

10

OHMS 10% 1/4W

OHMS 5% 1/4W

10

OHM 5% l/4%

1/4w

+I See list of abbreviations in introduction to thii section

6-10 02056-2

Model 214A

Reference

Designation

Table 6-1. Reference Designation Index (Cont’d)

@ Stock No. De scription #

Section VI

Table 6-l

Note

I3318

R4l9
R321

R322
R32Y

R324
R325
R326

R327

R328
R329
H330
R331

R332

R333

R334
RS35
R336

R337

R338
R339

R340

R341
R342
R343

R344

R345

R346

R347

A348

0684-3321

0683-1005

0683-1505

0683-1225

0699-0006

0684-1511
0684-1511
0766-0038

0687-2201

0684-1011

0684-4711

0757-0852

0683-0475
0690-823 1

0687-2731

0603-6035
0683-3345

0699-0006

0698-0027

0764-0003
0698-0001
076

l-0019

2100-0102
0684-1031
0684-4741

0777-0003

0773-0008

RIFXO CUHP 3300 OHMS 10% 1/4W
RtFv COWP 10 OHM 5% 1/4w

R:FxO COMP 15 0hHS 5% I/4&

R:FXD COHP 1200 OHMS 5% l/4&

RlFXO C0NP 4.7

OHM 10% 1W

NOT ASSIGNED

RJFXO COMP
R:FXD CUMP 150 OHMS 10% 1/4ik
RIFXO HtT OX 18K OHM 2% 3w

R:fXD COMP 22 0hMS 10% 1/2k
RtFXD CoMP
RIFXO CuHP 470 OHMS 10% 1/4~,

150

OHMS

10% 1/4w

100 OHMS 10% 1/4Yr

R:FXD MET FLM 47,SK OHMS 1% 1/2W

NOT ASSlGNuC10
RtFXO CuMP 4e7 OHMS 5% 1/4k

R:FXD COHP 82K OHM
RtFXD COHP 27K Ot-iHS
RIFXO COHP 68K OHM 5% 1/4W
RIFXO COMP 33OK OHMS 5% 1/4Y
RtFXD COMP 4.7 OHMS 10%

10% l*

10% l/i*

1W

NOT ASSIGNED

RtFXD MET

RlFXD MET FLH 3300 OHM 5% 2cV
RtFXO COHP 4.7 OHM 5% 1/2W
RZFXD MET OX 39K OHM 5% 1%

R:VAR COHP 500K OHMS 30% LIN l/Sk

R:FXD COMP 10K OHH 10% 1/4w
FtFXO COHP 470K OHM 10% 1/4U
RtFXD MET FLM 1300 OhM

RtFXD MET FLM 33K OHM 5% 51

FLM 1600

OHM

5% 3W

10% 7w

R349
RSSO
R351
R352
R353

R344
R355
R356
R357
R358

R359
R360
R361
R362
R363

R364
R365
R366

R367

R368

076 l-0023
0764-0027

0684.5601

0811-1714

2100-0191
2100-0425

2 loo-0425
0684-560

0721-0019

2100-0184

0684.1021
0684-1021
2100-0095

0686-6845
0727-0210

0727-0237
0727-025 1

R2FXD MET FLM 51K OHM 5%
RtFXD MET FLH 74K OHM 5% 2y1
RlFXO COkP 56 OHMS

RtFXD WW 1200 OHM 5% 1OW

RtVAR COMP 250K OHM 20% LIN 1/4W
RtVAR COMP 5OOK OHM 30% l/ZW

R tVAR COHP 500K OHM 3Q% 1/2#

1

NOT ASSIGNED
RIFXD COhP 56 OHMS
RtFXD D&PC 937K OHMS

NOT ASSZGNED
RtVAR COMP 250K OHM
RtFXD COHP
RtFXD COMP
RtVAR COMP 1OOK OHhS 30% LIN 1/5W

RtFXO COMP 680K OHMS 5% 1/2vY
NOT ASSlGNED
RtFxD DEPC
RlFXD DEPC 376K OHM
RtFXD DEPC

1000
1000 OHM 10% 1/4W

lllK OHM 1% 1/2w

683.7K OHM 1% 1/2w

OHM

10% l/4&

10% 1/4r

1%

1/8Yr

10%

LIN LW

10% 1/4k

1% 1/2w

i# See list of abbreviations in introduction to this section

02056-3

6-11

Section VI

Table 6-l

Reference

Designation

@ Stock No.

Table 6-l. Reference Designation Index (Cont’d)

Description #

Model 214A

Note

R369 0607-472 1 RIFXO COMP 4700 OHMS 10% l//J
R370
R400

R401 0684-392 1 R:FXO COHP 3900 OHMS 10% l/r)*
R402 0684-1511

R403
R404

R405
R406 0775-0007
R407 0775-0007 RtFXO MET OX 200 OHM 2% 7W
R408 0775-0007

R409
R410
R411
R412 0757-0172 RlFXD MET FLH 37.4 OHM 1% 1/2W

R413 OlSf-0181
R414 0760-0026

R415 0757-0171
R416 0757-0170 RtFXD MET OX 75 OHM 2% 0.5W
R417 0727-0033
R418 0757-007 1
R419 0727-0033 RtFXD DEPC 61-11 OHM 1% 1/2W

Sl

52

s3
SlOO NOT ASSIGNED

SlOl

THRU

THRU

THRU

NOT ASSIGNED
RtFXO COHP 150 OHMS 10% 1/4W

NOT ASSIGNED

0770-0004
0775-0007

076000027 RtFXD MET FLM 150 OHM 2% 1Y

3101-0056 SW ITCH t TOGGLE
3101-0033 SWITCHtSLlDE

3101-0011 SWITCH SLIDE DPOT 0.5 AMP 125

RtFXD MET FLH 1OK OHMS 54 4W

RtFXD

RtFXD MET 0X 200 0WR 2s 7w
RtFXD MET OX 200 OHM 2% 7W

NOT ASSIGNED

RtFXtJ MET 0X 150 OHM 2111 1/2W

RtFXO MET FLH 75 OHM 2% 1W
RtFXD MET CX 120 OHM 2% 095W
RtFXO DEPC 61.11 OHM 1% 1/2Y

RtFXD MET FLM 247a5 OHMS 1% 0.25Y

MET OX 200 OHtl 2% 7W

DPDT

115V-230V

VDC

s102 3101-0014 SWITCHIPUSH SPOT NE

5103

SlM

SlOS
S106

s200 NOT ASSIGNED
s201

s202 3100-0413 SWITCHI ROTARY

S203 3101-OOlA SWITCHtSLIDE DPOT 0.5 AMP 125 VDC

S204 3 100-04 A6

s205
s400 NOT ASSIGNEO

5401 NSR PART OF A5
S402 3101-0011
fl 9100-0181

T2
TIOO NOT ASSIGNED

TlOl
TlO2

T200 NOT ASSIGNED

THRU

THRU

THRU

TWRU

3 100-04 15 SWITCHtROTARY

31014011

3 100-04 16 SWITCHtROTARY

9 130-0020 TRANSFORMERtPULSE It1 201

PART OF A2

NSRtPART OF A7
SYITCHtSLlDE DPDT 0.5 AMP 125

PART OF A4

SWlTCH:ROTARY
PART OF A8

3WITCH:SLIOE DPDT 0.5 AMP 125
TRANSFORHER:POWEH

VDC

VDC

# See list of abbreviations in introduction to this section

6-12 02056-l

_

Model 214A Section VI

Table 6-l

Table 6-l. Reference Designation Index (Cont’d)

Reference

Designation

@ Stock No. Description #

Note

1201 9130-0020
T202 9 130-0020 TRANSFOHMERIPULSE l:l 20%
T203
T204 9 130-0020 TRANSFOHMERIPULSL 1:~ 20%
T205

T300
T301 00214-66003 TRANSFOR~~ER rpu~se

T302 002 14-66003 TRANSFOKMER:PULSE

Vl 1932-0010
v2 1932-0030
v3
v4
v5 1932-0030

Vb 1940-0001
v7 1932-OClO

TWRU

VB

v9

VlOO NOT ASSIGNED
VlOl 1932-0022 ELECTRON TUfKI DUAL TRZODE 6OJtl

VlO2 1932-0022 ELECTRON TUBE1 DUAL TRZODE (SUJB
v103 1932.0022 ELECTRON Tb6E: DUAL TRIODE 6DJ8
VlO4
ill05
v200 NOT ASSIGNED
v201 1932-0022 ELECTRON TUBES OJAL TRIODE 6UJ8

v202 1933-0006 ELECTRON Tb6El 6CX8 TRIObE PcNTObE

V203 A93200022 ELECTRON TUBE4 OUAL TRIOCiE
V204 1933-0006 ELECTRON TUBE: 6CX8 TRZODE PENTOYE

v205
V206

V207

v300 NOT ASSIGNED

V301 1923-0068 ELECTRON TUBE:6Cw5 PENTODE

V302 1933-0006 ELECTRON TUBE: 6CX8 TRZOOE PtNTOuE

v303 1923-0068 ELECTRON TU6E:6Cw5 PENTODE

v304 A923-0052 ELECTRON TuBEa7534 PENTODE

THRU

THRU

THRU

9 130-0020

1932-0030
1933-0005 ELECTRON TUBE8 7734 TRIOGE PENTOOE

1940-0004 ELEiTRON TUB&i OA2 VOLTAGE REGULATOK

1932-0022 ELECTRON fb6E: DUAL TRIODE 6OJ8

1932.0022
1932-0022

TRANSFOhMERtpULSC 181 20%
TRANSFORMERaPULSC lrl 20%

NOT ASSIGNED

EL:CTRCN TUBE: 6080 DUAL -TRJODE

ELECTRolJ TUBE1 12AX7 TWIN TRIOUE 9 PIN MIN

ELECTRON TUBE8 12AX7 TWIN TRIODE 9 PIN nzN
ELECTROlJ TUBE: 12AX7 TWIN TRIOUE 9 PIN MZN
TUBEaELECTRON 5651

ELE'-TFCK TUBE. 60$0DUAL-TFIODE

ELECTRON TLBE: DUAL TRIOOE 6DJ8

ELECTRON Tb6Et DUAL TRIOGE 6CJJ6

v305 &923-0052 ELECTRON TUBE $7334 PENTODE

V306 3923-0044 ELECTRON T&Et 6CW5 IEL 86) PENTODt

v307 1923-0044 ELECTRON TUBE8 6CY5 IEL 86) PENTODE
V308 1932-0022 ELECTRON TUBE: DUAL TRIODE 6i)J8

Yl 8 120-0078 CABLEzPOWER SVT-18-3 7.5FT.
Xfl 1400-0084 FUSEHOLDER:EXTRACTOR POST TYPE
XT30

1

XT302 1200-0053 SOCKETITUBE 7 PIN HINAT
xv2

xv3 1200-0062 SOCKETITUBE 9 PIN MINIATURE
xv4 A 200-0062 SOCKET1TUBE 9 PIN MINIATURE
xv5 1200-0062 SOCKETITUBE 9 PIN NINIATbRt
XV6

1200-0053 SOCKETITUBE 7 PIN MINAT

1200-0062

1200-0053

SOCKETITUBE 9 PIN HZNIATURt

SOCKETITUBE 7 PIN HINAT

# See list of abbreviations in introduction to this section

02056- 2 6-13

Section VI

Table 6-1

Reference ’

Designation

Model 214A

Table 6-1. Reference Designation Index (Cont’d)

@ Stock No. Description # Note

xv7 1200-0084 SOCKET-TUBE
XV6
xv9
xv100

xv101
xv102 1200-0062

XVI03 1200-0062

xv104 1200-0062

xv105 THRU
xv200 NOT ASSIGNED
xv20 1 1200-0062
xv202 1200-0062 SOCKETlTUBE 9 PIN MINIATURE

xv203 1200-0062
XV204 1200-0062 SOCKETITUBE 9 PIN MINIATURE
XV205 1200-0062 SOCKETITUBE 9 PIN MINIATURE
XV206 1200-0062
XV207 THRU
xv300 NOT ASSIGNEO

xv30
XV302 1200-0062 SOCKETITUBE 9 PIN MINIATURE
xv303 1200-0062
xv304 1200~0064 SOCKET: TUBE
xv305 1200-0084 SOCKET-TUBE

XV306 1200-0062

xv307 1200-0062
XV308 1200-0062

THRU

1

1200-0053 SOCKETITUBE 7 PIN MINAT

1200-0062 SOCKETITUBE 9 PIN MINIATURE

1200-0062

NOT ASSIGNED

SOWETlTUBE 9 PIN MINIATURE
SOCKETITUBE 9 PIN MINIATURE

SOCKETlTUBE 9 PIN MINIATURE

SOCKET&TUBE 9 PIN MINIATURE

SOCKETITUBE 9 PIN MINIATURE

SOCKET,TUBE 9 PIN MINIATURE

SOCKETlTUBE 9 PIN MINIATURE

SOCKETlTUBE 9 PIN MINIATURE

SOCKETlTUBE 9 PIN MINIATURE
SOCKETITUBE 9 PIN MINIATURE
SOCKETITUBE 9 PIN MINIATURE

MISCELLANEOUS

3 IOA-830

00214-DO201
00214-04401
00214-66504
0370-0026

0370-0077

0370-0112

1400-0111
1400-0112

0370-0113

0370-0114

1200-0063
1400-007 1

1400-0110
1490-0030

COVERITOROID FOR L301 AND L303
PANEL @FRONT
ASSY- TclP COVER
ETCHED CKT ASSY (TRIGGER MODE)
KNOB-BLACK
VERNIERS
EXT. TRIG LEVEL

KNOB- 518 Ik BLACK 6AR
TRIGGER HO%

PULSE AUVAkCE
KNOB- BLACK BAR
PULSE WiDTH

PULSE AMPLITUDE
PULSE Pc&IfION
NUT rFUStHOLCER
KNO@:FUSEHCLDER
KNOB- CONCENTRIC BLACK BAR

INT. REP. RATE

KNOB- RtD

INT. REP. RATE VERNIER
LUGICRIMP
ATTACHE5 WIRES TO POSTS ON Pac. bOARDS
CLAMPaTuBE
BODYIFUbEHOLDER
STANDITlLT

# See list of abbreviations in introduction to thii section

6-14 02056-l

Model 214A

Reference

Designation

Table 6-l. Reference Designation Index (Cont’d)

@ Stock No.

3 150-0026 FILTER:aIR
3160-0060

5000-0743 SIDE CObER-7X160!
5040-0417 HOLDERITUBE CLAMP

5060-0767
5060-0752 BOTTOM COVER ASSY 16L FM

5060-0776 KIT-RACK MOUtvT
6980-0003

I

FANBLADE 4 IN.DIAM

FOOT ASSY-FK

TRXM-PLASTIC

Description #

Section VI

Table 6-

Note

1

02056-2

# See list of abbreviations in introduction to this section

6-15

Section VI

Table 6-2

Table 6-2. Replaceable Parts

@ Stock No. Description # Mfr.

Mfr. Part No.

Model 214A

-

T6

-

S

310A-83B

0130-0001

0130-0014
0130-0017
0140-0116

0140-0152
0140-0175
0140-0176

COVER:TOROID FOR L301 AND L303
C:VAR 7-45 PF 500 VDCW

C:VAR CER 5-25 PF NPO
C:VAR 7-50 PF
C:FXD MICA 39 PF 2% 500 VDCW
C:FXD MICA 1000 PF 5% 300 VDCW
C:FXD MICA 39 PF 2% 300 VDCW
C:FXD MICA 100 PF 2% 300 VDCW

0140-0193 C:FXD MICA 82 PF 5% 300 VDCW

0140-0194

C:FXD MICA 110 PF 5% 300 VDCW
0140-0196 C:FXD MICA 150 PF 5% 300 VDCW
0140-0199

0140-0200
0140-0204

C:FXD MICA 240 PF 5% 300 VDCW
C:FXD MICA 390 PF 5% 300 VDCW

C:FXD 47 PF 5% NPO 500 VDCW
0140-0215 C:FXD MICA 80 PF 2% 300 VDCW
0150-0012 C:FXD CER 0.01 UF 20% 1000 VDCW

0 150-0050

015010052

0150-0121 ClFXD CER o.luF 50 VDCw 56269 5i5OA
0 1401004s CIFXD PAPER 0.051UF 10% 400VOCY 14655 BC4S51 lOIs

0160-0127
0160-0207 CIFXD MYLAR OeOlUF 5% ZOOVDCW

016010200 CIFXD MICA 91PF 2% 3OOwVDC

0160-2128

0 170-00 19

0170-0053 CJFXD MY OelUF 20% ZOOVDCW 56~89 19iPlcI402
0180-0024 CtFXD ELECT 4OuF 450VDCW

Ol80-0030

OIBO-0046 C:FXD ELECT 6OOUF 2OOVDCw 56289 03L569
018010049

018010051 CaFXD ELECT 8UF 350VDCw 56i69 032551

018O-OlW
0370-0026

0370-0077 KNOB- 5/8 IN BLACK BAR
0570-0112 KNOB- BLACK BAR

0370-0113 KNOB- CONCENTRIC BLACK BAR 2848U 0370+113
0370-0114 KNOB- RED

049010047 RELAY:DPDT 4AMP
0683-0475

06839 1005

0685 1045 RIFXD COMP 1OOK OHM 5111 l/YW

0685-1225

0685 1505

068E 1545
0683-2025
0683-3345

0683-4735
0683-6835 RlFXD COUP 68K OHM 5% l/YW 01121 CB 6835 i

0684- 1001
0684-1011 RlFXD COMP 100 OHMS 10% l/4*

0684-1021 RIFXD COMP 1000
0484-1051 RaFXD COHP 10K OHM 10% 1/4W

CIFXD CER 10oOPF 600 VDCW

CtFXD CER 0105 UF 20% 400vD~m

CCFXD CER 1.0 UF 2096 25VOCW

ClFXD MYLAR 0033UF 20% 2OOVkCW

CIFXD MY

CIFXD ELECT 120 X40 UF 45OVuCW
C:FXD ELECT 2OUF SoVDCw

CIFXD ELECT 430UF +lOO-10% d50VOCw 56269 4S488
KNOB-BLACK

RcFXD COMP 4.7 OHMS 5% 1/4W
RlFXD COMP 10 OHM 5% 1/4W

R:FXD COHP 1200 OHMS 5% l/4(*
RtFXD COHP 15 OHMS 5% 1/4W
RlFXD COHP ASOK OHMS 5% 1/4w

0.1

UF 5% 200VOCW

R:FXD COMP 2000 OHMS 5% 1/4W
R:FXD COMP 330K OHMS 5% 1/4W

R:FXD COMP 47K OHMS 5% 1/4W

RlFXO COHP 10 OHflS lO# 1/4W

OHM

10% 1/4r 0112l CB li)zl

28480 31OA-83B

72982 50300D2PO

284801 0130 0014
28480 0130-0017
04062 Ia lRCM15E39OG
04062 DM16F102J

I 04062 I DM15E390G (300V)

04062 DM15FlOlG (300V)

.04062 RDM15E82053C

28480 0140-0194

04062 DM15F151J
04062 DM15F241J 300V
04062 DM15F391J 300V
04062 CM15347OJ

04062 DM15E800G 300V

56289 H1038

00oFiH TYPE E

56289 33C

56289 5C13

28480

72136 3~lSF(91PFIG~3OOv)

56289

28463 0170 0019

56269 032441

28480

56289 300198Al

28480 0370-C/026
2848~ 0370~0077
28480 0370-0112

26480 0370-0114
71462 A-114938
01121 ca 4765
(r1121 CblOu5
01121 CB 1045

01121 CB 1225
01121 ct3 15(15
01121 Cb 1545

‘31121

17A 2:

0160-0207

225P33402YPwM

Ul&o

0030

CB 2025

01121 CB 3345

01121 CB 4735

01121 Cb 1001

01121 CP 1011

01121 Cb-1031

1
1
2
1
1
6

1

6

1

3

1
1

2

1
1

7

,
I

I

1

I

1

i

1
5

:

3
:

3

:
1

;
I

L

4

i

:

1
1

I
1

2

!

1

1

I

1

1

I
1

1

;
d

6-16

-

# See list of abbreviations in introduction to this section

02056-4

Model 214A

Section VI

Table 6-2

Table 6-2. Replaceable Parts (Cont’d)

@I Stock No. Description # Mfr.

0684-1511 R:FXD

0684-3321

0684-3911

0684.3921
0684-47 11
0684-4741 F:FXO

0684-5601 R:FXD
0686-1045

0686-1315 RlFXO
0686-2735 R*FXD COMP 27K OHM 5% 1/2W

0686-3025

0686-3005 RlFXD
0686-4755 RlFXO

0686-5135
0686-6205

0686-6845 RFFXD COH? 680K OHMS 5% l/dw

0686-9105

068701001

0687- 1021 RIFXD

0687-1031
06879 1041

0687-1051

0687-1521
0687-1541

0687-1551

0687-1811 RlFXD 1 COHP

0687-1841

0687.2201 RBFXD
0687-2211 RlFXD COMP 220 OHM
0687-2231 RIFXD COMP 22K OHMS

0687-2701

0687-2731

0687-2741

0687-3311

0687-3321
0687-3931

0687-4701
0687-47 11
C687-4721

0687-4731

0687-4741 R:FXD COMP 470K OHMS
0687-56 11
0687-5631
0687-5641 R:FXO COMP 560K OHMS

R:FXD COMP 3300 1/4w
R:FXD

R:FxO COW 3900 OHMS
RlFXD COMP 470 10%

RtFXO COMP 100K OHM 5% 1/2w

R:FXD

RIFXD
RIFXD COHP 62 OHM 5% 1/2W

R:FXD

R:FXO COHP 16 OHM 10% l/&W

RIFXD COHP 1OK OHMS
RtFXO COHP
R:FXO COHP MEG OHM

R:FXO COWP 1500 OHMS

RIFXD COMP 150K OHMS

R:FXO COMP
R:FXD

RJFXD COhP 27 OHMS
RlFXD COMP 27K OHMS

RIFXD COMP 270K OHMS

R:FXD COMP 330 OHMS 10% 1/2W

R:FXD COMP 3300 OHMS
RtFXO COMP 39K OHMS
RIFXD COHP 47 OHMS 10% l/PW 01121
RIFXD COkP 470 OHM 10% 1/2W

R:FXD

R:FXD COMP

R IFXD COHP 560 OHM
RtFXD COMP 56K OHM

COMP 150

COMP 390 1/4w

COMP 470K OHM 10% 1/4)1~

COMP 56 OHMS

COMP 130 OHM 5% 1/2w

COMP 3000 OHMS 5% 1/2W

COMP 30 OHM 5% 1/2w
COHP’ 4.7 MEGOHM 5%

COHP 51K OHMS 5% 1/2w

COMP

COMP

COMP 18OK OHMS
COHP 22 OHMS 10% 1/2W

COMP 4700 OHM 10%

OHMS 10%

OHMS 10%

OHMS 10%

OHMS 114~

10%

1/4w

114~

10% l/4L

l&Y

91 OHMS 5% 1/2W

1000 OHMS 10% L/LW

10% l/2*1

loOK

OHM

10% 1/2~
10% 1/2~

10% l/iw
10% l/dw

1.5MEGOHCIS 10% 1/2W
180

OHMS

10% 1/2r, 01121

10% l/&W

10%

1/2W

10% 1/2r,

10% 1/2U 01121 Lb 27cll

10% 1/2k

10% l/cW

10% l/iiw

10%

1/2w

47K

OHM 10% 1/2W

l/2W

10% l/~w
10% 1/2W
10% 1/2W 01121 t;B 5631

10%

l/iW

Mfr. Part No, TQ R:

01121
61121

01121

01121 CB 3921

01121

01121

CB

1511

CB

3321

CB 391%
CB 4711

ctr 4741

01121 CB 56Gl
01121 Lk+lOcrS

01121 0 1314

b1121 Eti2735

OllZl
01121
01121

Cl121

01121

01121

61121
01121

01121 k.d
01121

& 3o(r5
u3 4755

rd

5135
Lb 6205
id 6845

EB

9105

tir1001
t;b 1021

1031

iia 1041

01121 tb lG31
Ollzl

EB

15;l

(ill21 EB 1541

01121

01121 Eti 1841

01121 EB 22Cl

01121 Et32211

EB

EB

1551

1811

01121 EB 2231

01121 EB 2731
01121 U-2741

61121

EtJ 3321

01121 LB 3331

ktj

47bl

01121 Lb-4711

01121 E&I721

01121 EB4731

01121

61121

EB 4741
E8 5611

Ul121 tB 564k

3
3
2

1

1

1

2

1

2
:

1

1
1

1
1

1

5

9

1
3
3

1

3

1

4

A

2

:.

1

L

1

1

3
5

:

1

4

3

1

1

0687-8201 RIFXD COMP 82 OHM 10% l&W

0687-8231

0687-8251

0689-5105

0689-6835 RIFXD COHP 68K OHMS 5% 1W

0690-1001
0690-15 IA
0690-2721

R:FXD COMP 82K OHMS
RlFXD COMP 8.2M OHMS

RtFXD COMP 51 OHMS 5% 1W

COMP

lo

RlFXD
R:FXO COMP 150 OHMS
R:FXD

COMP 2700 OHM

OHMS

10% 1/2w

10% 1~

10% kw
10% 1U

# See list of abbreviations in introduction to this section

02056-4

10% t/iw

01121 U8201
01122 Iit3 8231
01121

E6

8251

01121 titj 51cd5

OltLl GB 6835

61121

Gb

1001
61121 UB 1511
01121 c18 2721

1

1
1

1

:

4

2

6-17

Section VI
Table 6-2

Model 214A

Table 6-2. Replaceable Parts (Cont’d)

($3 Stock No.

Description # Mfr. Mfr. Part No.

0690-3331 R:FXD COMP 33K OHMS 10% 1W

0690-8231

R:FXD COMP 82K OHMS 10% 1W

R:FXD COMP 68 OHMS 10% 2W

01121 GB 3331

01121 GB 8231 0693-6801

01121

HB 6801

TQ RS

0698-0001 R:FXD COMP 4.7 OHNS 5% 1/2W 01121 EB 47G5

0698-0027 R:FXD MET FLM 1600 OHMS 5% 3W

0699-0006 R:FXD COMP 4.7 OHMS 10% 1W

0721-0019
0727-0033
0?27-0065
0727-0092

0727-0200 RlFXD DEPC 100K OHM 1% l/2% 19701 DCl/i?CRS
0727-02 10 RIFXD DEPC 1llK OHM

0727-02 1% RlFXD DEPC 18OK OHM 1% 1/2W 19701 OC1/2CR5
0727-02 19 RaFXD DEPC 182K OHM 1R 1/2W 19701 CF l/ii 1

0727-0220

0727-0226 R:FXD DEPC 2SOK OHM 1% l/2%
0727-0228

0727-0229 RlFXD DEPC 265K OHM

0727.0237
0727-0245
0727-0251

0727-0321 RIFXD DEPC 1370 OHMS
073010044 R:FXD DEPC 27.5K OHMS
0757-0071 RIFXD MET FLM 247.5 OHMS
0757-0086 RaFXD MET FLH 51 OHMS 2% I/L%
0757-0170 RlFXD MET OX 75 OHM 2% O.5a

R:FXD DEPC 937K OHMS 1% 1/8W 19701 CF l/8 1

RaFXD DEPC 61~11 OHM 1% l/2* 197bl DC l/k CR5 2

RIFXD DEPC 300 OHM l% 1/2W
RIFXD DEPC 060 OHM

1%

l/ZW

1% 1/2W

R:FXO DEPC 183K OHM 1% 1/2W 19701 GC 1/2C R.5

RIFXD DEPC 252K OHM

1% 1/2r 197bl
1% l/21

RtFXD DEPC 376K OHM 1% l/21 19701 CD

RIFXD DEPC 500K OHM

RIFXD DEPC 683e7K ObtM

1% l/2& 19761 DC l/ZC R5 1

1% l/&W 19701 DC l/2B R5

1% l/dW
1% 1Y

1% O.LSY

28480

01121

19701 DC 1/2C
197Cl YC l/2 AR5

19701 UC 1/2A R5 1

19701 DC 1/2c I+5

19701

0698-0027

GB 47Gl

DC

l/iC

DCl/.?ARS 1

R5 2

l/X R5

19701 CF

19701 DC1
19701

07115 c 20 L

07115 c20 1

l/i 1

R5

MFS l/4 T-0

1
21

1
1

2

L

1

1

4

1
1

1
1

1
1

0757-0171
0757-0172
0757-0181

c1757-0117 R:FXD I.;ZT 71~1.1 liG11 CI3.5 1% l/2:**

0757-0852

0758-0018 B:FXD MET FLM 15K OHMS 5% 1/2W

0758-0057

076-0026 RIFXD MET FLW 75 OHM 2% 1W

076010027 RIFXD CIET FLM

076 l-0005 R:FXD HET OX 2200 OHM 5% 1W 07115 C32
0761-0006 RIFXD MET FLM

0761-0011
0761-0019

0761-0023
0764-0003 RIFXD MET FLH 3300 OHM 5% 2r 07115 C 42
07640OOO6

0764-0027 RIFXD MET FLM 75K OHM 5% 2W 28480 0764-0027

0766-0038 RlFXD MET OX 10K OHM 2% 3W 07115 LPI3

0767-0009 R:FXD MET FLH 12K OHM 3W
0767-00 10 RIFXD MET FLH

0767-00 11 RIFXD MET FLH ZOK OHM 5% 3W u7115 LPI-S

0767-0016 R:FXD MET OX 3K OHM 5% 3w 28480 0767-00 16

077O-0004

077EOOO4 R:FXD MET FLW

0773-0008 R:FXD MET FLM 33K OHM 5% 5W 07115 LPI 5

0775-0007 R:FXD MET OX 200 OHM 2% 71 28460 0775-0007

RIFXD MET OX 120 OHM 2% 0.5n
RIFXD WET FLM 37-4 OHM

RIFXD MET OX 150 OHM 2% l/2* 28480 0757-0181

1% 1/2W 19701

R:FXD MET FLM 47.SK OHMS 1% 1/2W

07115 c2u 1

DC

l/ZC

28480

28480’ 0757-0852

0757-cl137

07115 c 20

R:FXD MET FLM 5600 OHMS 5% 1/2W 07115 c 20

150

OHM 2%

1OK

RIFXD MET FLM 33OO OHM 5%
RZFXD flET OX 39K OHM 5% 1W 28480 0761-0019

RZFXD MET FLM 51K OHM 5% 28480 0761~GO23
RtFXD MET FLM

RtFXD MET FLM

OHM 5% 1W 07115 C 32

18K OHM 5%

15K

OHMS 5% 3L 07115 LPI 3

1OK

OHM5 5% 4~

1OU

OHMS 5% 5a 07115 LPI 5

1%

I* 07115 C 32

2W 07115 C 42s

28460 0760~GO26 A
28460 0760-0027

07115 LPI-3

07115 LPI 4

R5 1

1

1

1
I.

2

1

2

1
1

1

I

1

1

1

A

1
1
1

2

1

L

1

4

6-18

?z See list of abbreviations in introduction to this section

02056-3

Model 214A

Section VI

Table 6-2

Table 6-2. Replaceable Parts (Cont’d)

@ Stock No.

0777-0003

0811-1714 R:FXD WW 1200 OHMS 5%

0813-0009

0815-0012

0819-0016

1200-0053

1200-0062

R:FXD MET FLM 1300 OHMS 10% 7W 07115 LPI 7
R:FXD WW 125 OHMS 10% 2W

R:FXD WW 1800 OHMS 5% 1OW

R:FXD WW 1500 OHMS 5% IOW

SOCKET:TUBE 7 PIN MINAT

SOCKETttuBE 9 PIN MINrATuRE

1200-0063 LUG:CRIMP

1200-0084 SOCKET-TUBE

1250-8083

1250-0140 CONNECTOR t6ODY
1400-0071

1400-0084 FUSEHOLDER: EXTRACTOR POST TYPE

1400-0110

1400-0111
14oO-0112

1450-0048
1490-0030 STANDITILT

1854-0003
1901-0030

190 l-0036 SEMICON DEVICE:DIODE
190 l-0040 SEMICON DEVICE:DIODE SILICON 28480 1901 0040
1901-0041 SEMICON DEVICE:DIODE

1901-0050

1902-0048 SEMICON DEVICE: DXODE BREAKDOWN
1902-0055

1902-0056 SEMICON DEVICE,SI DIODE 23~7V

1902-0065

1902-0224
1910-0002

1902-0074

1910-0016
19230OOUY

1923-0052
1923-0068 ELECTRON TUBESICY PENTODE

1c3~-0010

1932-0022

1932-0030 ELECTRON TUBE, lZAX7 TtiIN ThlOGE 9 PIN MIN

1933-0005 ELECTRON TUBE, 7734 TRIODE PENTOOE
1933-0006 ELECTRON TUBEI 6CX8 TRIODE PENT0DE 33173 6CX8

1940-0001

1940-0004
2 100-0043 RtVAR COMP 500K OHM
2 100-0074
2 100-0090 RIVAR COHP 2000 OHMS 30% Lfh 1/3W

CONNECTOR:BNC

CLAHP:TUBE 28480 1400-0071
EODYtFuSEHOLDER 28480

NUT:FUSEHOLDER 28480 1400-0111
KNOBlFUSEHOLDER 28460 1400-0112 1

LAHP:PILOT NEZH 08717 858R

TRANSISTOR:NfN SILICON 28480 1854~0003
SEMICON DEVICE:DIODE JUNCTION 28480 1901 0030

SEMICON DEVICE: DIODE

SEMICON DEVIcElSi DIODE 14*7V 10% 28480 1902-0055
SEMICONDUCTOR DEVICE~DIODE~ AVALANCHE

SEMICON DEvIcEIDIODE AVALANLHE 28480 1902-0224
SEMICON DEVICE:DIODE lN38B 73293 lN3813

SEMICON DEVICE: SI DIODE ‘7.1V 1

SEMICON DEVICE:DIODE GERMANIUM 28480
ELECTRON TUBEI 6cw5 (EL 86) PENTOOk

ELECTRON TUBt’17534 PENTODE 73445 7534/kl3OL

~LrCr;‘F!@~J TUB5 :

;L;CTRON TUBEI DUAL TRIODE

TUBElELECTRON 5651 86684 5651

ELECTRON TUBE: OA2 VOLTAGE hEGLLAT0R 86684 tiA2

RIVAR COHP 1MEG OHM 30% LIN 1/4Yr 28480 2100 GO74

Description # Mfr. Mfr. Part No. TQ RE

1OW

SILICON
SILICOI\(

10%

GO80 DUC-TRIODE

10% LIN

owe

2W

28480

91637

94310 RW29V182

71785 11151-11

71785 1215111060 22
28UtlU
71785

28480 1250-0083
93737 8446-l

75915 3UiO14

28480 1490 0030 1

28480 1901 0036 3
28480

28480 1901 0050
28460 1902 0048 2

28460 1902-CO56 1
28460 1902-0065 I

73445 EL 86/6CW5 2
28480 1923-0068 2

86684 ii03915 2
73445 6oJemc 86 Y
00001 12AX7 3
07138 7734

284650 2100 0043 2
28480 2100 0090 2

0811-1714

CS 2

1200-0063
101-04-11-100

1400.GllO

1901 0041

1910-0016

12

1

1

1

1

1

1
3
3

1

1

1

1

1

L

i

4

4

4
8

1

1

4

2

1

3
1

1

1

2 100-0094 RcVAR COHP 50K OHMS 30% LIN l/SW
2 100-0095
2100-0102 RlvAR COMP 5oOK OHMS 30% LIh l/SW

2100-0184 RtVAR COMP 250K OHM
2100-0191 R,VAR COHP 250K OHM 20% LIN 1/4W

RIVAR COMP 1OOK OHMS 30%

10%

LIN

LIN 2W

# See list of abbreviations in introduction to thii section

02056-4

1/5W 28480 2100 0095

28480
28480 2100

28480
28480 2100 0191

2100 0094 3

c;lOZ

2100

0184 1

1

A

1

6-19

Section VI

Table

6-2

Table 6-2. Replaceable Parts

Model 214A

(Cont'dj

@ Stock No.

2 100-0281
2100-0379

2 LOO-0424
2100-0425
2 10010426

21 LO-0006 FUSEt CARTRIDGE 2
2110-0014 FUSEtCARTRIDGE 4 AMP I25V MAX SLOW BLOW

21 lo-0046
2 140-0030

2140-0083

3100-0413

SlOO-0414
1100-0415 SWITCHIROTARY

310010416

3101-0011

3101-0014
3101-0033 SWITCHtSLIDE

3101-0056 SWZTCHJTOGGLE DPOT

3140-0052
315010026
3160-0060

5000-0743
5040-04 I?
5060-0752

5060-0767

5060-0776 KIT-RACK MOUNT

6VDo-0003

D12010078
9100-0111
91 lo-0063

91 lo-0082 FILTERtLlNE
9 lfo-0020
9 1x0-0023

9140-0098
9140-OLl5 COILaFXO RF 22UH

9170-0013 BEA :
917010016
9190-0007
9190-0008 DELAY

00214-0020 1

002 14-0440 1
00214-61902

00214-61903 SW ITCH ASSEMBLY
00214-61904

002 14-6600 1 COAXIAL COIL rASSERBLY

002 14-66002

002 14-66003 TRANSFORWERkPULSE

002 14-6650 L ETCHED CIRCUIT ASSEMBLY (POkER SUPPLY)

002 14-66502 ETCHED CZRCUlT ASSEMBLY TRIuGERClkCUIf

002 14-66503

RtVAR WY 100 OHMS 20% LIN 1/4n

RtVAR

R tvAR COMP SOK OHM 20% 1/4W
RtVAR COHP SOOK OHM 30s l/2*
RtVAR COHP 250K OHM 30% l/4*

FUSEtCARTRlDGE l/2 AMP
LA\nP:GLOW f2 BULB

COMP AOK OHM 30%

LAMP:NEON
SWITCH:ROTARY

SWITCHtROTARY
SWITCHtROTARY

SWITCH:SLIOE DPOT 0.5 AMP 145 VciC
SWITCHtPUSH SPDT NE

I:CTOR:

FILTERtAIR

l/175

FAN:BLADE 4 IN DIAM

SIOE COVER-7X16FH

HOLDER t TUBE CLAP

BOTTOh COVER ASSY 16L FM
FOOt ASSY-FR

TRIM-PLASTIC

CABLE:POWER SVT-18-3 7.5FT*

TRANSFORMER tPOWER

REACTOR:AUDIO

1RANSFORHER:PULSE ltl 20s
COIL:FXD RF 55 UH
COfL:FxO RF 2.2 UH

TCRCID

BEAOIMAGNETIC
DELAY LZNE:lOOO OHM Om14USEC

LINE:1000 OHM Om4USEC

PANEL :FRONT

AISY- TOP COVER
TRIGGER MOOE SWITCH ASSEMBLY
SW ITCH ASSEMBLY tPULSE POSITAON

FIXED COIL:80 UH

ETCHED CIRCUIT ASSEMBLY (OUTPUT)

Description # Mfr.

LIN 1/4h

AMP

SLUW

BLOW

10

UA 65V

HP 3470 Rl't:

10s

Mfr. Part No. TQ RE

28480

28480

28480 2100-0424
28480
71590 SERIES S*TYFE

2100 0281 A
2100 G379

2100-0425 2

70-l

hp

hp
26k80
24455

74276

28480

2 1 lo-0046

NE 83 3
A 091
3100-0413 1

264&J 3100~u414 1
28460 3100-0415
28403

42190
82389

%i?,o %%K4,12

28430

28480 3150-0026

28460
28480

28480
28480 5060-9767
28480 5060-0776

28480
80509 6A-201

70903
28480
28480 9110-0063

56289 JN10/1012B
56289 312861
28480

2848iJ
9980U 2150-32

72656

02114

28480 9190-0007

28480 9190-0008

28460 00214-00201
28480 00214-04401

28480
28460 002 14-61903
28U80

28480 00214-66001

3100-0416 2

4603 r(

4S-1106

3140-CO52

hp

5000-0743
5040-G417 1
5060-C752

KH4147 1
91(rO-G181

9140-0023 1
9140 0098 A

CFlG2Y

56-596-65138

00214-61902 2

GO2

14-b 1904

28460
28480 UO214-66003
2848U 00214-66501

00214-66002 2

28480 00214-66502

28480

00214-665uJ

3

1
1

1
1

1

1

1

1

1

1
1
1

1

1

1
1

1
1

1
1

1

5

:

2

1
1

1

1

1

2

1

2

1

1

1

6-20

$ See list of abbreviations in introduction to this section

---

02056-5

___._ .

Model 214A

Section VI

Table 6-2

Table 6-2. Replaceable Parts (Cont’d)

002

14-66504

00214-66506

00214 -69503

Description #

ETWEO CIRCUIT ASSEMBLY (TRlGGER MOLE)
ETCHED CIRCUIT ASSEHBLV

A’

TTENUATOR ASSEMBLY: INCLUDES CABLES,

CONNECTOR, S401

~- -.

Mfr.

I I

Mfr. Part No,

I

284th~ CNLl4-66504
28480 00214-66506

28480 00214 -69503

L-

02056-2

L

!

* See list of abbreviations in introduction to this section

6-21

ss;btix-6 v;

Model 214A

Table 6-3. Code List of Manufacturers.

The followmg code numbers are from the Federal Supply Code for Manufacturers Cataloging Handbooks H4-1
(Name to Code) and H4-‘2 (Code to Name) and their latest supplements.
supplements used appear at the bottom of each page.
suppliers not appearing in the H4 Handbooks.

Code

Manufacturer

NO.
tlOOO0 U.S.A. Common

00136 McCoy Electronics
00144 ADC Products Inc

S”bsldlary of Magnetic Controls co

,age tleCtlOnlC* L‘orp.

uuzij

Cemco Inc

00281

Humrdlal CoIlon, CalIf.

00334

Mlcroflo” co., 1°C. Valley Stream, N.Y.

00348
00373

Gallock Inc.,

Electronrcs Products DIV.

10656

Aerovox Corp. New Bedford, Mass.
Amp. Inc. Harrrsburg. Pa.

10779

A~rcrsft Radro Corn Boonto”, N. J.

00781

Northern Englneerrng Laboratories, 1°C.

00815

Sangamo Eleclrrc Co., Prckens Div.

00853

Gee Engrneerrng Co. Las Angeles, Calrf.

00866

Carl E. Holmes Corp. Los Angeles, Calrf.

0089 1

009 29

Mrcrolab Inc. Lrvrngston, N. J.

01002 General Electrrc Co

0 1009

Alden Products Co. Brockto”. Mass.
Allen Bradlev Co.

01121

Lrtto” Industrres, Inc.

01255

TRW Semrconductors, Inc.

01281

Texas Instruments. Inc.,

01295

01349

01589

Amerock Cord.

01930

Pulse Eoglneerlng co.

01961

Ferroxcube Corp. of America

02114

Cole Rubber and Plastrcs Inc.

02286

Amphenol.Borg Electronrcs Corp.

02660

02735

02171

02771
03508
03705
03797
03877
03888
03954

04009

04013

raurus Corp. Lambertville, N. J.
04222
04354
04404

04651

04713

Frltron Co., Inc. Weslern DIV.

04732

04773
04796
048lI
04870
05006

05271
05347

05397 Unron Carbrde Carp Cleveland, Ohro

05593 lllumrlron!c Engineering Co. Sunnyvale, CalIf.
05616 Cosmo Plaslrc

00015-42

Revised- July, 1966

Capacrtor Dept

Transistor Products DIV. Dallas, Texas

The Allrance Mfg. Co.

Paclflc Relavs. 1°C.

Radro Corp. 01 Amer~ea. Semrconductor

and Materrals DIV. Somerville, N. J.

Vocalrne Co. 01 Amerrca. Inc.

Hopkins Englneerrng Co.
G. E. Semrconductor Prod. Dept. Syracuse, N.Y.
Aoex Machrne 8 Tool Co.
Eidema Corp. Compion, ‘Calif.
TransItron Eleclrrc Corp.
Pyrolllm Resrstor Co., Inc.
Smger Co., Orehl DIV.

Frnderne Plan1

Arrow, Hart and Hegeman Elecl. Co.

HI-Q Division of Aerovox
Precirron Paper Tube Ca.
Oymec Drvrsron of Hewlett-Packard Co.

Sylvanra Electrrc Products, Mrcrowave

clev1ce DIV.

Motorola, Inc., Semrconductor Prod DIV.

Automatrc Electrrc Co. Northlake, Ill,
Sequora Wrre co Redwood City, Calrf.
Pleclslan COll sprrng co.
P.M. Motor Company
Twenlreth Century Plastics, Inc.

Weslrnghouse Electric Corp.

Semr-Conductor Depl.

Ullronlx, ,nc

Linde D~vrsron

(c/Q Eleclr~cal Spec Co. l Cleveland, Ohio

Any sqpl~er of U.S.

MQU”l Holly springs, Pa.

Mlnneapolls. Mlnn

Beverly tlrlls, ‘Calrf.

Old Saybrook, Co”“.

San Fernando, Calil.

Mountarn View, CalIf.

Los Angeles, Calif.

Kenlet Dept

Address

Hochester, N. T.

DanIelson. corm.

Camden, N. J.

Burlington, WlS.

PIckens. S.C.

Garnswlle, Fla

Mrlwaukee. Wis.

Lawndale. Calrf.

Alliance, Ohro

Van NUVS CalIf.

Rocirfdrd, Ill,

Santa Clara. Calrf.

Saugerhes, N. Y.

Sunnyvale. Calif.

Chrcaga. III.

Davton. Ohro

Wakefreld, Mass.

Cedar Knolls. N.J.

Sumervrlle. N. J.

Hartford, Con”.

Myrlle Beach, S. C.

Chrcago. III.

Palo Alto, Calil.

Phoenrx. Arrzona

Culver crty. Calrl.

El Monte, Calrf.

Westchester, III,

Youngwood. Pa.

San M&O, CallI.

Alphabetical codes have been arbitrarily assigned t0

Code
No. Address

Barber Colman Co.

05624
05728 Tiflen Optrcal Co.

05729 Melro.Tel Corp. Westbury, N.Y.
05783 Stewart Eng~neerlng Co. Santa Cruz, Calif.
05820 Wakelreld Engrneerrng Inc. Wakefreld, Mass.
06004 Bassrck Co., The Budgeport, Co”“.

Raychem Corp.

06090

Bausch and Lomb Oplrcal Co.

06175

E. T. A. Products Co. of Amerrca

06402

Amatom Efeclronrc Hardware Co Inc.

06540
06555

Beede Eleclrrcal Instrument Co., Inc.

06666

General oevrces co., Inc. Indranapolrs, Ind.

06751

Semcar DIV. Componenls Inc. Phoenrx. Arrz.
Torrrnelon MIP. Co.. West DIV.

06812

Varian Assoc. Ermac DIV. San Carlos, CalIf.

06980

Kelwn Electric Co. Van Nuys, Callf.

07088

Drartran Co.

07126

Transrstar Electronrch Coro

07137

Westrnghouse Electrrc Corp.

07138

Electronic Tube Div.

07149

Frlmohm Corp. New York, N. Y.

07233

Cl”ch.Graph!k Co. City 01 Industry, Calrf.

07261

Avnet Cow Culver City, Calif.

Farrchrld Camera 8. lnsl. Corp.

07263

Semrconductor Div.

Mrnnesota Rubber Co.

07322

Brrtcher Corp., The Monterey Park, Calrf.

07381
07700

Technrcal Wrre Products Inc. Cranford, N. J.

079 IO

Conlrnental Devrce Corp. Hawthorne, Calif.

07933

Raytheon Mfg. Co.,

Semrconductor DIV.

Shockley Semr-Cooductor Labaralarres

07966
07980

Hewlett-Packard Co., Boonton Radro Orv.

08145

U.S. Engrneerrng Co. Las Angeles. Calif.

08289

Blrnn, Delberl Co. Pomona. Calrf.

08358

Burgess Battery Co.
Brrstal Co.. The

08664

Sloan Company Sun Valley, Calif.

08717
08718

ITT Cannon Eleclrrc Inc., Phnenrx DIV.
CBS Electronrcs Semrconductor

08792

Operations, Drv 01 C. B.S. Inc.

Mel.Rai”

08984

Babcock Relays DIV

09026

Texas Capacrtor Ca

09134

Alohm Electronics

09145
09250

Electro Assemblres. Inc. Chicago, Ill.

09569

Mallory Battery Co of

Canada, Ltd. Toronto, Ontarro, Canada

General Transrstor Western Corp.

10214
10411

TI-Tal, Inc. Berkeley, Calrf

10646

Carborundum Co. Niagara Falls, N.Y,

11236

CTS of Berne, Inc. Berne. Ind.
Chrcaeo Teleohone 01 Calrlornra. Inc.

11237
11242

Bay State Electronrcs Corp. Waltham, Mass.

11312

Teledyne Ioc., Mrcrowave DIV. Palo Alto, Calrf.

11534

Duncan Electronrcs Inc. costa Mesa, CallI.

11711

General lnstrumenl Corp. Semrconduclar

DIV.. Products GIQUQ
11717 Imp& Electronic. In;.
11870 Melabs, Inc Palo Alto, Calrf.
12136 Phrladelphra Handle Co Camden, N. 1.
12697 Clarostat Mfg. co.
12859 Nrppo” Eleclrlc Co., Ltd.

Roslyn Herghls, Long Island. N. Y.

” -

Mouotarn View. Calil.

Mountain Vrew. Calrf.

Nraaara Falls. Dntarro. Canada

-

-

Redwood City, Calrf.

New Rachelle, N.Y.

Los Angeles, Calrf.

So. Pasadena, Calrf.

The date of revision and the date of the

Rockford, Ill,

Rochester, N.Y.

Chicago, Ill.

Penacook. N.H.

Van Nuys, Calrl.

Pasadena. Caltf.

Mlnneapolls, Ml”“.

Elmrra. N.Y.

Mlnneapolls. Mlnn.

Palo Alto, Calrf.

Rockaway. N.J.

.Waterbory, Corm.

Phoenrx, Arrzona

Lowell, Mass.

Indranapolrs, Ind.

Costa Mesa, Calif.

HQUS~Q~, Texas

sun Valley, CalIf.

Newark. N. J.

Buena Park, Calrf

Dover, N.H.

Tokyo. Japan

code
No.

Mmwfocturcr Address

12881

Metex Electronrtr Corp. Clark, N. J.
Delta Semrconductor Inc. Newport Beach, Calif.

12930

Drckson Electronrcs Corp. Scottsdale, Arizona

12954

Thermolloy Dallas. Texas

13103

Telefunken (GmbH) Hanover, Germany

13396

Mrdland-Wrrght DIV. 01 Pacific Industrres, Inc.

13835

&m-Tech Newbury Park, Calrf.

14099

Calif. Resistor Corp. Sanla MQnlca, Calrl.

14193
14298

Amerrcan Components, Inc. Conshohocke”, Pa.
ITT Semrconductor, A OIV. 01 Int. Telephone

14433

A Telegraph Corp. West Palm Beach. Fla.

Hewlett-Packard Company Loveland, Cola.

14493

Cornell Doblier Electrrc Carp.

14655
14674

Cornrng Glass Works Cornrng, N. Y.

I4752

Electra Cube Inc. So. Pasadena, Calrf.

14960

Williams Mlg. Co. San Jose, Calrf.

Webster Electlonrcs Co. New York. N. V.

15203
15291

Adlustable Bushing Co. N. Hollywood, Calrf.
Micron Electronrcs

15558

15566

Amprobe Inst. Corp. Lynbrook. N.Y.
Twentreth Century Carl Sprrng Co.

15772

Amefco Inc. Mt. VIM, Calif.

15818

Dave” DIV. Thomas A. Edison Ind.

15909

McGraw-Edrson Co. Long Island Crty. N. Y.

Spruce Pine Hrca Co. Spruce Prne, N. C.

16037
16 179

Omnr-Spectra Inc. netroll, Ill.

16352

Computer Orode Corp. Lodi, N.J.

16688

Ideal Prec. Meter Co., Inc.

De Jur Meter DIV. Brooklyn, N.Y.

16758

Delco Radio Div. of G.M. Corp. Kokomo, Inc.

17109

Thermonetics Inc. Canoga Park, Calrf.

17474

Tranex CODQo”y Mountarn Vrew, Calif.

17675

Hamlrn Metal Products Corp. Akron, Ohro

17745

Angstrohm Prec. Inc. No. Hollywood. Calrl.

18042

Power Desrg” Pacillc Inc. Palo Alto, Calil.

18476

Ty-Car Mfg. Co., Inc. Holllston. Mass.
TRW Elect. Comp. Div.

18486

Curtrs Instrument, Inc. Mt KISCQ, N.Y.

18583

E. I. DuPont and Co., Inc. Wrlmington, Del.

18873
18911

Durant Mlg. Co. Mrlwaukee, WIS.

19315

Bendrx Corp., The

Eclrpse-Po!neer Div.

Thomas A. Edlron Industries, DIV. of

19500

McGraw-Edison Co.

LRC Electronrcs Horseheads, N. Y.

19644

Electra Mfg. Ca. Independence. Kansas

19701

General Atronrcs Corp. Phrladelphra, Pa.

20183

ExeCutone, Inc. ~Qng Island Crty, N.Y.

21226
21335

Fafnrr Bearing Co., The New Brrtarn, Corm.

21520

Fansteel Metallurgrcal Corp. N. Chicago, III.

Blttlsh Radio Electronrcs Ltd Washrngla”, D.C.

23183
24455

G.E. Lamp Drvrsrao

24655

General Radro CD. Wesl Concord, Mass.

26365

Grres Reproducer Corp. New Rochelle. N. Y.

26462

Grobel Frle Co. of Amerrca, Inc.
Hamrlton Watch Co.

26992

Hewlett-Packard Co.

28480

G. E. Recervrng Tube Dept.

33173

Leclrohm Inc.

35434
36196

Stanwyck Call Producls Ltd.

37942

P.R. Mallory 8 Co. Inc. Indraoapolrs, Ind.
Mechanrcal lndustrres Prod. Co.

39543

Mlnlature Preclrlo” Bearings. Inc.

40920

Muter Co. Chrcago. III.

42190

C. A. Norgren Co. Englewood, Cola.

43990

Fwm. FSC. Handbook Supplements

H4-1 Dated JULY 1965
HI-2 Dated NDV 1962

Kansd Crty, Kansas

Garde” Crty, Long Island, N.Y.

Santa Clara, Calrl.

West Orange, N. J.

Nela Park, Cleveland, Ohro

Hawkesbury, Dntario, Canada

Newark. N.J.

Des Pla!“es, Ill.

Teterboro, N. 1.

Carlstadt, N. J.

Lancasler. Pa.

Palo Alto, Calif.

Owensboro, Ky.

Chrcago, III.

Akron, Ohio

Heene. N.H.

6-22

02056-4

Model 214A

Section VI

Table 6-3

Table 6-3. Code List of Manufacturers (Cont’d)

Code
No.

Manufacturer Address

44655

Ohmlte Mfg. Co. Skokle. III.

46384

Pen” Eng. & Mfg. Corp. Doylestow”, Pa.

47904

Polaroid Corp. CambrIdge, Mass.

48620

Prec~s~o” Thermometer & Inst. Co.

49956

Microwave 8 Power Tube DIV Waltham. Mass.

52090

Flowan Controller co.

52983

Sanborn Company Waltham. Mass.

54294

Shallcross Mfg. Co. Selma, N. C.
Simpson Electi~c Co. Chicago, III.

55026

sonotone Carp Elmsford, N. Y.

55933
55938

Raytheon Co. Commercial Apparatus &

Systems DIV. So. Norwalk, Con”.

56137

Spauldlng F~bre Co., Inc. Tonwanda, N.Y.

56289

Sprague Eleclr~c Co. North Adams, Mass.
Telex, Inc. St. Paul. MInII

59446
59730

Thomas 8 Betls Co

60741

Trlplett ElectrIcal Inst. Co. Bluffto”. Ohlo

61775

Unto” Switch and SIgnal, OIV. of

Westinghouse Air Brake Co. Ptttsburgh, Pa.

Un~veisal Electric Co. Owosso, Mlch.

62119
63743

Ward-Leonard Eleclr~c Co. MI. Vernon, N. Y.

64959

Western Electric Co., Inc. New York, N.Y.

65092

Weston Inst. Inc Weston-Newark Newark, N. J.

66295

IVlttek Mlg. Co. ChIcago. III.

66346

Revete Waliansak DIV. Mlnn. M\“\ng F.

Mfg. co.

70276

Allen Mfg. Co.

70318

Allmetal Screw Product Co., Inc.
Atlantic India Rubber Works, Inc. ChIcago. III.

70485
70563

Amperlte Co., Inc.

70903

Relde” Mfg Co.
B,rd Eleclron~c Corp. Cleveland. Ohlo

70998

Blrnbach Radla Co. New York, N.Y.

71002
71041

Baslo” Gear Works 01v 01 Murray Co.

of Texas Qulncy. Mass.

71218

Bud Radio, Inc. Willoughby. Ohlo

71286

Camloc Faslener Corp. Paramus. N J.

71313

Cardwell Condenser Carp

71400

Bussmann Mfg. OIV of McGraw-Edlso” Co.

71436

Chicago Condenser Carp Chlcago, III.

71447

CalIf. Spring co., 1°C PICO-RIvera. CalIf.

71450

CTS Corp. Elkhart, Ind.

71468

ITT Cannon Electric Inc. Los Angeles, Cal~f.

71471

Cinema Plant, HI-Q DIV. Aerovox Corp.

71482

c P. Glare & co. ChIcago. III.

71590

Centralab DIV. of Globe Union Inc.

71616

Commercial Plastics Co. ChIcago, Ill.

71700

Cornlsh Wire Co., The New York, N.Y.

71707

Cat0 COII co., 1°C.

71744

ChIcago Mlnlature Lamp Works Chicago, Ill.

71753

A.O. Smith Corp., Crawley DIV.

71785

Cinch Mfg. Co.,

71984

DOW Corning Corp.

72136

Electra Motive Mfg. Co., Inc. Wllllmanlic, Con”.

72354

John E. Fast Co., DIV. Vlctoreen Inslr. Co.

72619

Dlallght Corp.

72656

IndIana General Corp., Electronics DIV.
General Instrument Corp., Cap. DIV. Newark, N. J.

72693

Drake Mfg. Co. Chxago, III.

72765

Hunh H. Ebv Inc. Phlladelohla. Pa.

72825
72928

Gudefnan co.

Howard B. Jones DIV.

Southampton. Pa.

Weslmlnster. Md.

Garden Ctty. N. Y.

Union City, N. 1.

Llndenhursl L. I., N. Y.

Providence, R. I.

West Orange. N. J.

Elizabeth, N.J.

St. Paul, Mi”“.
Hartlord, Con”.

Chicago, Ill.

St. LOUIS, MO.

Burbank, Callf.

Milwaukee. Wis.

ChIcago, Ill,

MIdland, Mich.

Chicago, III.

Brooklyn, N. Y.

Keasby. N. J.

Cht;agQ, Ill.

Code

Mallulocturcr Address

No.

Robert M. Htdley Co. Los Angeles, Callf.

72364
72982

Efle Technolog!cal Products, Inc. Erie. Pa.

73061

Hansen Mfg. Co., Inc. PrInceto”, Ind.

73076

H.M. Harper Co. Chlcago, Ill.

13138

Hellpot DIV. of Beckman Inst., Inc.

73293

Hughes Products ll~v~s!on of Hughes

Aircraft Co. Newport Beach, Callf.

73445

Amperex Electronic Co. I DIV. of North America”

Phllllps Co., Inc.

Bradley SemIconductor Corp. New Have”. Con”.

73506

Carllng Electric. Inc. Hartford, Conn.

73559
73586 c1rcie F Mfg co Trenton. N J

73682 Geotee K. Garrett Co.. DIV. MSL

Industries Inc. Philadelphia, Pa.

73734

Federal Screw Producls Inc. ChIcago. Ill.

73743

Fischer Special Mfg. Co. Cincinnati, Ohio

73793

General lndustrler Co., The Elyria, Ohio

73846

Goshen Stamping 8 Tool Co. Goshen, Ind.

73899

JFD Etectronlcs Corp. Brooklyn. N.Y.

73905

Jennings Radio Mfg. Corp. San Jose. Callf.

74276

Slgnallte Inc. Neptune, N. J.

74455

J.H. W~nns. and Sons

lndustrtal Condenser Corp. ChIcago, ill,

74861
74868

R. F. Products Dlvlsion of Amphenol-Borg

ElectronIts Corp. Danbury, Con”.

14970

E. F. Johnson Co. Waseca, Minn.

15042

lnternatlonal Resistance Co. Philadelphia, Pa.

75378

CTS Knights Inc. Sandwlch, III.

15302

Kulka Electric CarporatIon Mt. Vernon, N.Y.
Lenz Electrlc Mfg. Co. Chtcago, III.

75818

LIttlefuse, Inc. Des Plainer, III,

75915
76005

Lord Mfg. Co.
C. W. Marwedel San Ftancisco, Calif.

76210

76487

James Mullen Mfg. Co., Inc. Malden, Mass.

76493

J. W. Miller Co. Los Angeles, CalIf.
Cinch-Monadnock, Div. of Untted Carr

76530

Fastener Corp. San Leandro, Callf.

16545

Muell.er Electric Co. Cleveland, Ohio

76703

National U”IO” Newark, N.J.

76854

Oak Manufacturing Co. Crystal Lake, Ill,

77068

Bendix Corp., The

Bendix Pacific Div. N. Hollywood, Calif.

77075

Paclflc MelaIr co.

77221

Phanostra” Instrument and Electronic Co.

11252

Phlladelphla Steel and Wtre Corp.

71342

American Machine & Foundry Co. Potter

8 Blumfletd DIV. Princeton, Ind.

71630

TRW Electronic Components DIV. Camden, N. J.

77638

General instrument Corp., Rectiller DIV.

77764

Reslrtance Products Co.

77969

Rubbercraft Corp. of Callf.
Shakeproof Olvislon of llllnois Tool Works

78189

Signal lndlcator Corp. New York, N.Y.

78283

Slruthels-Dunn Inc. Pitman, N. J.

18290
78452

Thompson-Bremer 8 Co. ChIcago, III.

78471

Ti Hey Mfg. Co. San Francisco, Callf.

78488

Stackpole Carbon Co. St. Marys, Pa.

78493

Standard Thomson Corp. Waltham, Mass.

78553

TInnerman Products, Inc. Cleveland, Ohlo
Transformer Engineers San Gabriel, CalIf.

78790

uc\n\te co. Newtowlle. Mass.

76941

79136

Waldes Kohlnoor Inc. Long Island City, N. Y.

79142

Veeder Root, Inc. Hartford, Conn.

79251

Wenco Mfg. Co.

79727

Continental-Wlrt Electronics Corp.
Zlel!ck Mfg. Corp. New Rochelle. N.Y.

79963

Fullerton, Calif.

Hlcksvllle, N.Y.

WInchester, Mass,

EII~, Pa.

San Francisco, Callf.

South Pasadena, Calif.

Philadelphia. Pa.

Brooklyn. N.Y.
Harrisburg. Pa.

Torrance, Calif.

Elgl”. III.

ChIcago, ill.

Philadelphia, Pa.

Code
No.

Manulocturcr

80031

Mepco DIVISION of Sessions Clack Co.

a0120

Schnltrer Alloy Ploducts Co. Elizabeth. N. J.

T!mes Telephoto Equipment New York, N.Y.

80130
80131

Electronic lndustrles Assoclatlon. Any brand

Tube meeting EIA Standa,ds.Washlngton, DC.

80207

Unlmax Switch. DIV Maxo” Electronics Corp.
United Transformer Carp New York, N. Y.

80223

Oxford Electr,c Corp. ChIcago. III.

80248

Bourns Inc RiversIde. Callf.

80294
80411

Acre DIV. 01 Robertshaw Canlrols Co.

80486

All Star Ploducts Inc. Defiance, Ohlo

80509

Avery Adhesive Label Corp. Monrovia, Callf.

80583

Hammarlund Co., Inc. New York, N. Y.

80640

Stevens, Arnold, Co., Inc. Boslan, Mass.

81030

lntefnatlonal Instruments Inc. orange, CO”“.

81073

GrayhIll Co. LaGrange, Ill.

81095

Triad Transformer Carp.

al312

WInchester Elec. DIV. Litton Ind., Inc.

a1349

Mllltary Speclflcatlon

at483

lnternatlonal Rectlfler Corp. El Seg;“bo: ca;,l:

a1541

A~rpax Electronics, Inc.

81860

Barry Controls. OIV Barry Wright Carp.
Carter Preclsto” Electric Co. Skokle. III.

82042
82047

Sperll Faraday Inc., Copper Hewtt

Electric DIV. Hoboken. N. J.

Jellers Electronics D~vlslon 01 Speer

82142

Carbon Co. Du BOIS, Pa.

a2170

FaIrchIld Camera 8 Inst. Corp.,

Defense Prod. Dtvislon Clifton, N. J.

82209

Magulre Industries, Inc.

82219

Sylvania Electric Prod. Inc.

Electronic Tube DIVISIQ~

Astro” Corp. East Newark, Harr\so”, N, J,

82376
82389

SwItchcraft. Inc. Chicago, Ill.

82647

Metals & Controls Inc. Spencer Products

82768

Phllllps-Advance Contlol Co. Jallet. III.

82866

Research Products Corp. Madlsan. WIS.

a2877

Ralro” Mfg. Co., Inc. Woodstock, N.Y.

a2893

Vector Electronic Co.

83053

Western Washer Mfg. Co.
Carr Fastener Co. CambrIdge, Mass.

83058
83086

New Hamprhlre Ball Bearing. Inc.

83125

General Instrument Carp., Capacitor DIV.

B314R

ITT Wire and Cable DIV.

83186

Victory Engineering Corp. Sprlngfleld. N. J.

a3298

Bendix Corp.. Red Bank DIV. Red Bank, N. J.
Hubbell Carp Mundelsl”. Ill.

83315
83330

Smllh. Herman H., Inc. Brooklyn, N.Y.

Cenlral Screw co. ChIcago, Ill.

83385

Gavltt Wire and Cable Co

83501

DIV. 01 Amerace Carp. Brookfleld. Mass.

83594

Burroughs Corp. ElectronIt Tube DIV.

UnlQn CarbIde Corp. Consumer Prod. DIV.

83740
83777

Model Eng. and Mfg., Inc

83821

Loyd Scruggs Co. Feslus, MO.

83942

Aeronautical Inst. & Radio Co. Lodl. N.J.

84171

Arco Electronics ln~.

84396

A. 1. Glesener Co., Inc. San Franc~sco, Callf.

84411

TRW Capacitor DIV. Dgallala, Neb.

84970

Sarkes T$rz~an, Inc. Bloom~nglon, Ind.

85454

Boonton Molding Company Boonlon, N. J.

Walllngford. Con”.

CambrIdge, Mass.

Greenwich, Cann.

Los Angeles, Callf.

Pelerborough. N. H.

Los Angeles, CallI.

Great Neck, N.Y.

Address

Morristown. N.J.

Columbus, Clhw

VeIlIce, CalIf.

Dakvllle, Corm.

Watertown, Mass.

Emporium, Pa.

Allleboro, Mass.

Glendale, Cal~f.

Darlington. S. C.

Plalnfleld, N.J.

New York, N.Y.
HuntIngton. Ind.

00015-42
Rwsed: July, 1966

02056-4

From: FSC. Handbook Supplements

HI-1
H4-2

Dated JULY 1965
Dated NOV. 1962

6-23

Section VI

&de

MumJfocfurcr Address

No.
85471 A.B. Boyd Co. San Franctsco, CallI.

85474 R. M. Bfacamonfe 8 Co. San Franc~sco, Calif.
85660 Kolled Kolds. Inc. Hamdeo, Corm.
85911 Seamless Rubber Co. ChIcago, III.
86197 Cl~ftan Precwoo Products Co., Inc.

86579 Precision Rubbel Products Corp. Dayton, Ohlo
86684 Radio Colp. of America, Electronic

Camp. 8 Devlcer DIV. Harrison, N. J.
87034 Marco Industries Anaheim, Caflf.
87216 Phllco Corporation (Laosdale Dlvislont

87473 Western Fibrous Glass Products Co.

87664 Van Waters g Rogers Inc. San Franc~sca, Calif.
87930 Tower Mfg. Corp. Providence. R. I.
88140 Cutler-Hammer. Inc. Llncaln, Ill.
88220 Gould-NatIonal Eattenes, foe. St. Paul. Mlnn.
88421 Federal Telephone 2. ifadlo Corp. Clifton, N. J.
88698 General MlllS, Inc. Buffalo, N. Y,
a9231 Graybar Electric Co. Oakland, Calif.
69665 UnIted Transformer Co. Chicago, 111.
90179 US Rubber Co., Consumer Ind 8 Plastics

Prod. DIV.
90970 Bearing Englneerlng Co. San Franc~sco, CalIf.
91260 Connor Spring Mlg. co. San Francisco, CalIf.
91345 Mlfler Dtal g Nameplate Co. El Monte, Caflf.
91418 Radio Maler~als Co. Chicago, Ill.
91506 Augat Inc. Attleboro, Mass.
91637 Dale Elecfronlcs. Inc. Columbus, Nebr.
91662 Elco Corp. Willow Grove, Pa.
91737 Glemar Mfg. Co., Inc. Wakefield, Mass.
91827 K F Development Co. Redwood City, Callf.
91886 Malco Mfg Co.. Inc
91929 Honeywell Inc., Micra Swllch DIV.

91961 Nahm-Bras. Spcrng Co. Oakland, CalIf.
92180 TIU-Connector Corp. Peabody, Mass.
92367 Efgeet Optical Co. Inc. Rochester, N.Y.
92196 Universal fndustues. Inc. City ol Industry, Calif.
92607 Tensollte fnsulated WII~ Co., Inc.

93332 Sylvania Electric Plod. Inc.

Semiconduclar OIV.
93369 RobbIns and Myers, Inc.
93410 Stevens htfg co., IllC
93929 G.V. Controls

Clifton Heights, Pa.

Lansdale. Pa.

San Francisco. Caflf.

Passaic, N. 1.

ChIcago, If1

Fleeport. III.

Tarrytown, N.Y.

Woboro. Mass.

New York. N.Y.

Mansfield, Ohio

Llvlogston, N. J.

Table 6-3. Code List of Manufacturers. (Cont’d)

Code Code
No. Mmufochlrsr Address

94137 Genelal Cable Corp.

94144 Raytheon Co., Camp. DIV., Ind.

Camp. Operations Qumcy. Mass.

94148 Sclentlflc Eiectlonlcs Products. Inc.

94154 Tong-Sol Electric, Inc. Newark, N.J.

94197 Curhss-Wright Corp. Electronics DIV.

94222 Sooth Chester Corp. Chester, Pa.

94310 Tru-Ohm Products Memcor Components Div.

94330 Wire Cloth Products, Inc. Bellwood, Ill.

94682 Worcester Pressed Afumwm Corp.

94696 Magnecraft Eleclr~c Co. Chicago, III.

95023 George A. PhIlbrick Researchers. Inc.

95236 Alfles Products Corp. Mlaml. Fla.
95238 ContInental Connector Corp. WoodsIde, N. Y.
95263 Leecraft Mfg. Ca., Inc. Lang Island, N.Y.

95264 Lerco Electronics, Inc. Burbank, Cafif.
95265 National Co11 Co. Sheudan. Wyo.
95275 Vitramon. Inc. Bridgeport. Coon.

95348 Cordos Corp.
95354 Methode Mfg. Co.

95712 Dage Electric Co., Inc.
95984 Slemon Mfg. Co.
95987 Weckessel Co. ChIcago, Ill.
96067 Hugg~ns Laboratones Sunnyvale, CalIf.
96095 Hi-Q DIV. of Aerovox Corp. Olean, N.Y.
96256 Thordarson-Meissner Inc. Mt. Carmel, Ill.
96296 Solar Manufacturing Co. Los Angeles, Calif.
96330 Carlton Screw Co.
96341 hcrowave Assoc!ates, Inc.
96501 Excel Transformer Co.
97464 Industrial Retainlog Ring Co.
97539 Automatic g Pwcislon Mfg.
97979 Reon Resistor carp.
97983 Litton System Inc., Adler-Westrex

Commun. DIV.
98141 R-Tronc~s, Inc. Jamaica, N.Y.
98159 Rubber Teck, Inc. Gardena, Calif.
98220 Hewlett-Packard Co., Moseley Div.

98278 Mwodot, ItIC.
98291 Sealectro Corp.

Bayonne, N. J.

Loveland, Cola.

East Paterson, N.J.

Huntington. Ind.

Worcester. Mass.

Boston, Mass.

Bloomfield. N. J.

Chicago, III.

FrankIln, fnd.

Wayne. Ill.

ChIcago, III.

Burlington, Mass.

Oakland, Callf.

Irvington, N. J.

Englewood, N. J.

Yonkers, N.Y.

New Rochefle, N.Y.

Pasadena, Calif.

So. Pasadena, Calrf.

Mamaroneck, N. Y.

No. Manufacturer Addl-?SS

98376 Zelo Mfg. CO.
98731 Genelaf MIIIs Inc., Electronics Oiv.

98734 Paeco DIV. 01 Hewlett-Packard Co.

98821 North Hills Electranlcs, Inc. Glen Cove, N.Y.
98978 lnternatlonal Electronic Research Corp.

99109 Columbia TechnIcal Corp. New York. N.Y.
99313 Varm Assoc!ates Palo Alto. C&f.
99378 Atlee Corp.
99515 Marshall Ind. Elect. Products DIV.

99707 Control Swtch OIVI~IO~, Controls Co.

99800 Delevan Electronics Cup. East Aurora, N.Y.
99848 WIICO Corporation
99934 Renbrandt, Inc.

99942 Hoflmao Electronics Corp.

99957 Technology Instrument Corp. of Calil.

THE FOLLOWING HP VENDORSHAVENONUMBER
ASSIGNED IN THE LATEST SUPPLEMENT TO THE
FEOERAL SUPPLY CODE FOR MANUFACTURERS
HANDBOOK.

OOOOF

OOOOM

ooaoz
OOOAA

OOOAB
OOOBB

OOOMM
OOONN
OOOQQ
oooww
OOOY Y

Model 214A

Burbank, Calif.

Mmneapolls, Mtnn.

Palo Alto, CalIf.

Burbank, Callf.

WInchester, Mass.

San Manno. CallI.

of America El Segundo, Callf.

Indianapolis, Ind.

Boston. Mass.

Semiconductor DIV. El Monte, Callf.

Newbury Park. Calll.

Malco Tool and Die Los Angeles, Callf.
Weslew Coil Div. of Automatic Ind., Inc.

Willow Leather Products Corp.
British Radio Electronics Ltd.

ETA England
Preclslon Instrument Components Co.

Rubber Eng. g Development Hayward, Callf.
A “N” 0 Mfg. Co. San Jose, Callf.
CQQltlOn Oakland, Calif.
Cal,fornla Eastern Lab. Burlington, CalIf.
S. K. Smith Co. Los Angeles. CalIf.

Redwood City, CallI.

Newark, N. 1.

Washington. D. C.

Van Nuys, Callf.

06480 North American Electronics, Inc

Lynn, Mass.

28520 Heyman Mfg. Co. Kenilworth, N. J.

78526

Stonyck Winding Co. Newburgh, N. Y.

00015-42

Aevlsed: July, 1966

6-24

From. FSC.

Handbook Supplements
H4-I Dated JULY 1965
HI-2 Dated NOV. 1962

02056-l

Model 214A

Appendix I

APPENDIX I

MANUAL CHANGES

Appendix I contains information on changes required
to adapt this manual to aMode 214A Pulse Generator

manufactured prior to the printing of this manual.
Check for your instrument serial prefix in the left­hand column of the table below and make the numbered
changes indicated. Make the changes in the order
listed. If the serial prefix of the instrument is not
812- or listed below, the information to adapt this

manual to that Model 214A will be found in the change

sheet supplied with the manual.

Errata in the manual, refer to the change sheet.

Note

These changes adapt the manual to cover
the standard instrument as manufactured
and therefore do not apply to an instrument

subsequently modified by the factory or in
the field.

Serial Prefix

806­722­71%, 704-

632­550­545­539­506-

449­443­414­350­339­337-

316-

Make Changes

19
19,18
19,18,17

19, 18,17, 16
19, 18,17,16,1,2
19,18,17,16, 1 thru 3
19,18,17,16,1 thru 4
19,18,17,16,1 thru 5
19,18,17,16,1 thru 7
19, 18,17, 16, 1 thru 6, 8
19,18,1’7,16,1 thru 6,8,9
19,18,17,16,1 thru 6,8 thru 10

19,18,17,16,2 thru 6,8 thru 12
19,18, 17, 16, 2 thru 6,8 thru 10
12 thru 14
19,18, 17, 16,2 thru 6, 8 thru 10
12 thru 15

For information on

CHANGE 1

Page 5-20, Figure 5-14,

R150: Change to 1650 ohms.

Section VI, Replaceable Parts,

R150: Change to @ Stock No. 0727-0111; R: fxa,

depc, 1650 ohms, l$,, 1/2W; Mfr 19701; Mfr
Part No. DC l/2 CR5.

CHANGE 3 (Cont’d)

Page 5-23, Figure 5-17,

C319: Change to fixed capacitor, 20 PF.

Replaceable Parts,

C319: Change to @ Stock No. 0150-0035; C: fxd,

cer, 20 PF, lo%, 600 VDCW; Mfr 71590; Mfr

Part No. DD200.

CHANGE 4

Page 5-22, Figure 5-16,

Change R315 to 820 ohms.

Section VI, Replaceable Parts,

R315: Change @ Stock No. to 0864-8211; R: fxd,

camp, 820 ohms, lo%, 1/4W; Mfr 01121; Mfr
Part No. CB8211.

CHANGE 5

Page 5-22, Figure 5-16,

Q301: Change 5080-0443 to 2N2190.

Delete R331.

Section VI, Replaceable Parts,

Q301: Change to @ Stock No. 1850-0103; Tran-

sistor: 2N2190; Mfr 28480; Mfr Part No.

1850-0103.

Delete R331.

CHANGE 6

Section VI, Replaceable Parts,

CR325: Change to @ Stock No. 1901-0050; Mfr

28480; Mfr Part No. 1901-0050.

CHANGE 7

Page 5-21, Figure 5-15,

R243: Change value to 510 ohms.

Section VI, Replaceable Parts,

R243: Change to @ Stock No. 0686-5115; R: fxd,

camp, 510 ohms, 5%, 1/2W; Mfr 01121; Mfr
Part No. EB 5115.

Page 5-19, Figure 5-13,

CHANGE

Vl, V7: Change to 6AS7.

Section VI, Replaceable Parts,

Bl: Change to @ Stock No. 3140-0010; Motor:

AC, l/175 HP, 2800 RPM; Mfr 73793; Mfr
Part No. ER 6667.

Vl, V7: Change to @ Stock No. 1932-0019;

Electron Tube: 6AS7GA, Duo-Triode; Mfr
33173; Mfr Part No. 6AS7GA.

2

CHANGE 3

Page 5-9, Paragraph 5-26,

Delete steps s, t, u, v.

02056- 5

CHANGE 8

Page 5-21, Figure 5-15,

Delete C206, C223, C235.
R243: Change value to 68 ohms.
R308, R314: Change value to 56 ohms.

Section VI, Replaceable Parts,

Delete C206, C223, C235.

R243: Change to @ Stock No. 0687-6801; R: fxd,

camp, 68 ohms, lo%, 1/2W; Mfr 01121; Mfr
Part No. EB 6801.

R308, R314: Change to @ Stock No. 0684-5601;

R: fxd, camp, 56 ohms, lo%, 1/4W; Mfr
01121; Mfr Part No. CB 5601.

I-l

- - -- -------

Appendix I

Model 214A

CHANGE 9

Page 5-22, Figure 5-16,

R323, R338: Change value to 10 ohms.
Add R324 (10 ohms) in parallel with R323.

Add R339 (10 ohms) in parallel with R338.

Section VI, Replaceable Parts,

R323, R338: Change to @ Stock No. 0687-1001;

R: fxd, camp 10 ohms, lo%, 1/2W; Mfr01121;

Mfr Part No. EB 1001.

Add R324, R339: @ Stock No. 0687-1001; R: fxd,

camp, 10 ohms, lo%, 1/2W; Mfr 01121; Mfr
Part No. EB 1001.

CHANGE 10

Page 5-20, Figure 5-14,

Change value of R122 to 120K ohms.

Page 5-22, Figure 5-16,

Delete F2 and R342. (R334 is connected directly

to - 22OVI. )

Section VI, Replaseable Parts,

Delete R342.
Delete F2.

R122: Change to R: fxd, camp, 120K ohms, 10%

1/2w; @ Stock No. 0687-1241.

CHANGE 11

Page 5-20, Figure 5-14,

Change value of R150 to 2250 ohms.

Section VI, Replaceable Parts.

R150: Change to R: fxd, car. film, 2250 ohms,

lo/o, 1/2W; @ Stock No. 0727-0120.

CHANGE 12

Section VI, Replaceable Parts,

CR308: Change @ Stock No. to 1910-0011.

CHANGE 13

Page 5-20, Figure 5-14,

Change value of R150 to 3000 ohms.

Section VI, Replaceable Parts,

R150: Change to R: fxd, car. film, 3000 ohms,

l%, 1/2W; g@ Stock No. 0727-0124.

CHANGE 14

Page 5-20, Figure 5-14,

Change value of Cl22 to 47 pf.
Change value of R146 to 8.2 megohms.
Change value of R149 to 20K ohms.
Change value of R151 to 37K ohms.

Page 5-23, Figure 5-17,

Change value of R352 to 1000 ohms.

Section VI, Replaceable Parts,

C122: ChangetoC: fxd, mica, 47pf, 5%, 500vdcw;

@ Stock No. 0140-0204.

R146: Change to R: fxd, camp, 8.2 megohms,

lo%, 1/2W; @ Stock No. 0687-8251.

R149: Change to R: fxd, met flm, 20K ohms, l%,

1W; s@ Stock No. 0761-0004.

R151: Change to R: fxd, car. flm, 37K ohms, l%,

1W; ‘@ Stock No. 0730-0049.

CHANGE 14 (Cont’d)

R352: Change to R: fxd, met flm,

W; @ Stock No. 0761-0021.

5%

1000 ohms,

CHANGE 15

Page 5-22, Figure 5-16,

Add Series RLC circuit, R314, L302, C308, as

shown in partial schematic Figure I-l.
Change value of R347 to 2000 ohms.
Change value of R348 to 68K ohms.

Section VI, Replaceable Parts,

R347: ChangetoR: fxd, metflm, 2000ohms, 50/o,

7W. @ Stock No. 0776-0003.

R348: Change to R: fxd, camp, 68K ohms, 5’%,

2W; @ Stock No. 0692-6835.

C308: Add C: fxd, cer, .05pf, 20%, 400 vdcw;

@ Stock No. 0150-0052.
L302: Addcoil, fxd, 27uh; @ StockNo. 9140-0107.
R304: AddR: fxd, camp, 2200ohms, lo%, 1/4W;

$,i? Stock No. 0684-2221.

v301

FROM

CR301 -

L302
27UH

7-Q

C.%? T

v303 ---

e-e

s-w

1

7

---

---

---

2

T3002

,4

Figure I-l.

CHANGE 16

Page 5-20, Figure 5-14,

L105: Delete

R120: Change location to that shown below.

R/O

I-2

02506-3

__-.- -^..-..-- .-.. _-

Model 214A

Appendix I

CHANGE 16 CONT’D

Page 5-22, Figure 5-16,

Add R320 (10 ohms) in series along main signal

path between cathodes of CR324and CR325.

CHANGE 17

Page 5-19, Figure 5-13,

C9, Cl0 and Cll: Delete.

Section VI, Replaceable Parts,

C9, Cl0 and Cll: Delete

CHANGE 18

Page 5-9, Paragraph 5-26,

Delete steps dd through ii.

CHANGE 18 (cont’d)

Page, 5- 12, Figure 5-7,

Delete CR105 and R152.

Page 5-20, Figure 5-14,

Delete R152 and CR105.
R143: Change to 27 ohms.

Page 6-4, Table 6-1,

Delete CR105 entry.

Page 6-8, Table 6-1,

R143: Change to hp Stock No. 0687-2701 R: fxd

camp 27 ohms 10% l/2 w

Delete R152.

CHANGE 19

Page 5-19,

R4: Change to 1800.

Page 6-7,

R4: Change to hp Stock No. 0815-0012 R: fxd ww

Figure 5-13,

Table 6-1,

1800 ohms 5% low.

02056-2

I-3