Tektronix 317 schematic

DEPARTMENT OF THE ARMY TECHNICAL BULLETIN

CALIBRATION PROCEDURE FOR

OSCILLOSCOPE,

TEKTRONIX TYPES 317 (AN/USM-154)

AND RM17

Headquarters, Department of the Army, Washington, DC

22 September 1975

TB 9-6625-1172-35, 30 August 1974, is changed as follows:

TB 9-6625-1172-35

Change 1

The title is changed as shown above.

1. Remove old pages and insert new pages as indicated below. New or changed material is indicated by a vertical bar in the margin of the page.

Remove pages Insert Pages

1 through 6 1 through 6

2. File this change sheet in front of the publication for reference purposes. By Order of the Secretary of the Army:

FRED C. WEYAND

General, United States Army

Official: Chief of Staff

PAUL T. SMITH

Major General, United States Army The Adjutant General

Distribution:

To be distributed in accordance with DA Form 12-34A (qty rqr block No. 75), requirements

for Calibration Procedures Publications.

This publication is a courtesy quick copy from the UNITED STATES ARMY ADJUTANT GENERAL PUBLICATIONS CENTER, ST. LOUIS, MISSOURI, to meet your needs while we are replenishing our regular stock.

TB 9-6625-1172-35

10. Crt Geometry and Astigmatism graticule line. fig. 2) until markers are parallel with vertical

a. Performance Check

(1) Connect time-mark generator (A6) to TI VERTICAL INPUT, using cable (B5) and if necessary, adapter (B2). Adjust time-mark generator for .1 mS marker output.

(2) Adjust TI POSITIONING controls to aline top of markers with top horizontal graticule line and extending across full horizontal range of crt. If markers displayed on crt are not parallel with vertical graticule lines, perform b(l) below.

(3) Reposition TI waveform to display both the baseline and markers. If sharp focus of crt display cannot be obtained by adjusting front panel FOCUS control, perform b(2) below.

b. Adjustments

Table 4. Calibrator Accuracy

Test Instrument Ac/Dc Voltmeter Indications

VOLTS PEAK-TO-PEAK

Switch Settings. Min Max

in conjunction with FOCUS control for sharpest focus of displayed baseline and markers.

11. Calibrator Accuracy

position) and remove V875 (fig. 3), or for TI's with S/N 280 and above V883 (fig. 3) (V573, fig. 4).

CAL OUT connector and chassis ground, using leads supplied with ac/dc voltmeter and, if necessary, adapter (B 1).

(1) Adjust R861 (fig. 1) (GEOM ADJ R861,

(2) Adjust R860 (fig. 1) (ASTIG R856, fig. 2)

a. Performance Check

(1) Turn TI POWER switch to off (down

(2) Turn TI POWER switch to ON. (3) Connect ac/dc voltmeter (A2) between TI

(vdc).

50 48.5 51.5 20 19.4 20.6 10 9.7 10.3

5 4.85 5.15 2 1.94 2.06

1 0.97 1.03 .5 0.485 0.515 .2 0.194 0.206 .1 0.097 0.103

.05 0.0485 0.0515

(4) Turn TI VOLTS PEAK-TO-PEAK switch (6) Turn TI POWER switch to off (down) and to 100. If ac/dc voltmeter does not indicate bet- replace vacuum tube removed in (1) above. ween 97 and 103 volts dc, perform b below. (7) Turn TI POWER switch to ON and VOLTS

PEAK-TO-PEAK switch to OFF.

(5) Repeat technique of(4) above for settings b. Adjustments. Adjust CAL ADJ R879 (fig. 3) and indications listed in table 4. Ac/dc voltmeter. (CAL. ADJ. R566, fig. 4) for a 100-volt dc indicawill indicate within limits specified. tion on ac/dc voltmeter (R).

¶¶ U.S. GOVERNMENT PRINTING OFFICE: 19754656681174

DEPARTMENT OF THE ARMY TECHNICAL BULLETIN

CALIBRATION PROCEDURE FOR

OSCILLOSCOPE,

TEKTRONIX TYPES 317 AND RM17

Headquarters, Department of the Army, Washington, D.C.

30 August 1974

SECTION I. IDENTIFICATION AND DESCRIPTION

Test instrument identification ------------------------------------------------------------------- 1 2 Calibration data card, DA Form 2416--------------------------------------------------------- 2 2 Reporting of errors ---------------------------------------------------------------------------------- 3 2 Calibration description ----------------------------------------------------------------------------- 4 2

II. EQUIPMENT REQUIREMENT FOR OSCILLOSCOPE, TEKTRO -

NIX TYPES 317 AND RM17 (A-LEVEL) Equipment required --------------------------------------------------------------------------------- 5 3 Accessories required ------------------------------------------------------------------------------- 6 3

III. PRELIMINARY OPERATIONS FOR OSCILLOSCOPE, TEKTRO-

NIX TYPES 317 AND RM17 (A-LEVEL) Preliminary instructions --------------------------------------------------------------------------- 7 5 Equipment setup ------------------------------------------------------------------------------------- 8 5

IV. CALIBRATION PROCESS FOR OSCILLOSCOPE, TEKTRONIX

TYPES 317 AND RM17 (A-LEVEL) Crt mechanical alinement ------------------------------------------------------------------------- 9 5 Crt geometry and astigmatism ----------------------------------------------------------------- 10 6 Calibrator accuracy --------------------------------------------------------------------------------- 11 6 Vertical dc balance ---------------------------------------------------------------------------------- 12 7 Vertical amplifier and preamplifier gain, attenuation, and stability --------------- 13 8 Attenuator compensation ------------------------------------------------------------------------- 14 11 Sweep triggering -------------------------------------------------------------------------------------- 15 12 Magnifier gain and registration ----------------------------------------------------------------- 16 12 Horizontal amplifier and sweep length ------------------------------------------------------ 17 13 Sweep timing ------------------------------------------------------------------------------------------- 18 13 Rise time ------------------------------------------------------------------------------------------------ 19 14 Power supply ------------------------------------------------------------------------------------------- 20 14 Final procedure --------------------------------------------------------------------------------------- 21 15

V. EQUIPMENT REQUIREMENTS FOR OSCILLOSCOPE, TEK-

TRONIX TYPE 317 (C-LEVEL) Equipment required --------------------------------------------------------------------------------- 22 15 Accessories required ------------------------------------------------------------------------------- 23 16

VI. PRELIMINARY OPERATIONS FOR OSCILLOSCOPE, TEKTRO-

NIX TYPE 317 (C-LEVEL) Preliminary instructions --------------------------------------------------------------------------- 24 17 Equipment setup ------------------------------------------------------------------------------------- 25 17

*TB 9-6625-1172-35

Paragraph Page

*This bulletin supersedes TB 9-6625-787-50, 8 December 1969, and TB 9-6625-1172-50, 31 May 1968., including all changes.

VII. CALIBRATION PROCESS FOR OSCILLOSCOPE, TEKTRONIX

TYPE 31 7 (C-LEVEL) Calibrator ----------------------------------------------------------------------------------------------- 26 17 Crt alinement ------------------------------------------------------------------------------------------ 27 18 Crt astigmatism --------------------------------------------------------------------------------------- 28 18 Crt geometry ------------------------------------------------------------------------------------------- 29 18 Sweep triggering ------------------------------------------------------------------------------------- 30 19 Magnifier gain ----------------------------------------------------------------------------------------- 31 20 Horizontal amplifier gain -------------------------------------------------------------------------- 32 20 Sweep length ------------------------------------------------------------------------------------------ 33 20 Magnifier registration ------------------------------------------------------------------------------- 34 20 1 µSEC sweep timing ------------------------------------------------------------------------------ 35 20 10 µSEC/DIV sweep timing ---------------------------------------------------------------------- 36 21 2 µSEC/DIV linearity ------------------------------------------------------------------------------- 37 21 .5 µSEC/DIV sweep timing ----------------------------------------------------------------------- 38 21 .2 µSEC/DIV linearity ------------------------------------------------------------------------------ 39 21 .04 µSEC/DIV sweep timing and linearity -------------------------------------------------- 40 21 Variable attenuator balance --------------------------------------------------------------------- 41 22 Amplifier gain and attenuation ------------------------------------------------------------------ 42 23 Attenuator high-frequency compensation -------------------------------------------------- 43 23 Attenuator input capacitance -------------------------------------------------------------------- 44 23 Preamplifier low-frequency compensation ------------------------------------------------- 45 24 Delay line high-frequency response ---------------------------------------------------------- 46 24 Amplifier bandwidth---------------------------------------------------------------------------------- 47 25 Preamplifier bandwidth ---------------------------------------------------------------------------- 48 26 Power supply ------------------------------------------------------------------------------------------- 49 26 Final procedure --------------------------------------------------------------------------------------- 50 27

TB 9-6625-1172-35

Paragraph Page

IDENTIFICATION AND DESCRIPTION

1. Test Instrument Identification This bulletin provides instructions for the A-level

calibration of Oscilloscope, Tektronix Types 317 and RM17 and C-level calibration of Oscilloscope, Tektronix Type 317. The manufacturer's instruction manuals were used as the prime data source in compiling these instructions. The oscilloscope will be referred to as the "TI" (test instrument) throughout this bulletin.

a. Model Variations. Type RM17 is the rackmounted version of type 317. Wherever difference exists between types, adjustments and parameters for type 317 are listed in parenthesis for A-level calibration.

b. Time and Technique. The time required for this calibration is approximately 3 hours, using the dc and low frequency technique.

2. Calibration Data Card, DA Form 2416.

a. Forms, records, and reports required for calibration personnel at all levels are prescribed by TM 38-750. DA Form 2416 must be annotated

SECTION I

in accordance with TM 38-750 for each calibration performed.

b. Adjustments to be reported on DA Form 2416 are designated (R) at the end of the sentence in which they appear. When adjustments are in tables, the (R) will follow the designated adjustment. Report only those adjustments made and designated with (R).

3. Reporting of Errors

The reporting of errors, omissions, and recommendations for improving this publication by the individual user is encouraged. Reports should be submitted on DA Form 2028, Recommended Changes to Publications, and forwarded direct to Commander, U.S. Army Missile Command, ATTN: AMSMI-MFPA, Redstone Arsenal, AL 35809.

4. Calibration Description

TI parameters and performance specifications which pertain to this calibration are listed in table 1.

Table 1. Calibration Description

Test Instrument Parameters Performance Specifications

Power input requirements 115 vac ±10% (or 230 vac +10%), 50 to 60 Hz, 200 w Calibrator:

Output 6.05 to 100 v p-p in 11 steps Accuracy Waveform

±3% Square waves at approx 1 kHz

Vertical deflection system: Deflection factor 0.01 to 50 v/cm p-p in 12 steps; 0.1 to 50 v/cm dc coupled

and 0.01 v/cm to 50 v/cm ac coupled.

Accuracy

±3%

Frequency response Dc to 10 MHz; 0.1 to 50 v/cm, dc coupled; 2 Hz to 10 MHz,

0.1 to 50 v/cm, ac coupled; 2 Hz to 9 MHz, 0.01 to 0.05 v/cm, ac coupled.

1 megohm, 38 pf, direct connection

Input impedance

Rise time 35 nsec

TB 9-6625-1172-35

Horizontal deflection system:

Deflection factor

Approx 1.3 v/cm Frequency response Dc to 500 kHz Sweep speeds:

Time base

0.2 µAsec/cm to 2 sec/cm, in 22 steps; 5X magnifier extends fastest sweep rate to 0.04 µsec/cm.

This specification Is for information only and is not verified in this bulletin.

SECTION II

EQUIPMENT REQUIREMENTS FOR OSCILLOSCOPE,

TEKTRONIX TYPES 317 and RM17

(A-LEVEL)

5. Equipment Required

listed in table 2 provide a four-to-one ratio between the standard and TI. Where the four-to-one ratio cannot be

Table 2 identifies the specified equipment used for A-

level calibration. This equipment is issued with the

met, the actual accuracy of the equipment selected is

shown in parenthesis. secondary transfer calibration standards set and is to be used in performing this procedure. Alternate items may

6. Accessories Required be used by the calibrating activity when the equipment listed in table 2 is not available. The items selected must be verified to perform satisfactorily prior to use and must bear evidence of current calibration. The equipment must meet or exceed the minimum use specifications listed in table 2. The accuracies

The accessories listed in table 3 are issued with the secondary transfer calibration standards set and are to be used for A-level calibration. When necessary, these items may be substituted by equivalent items unless specifically prohibited.

TB 9-6625-1172-35

Table 2. Minimum Specifications of Equipment Required

Item Common Name Minimum Use Specifications Manufacturer, Model, and Part Number

A1 AC CALIBRATOR Range: 13.7158 my rms to Hewlett-Packard, Model

72.826 v rms at 1 kHz. 745A (MIS-10342).

Accuracy: ±0.75%

A2 AC/DC VOLTMETER Range: -153 to +309 vdc Dana, Model 5703-S-2127

(7912606).

Accuracy: ±0.75%

A3 AUTOTRANSFORMER Range: 105 to 125 vac General Radio, Model

W10MT3AS3 (7910809).

Accuracy: ±0.75%

A4 DC VOLTMETER Range: -1261 to -1339 vdc Electrical Instruments Ser-

vice, Model ESV (MIS-10276).

Accuracy: ±0.75%

A5 SQUARE-WAVE Range: 50 Hz to 1 MHz Tektronix, Type 106

GENERATOR. (MIS-10284).

Rise Time: Less than 35 nsec

A6 TIME-MARK GENERATOR Range: 20 nsec to 1 sec Tektronix, Type 184MOD

markers. 146B (7912042-2).

Accuracy: ±0.75%

Table 3. Accessories Required

Item Common Name Description and Part Number

B1 ADAPTER BNC plug to double banana posts (7909401) B2 ADAPTER BNC jack to UHF plug (10519439) B3 ADAPTER UHF jack to BNC plug (8109698) B4 CABLE 36-in., RG-580/U; BNC plug and double banana plug termina-

tions (7907471). B5 CABLE 30-in., RG-580/U; BNC plug terminations (7907467) B6 CAPACITANCE 5 to 80 pf, variable (SKD-4850-44)

STANDARDIZER.

B7 LEAD 24-in., No. 18 AWG; single banana plug terminations (red)

(7907497).

B8 LEAD 24-in., No. 18 AWG; single banana plug terminations (black)

(7907498).

B9 PROBE Test hook, banana plug to miniature hook (SKC-4850-14)

SECTION III

PRELIMINARY OPERATIONS FOR OSCILLOSCOPE,

TEKTRONIX TYPES 317 AND RM17 (A-LEVEL)

TB 9-6625-1172-35

7. Preliminary Instructions

a. The instructions outlined in this section are preparatory to the calibration process. Personnel should become familiar with the appropriate sections before beginning the calibration.

b. Items of equipment used in this procedure are referenced within the text by common name and item identification number as listed in tables 2 and 3. For the identification of equipment referenced by item numbers prefixed with A, see table 2, and for prefix B, see table 3.

WARNING

HIGH VOLTAGE is used during the performance of this calibration. DEATH ON CONTACT may result if personnel fail to observe safety precautions.

8. Equipment Setup

a. Remove protective cover from TI.

b. Connect TI to autotransformer (A3).

c. Connect autotransformer to 115-volt

SECTION IV

ac source and adjust controls for 115 volts ac.

d. Position TI controls as listed in (1) through (15)

below:

(1) INTENSITY control to midrange. (2) FOCUS control to midrange. (3) CALIBRATOR switch to OFF. (4) HORIZONTAL DISPLAY switch to NORM. (5) TRIGGER SELECTOR switch (black) to

+INT.

(6) TRIGGER SELECTOR switch (red) to

AUTO.

(7) TRIGGERING LEVEL control to 0 (zero). (8) STABILITY control fully clockwise. (9) TIME/DIV switch to .1 MILLISEC.

(10) VARIABLE TIME/DIV control to

CALIBRATED.

(11) VERTICAL POSITIONING control to

midrange.

(12) HORIZONTAL POSITIONING control to

midrange.

(13) VOLTS/DIV switch to .1. (14) VARIABLE VOLTS/DIV control to

CALIBRATED.

(15) AC DC switch to AC.

e. Turn POWER switch to ON and allow sufficient

time for equipment to warm up and stabilize.

NOTE

Unless otherwise specified, verify the results of each test and take corrective action whenever the test requirement is not met before continuing with the calibration.

NOTE

When indications specified in paragraphs 9 through 19 are not within tolerance, perform the power supply check prior to making adjustments. After adjustments are made, repeat paragraphs 9 through 19, Do not perform power supply check if all other parameters are within tolerance.

9. Crt Mechanical Alinement

a. Performance Check

(1) Position TI controls as listed in (a) through

(a) SCALE ILLUM control as desired.

CALIBRATION PROCESS FOR OSCILLOSCOPE,

TEKTRONIX TYPES 317 AND RM17 (A-LEVEL)

(b) INTENSITY and FOCUS controls for

sharp trace.

for start of trace at left edge of graticule.

(2) Adjust VERTICAL POSITION control for start of trace alined with center horizontal graticule line. If end of trace is not within M small division of center horizontal graticule line, perform b below.

b. Adjustments

WARNING

HIGH VOLTAGE is present in area of crt base; use extreme caution when making the following adjustments.

(1) Loosen crt base clamp and rotate crt with positioning handle for indication as specified in a(2) above.

(2) Tighten crt base clamp and repeat a(2) above.

TB 9-6625-1172-35

10. Crt Geometry and Astigmatism fig. 2) until markers are parallel with vertical graticule

a. Performance Check

(1) Connect time-mark generator (A6) to TI VERTICAL INPUT, using cable (B5) and if necessary, adapter (B2). Adjust time-mark generator for .1 mS marker output.

(3) Reposition TI waveform to display both the baseline and markers. If sharp focus of crt display cannot be obtained by adjusting front panel FOCUS control, perform b(2) below.

b. Adjustments

Table 4. Calibrator Accuracy

Test Instrument Ac/Dc Voltmeter Indications

VOLTS PEAK-TO-PEAK

Switch Settings. Min Max

line.

in conjunction with FOCUS control for sharpest focus of displayed baseline and markers.

11. Calibrator Accuracy

position) and remove V875 (fig. 3), or for TI's with SIN 280 and above V883 (fig. 3) (V573, fig. 4).

CAL OUT connector and chassis ground, using leads supplied with ac/dc voltmeter and, if necessary, adapter (B1).

(1) Adjust R861 (fig. 1) (GEOM ADJ R861,

(2) Adjust R860 (fig. 1) (ASTIG R856, fig. 2)

a. Performance Check

(1) Turn TI POWER switch to off (down

(2) Turn TI POWER switch to ON. (3) Connect ac/dc voltmeter (A2) between TI

(vdc).

50 48.5 51.5 20 19.4 20.6 10 9.7 10.3 5 4.85 5.15 2 1.94 2.06 1 0.97 1.03 .5 0.485 0.515 .2 0.194 0.206 .1 0.097 0.103 .05 0.0485 0.0515

(4) Turn TI VOLTS PEAK-TO-PEAK switch to

100. If ac/dc voltmeter does not indicate between 97 and 103 volts dc, perform b below.

(5) Repeat technique of (4) above for settings and indications listed in table 4. Ac/dc voltmeter will indicate within limits specified.

(6) Turn TI POWER switch to off (down) and

replace vacuum tube removed in (1) above.

(7) Turn TI POWER switch to ON and VOLTS

PEAK-TO-PEAK switch to OFF.

b. Adjustments. Adjust CAL ADJ R879 (fig. 3) (CAL. ADJ. R566, fig. 4) for a 100-volt de indication on ac/dc voltmeter (R).

TB 9-6625-1172-35

Figure 1. Oscilloscope-bottom view (type RM17).

12. Vertical Dc Balance

a. Performance Check

(1) Connect TI VERTICAL INPUT to chassis

ground, using lead (B 7), and if necessary, adapter (B1).

(2) Position TI controls as listed in (a) through

(a) AC/DC switch to DC.

(b) STABILITY control fully clockwise.

aline trace behind horizontal graticule center line.

(3) Turn VARIABLE VOLTS/DIV control from

fully clockwise to fully counterclockwise

TB 9-6625-1172-35

Figure 2. Oscilloscope - top view (type 317).

position. If trace does not remain behind center horizontal graticule line, perform b below.

b. Adjustments. Adjust VARIABLE ATTEN. BAL. (front panel) for minimum vertical movement of trace while turning VARIABLE VOLTS/DIV control throughout its range.

13. Vertical Amplifier and Preamplifier Gain, Attenuation. and Stability

a. Performance Check

(1) Connect ac calibrator (Al) output to TI VERTICAL INPUT, using cable (B4) and, if necessary, adapter (B2).

(2) Turn TIME/DIV switch to 1 mSEC and VARIABLE VOLTS/DIV switch to CALIBRATED.

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