HP 3326A User Manual

HEWLETT

PACKARD

CERTIFICATION

Hewlett-Packard Company certifies that this product met its published specifications at the time of shipment from the factory. Hewlett-Packard further certifies that its calibration measurements are traceable to the United States National Bureau of Standards, to the extent allowed by the Bureau's calibration facility, and to the calibration facilities of other International Standards Organization members.

WARRANTY

This Hewlett-Packard product is warranted against defects in material and workmanship for a period of one year from date of shipment. During the warranty period, Hewlett-Packard Company will, at its option, either repair or replace products which prove to be defective.

For warranty service or repair, this product must be returned to a service facility designated by shall prepay shipping charges to -hp- and -hp- shall pay shipping charges to return the product to Buyer. However,

Buyer shall pay all shipping charges, duties, and taxes for products returned to

HP software and firmware products which are designated by HP for use with a hardware product, when properly installed on that hardware product, are warranted not to fail to execute their programming instructions due to defects in materials and workmanship. If HP receives notice of such defects during their warranty period, HP shall repair or replace software media and firmware which do not execute their programming instructions due to such defects. HP does not warrant that the operation of the software, firmware or hardware shall be uninterrupted or error free.

LIMITATION OF WARRANTY

The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by

Buyer, Buyer-supplied software or interfacing, unauthorized modification or misuse, operation outside of the environmental specifications for the product, or improper site preparation or maintenance.

NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HEWLETT-PACKARD SPECIFICALLY DISCLAIMS THE

IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

EXCLUSIVE REMEDIES

THE REMEDIES PROVIDED HEREIN ARE BUYER'S SOLE AND EXCLUSIVE REMEDIES. HEWLETT-PACKARD SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL

DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER

-hp- from another country.

LEGAL THEORY.

-hp-. Buyer

ASSISTANCE

Product maintenance agreements and other customer assistance agreements are available for Hewlett-Packard products.

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

Reproduced With Permission Courtesy Agilent Technologies, Inc.

HEWLETT PACKARD

SAFETY SUMMARY

The following general safety precautions must be observed during all phases of operation, service, and repair of this instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. Hewlett-Packard Company assumes no liability for the customer's failure to comply with these requirements. This is a Safety Class

instrument.

GROUND THE INSTRUMENT To minimize shock hazard, the instrument chassis and cabinet must be connected to an electrical ground.

The instrument is equipped with a three conductor ac power cable. The power cable must either be plugged

into an approved three-contact electrical outlet or used with a three-contact to two-contact adapter with the grounding wire (green) firmly connected to an electrical ground (safety ground) at the power outlet. The power

(lEC)

jack and mating plug of the power cable meet International Electrotechnical Commission

DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE Do not operate the instrument in the presence of flammable gases or fumes. Operation of any electrical instru-

ment in such an environment constitutes a definite safetv hazard.

safety standards.

KEEP AWAY FROM LIVE CIRCUITS

Operating personnel must not remove instrument covers. Component replacement and internal adjustments

must be made by qualified maintenance personnel. Do not replace components with power cable connected. Under certain conditions, dangerous voltages may exist even with the power cable removed. To avoid injuries, always disconnect power and discharge circuits before touching them.

DO NOT SERVICE OR ADJUST ALONE Do not attempt internal service or adjustment unless another person, capable of rendering first aid and resus-

citation, is present.

DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT Because of the danger of introducing additional hazards, do not install substitute parts or perform any unautho-

rized modification to the instrument. Return the instrument to a Hewlett-Packard Sales and Service Office for service and repair to ensure that safety features are maintained.

DANGEROUS PROCEDURE WARNINGS Warnings, such as the example below, precede potentially dangerous procedures throughout this manual. Instruc-

tions contained in the warnings must be followed.

Dangerous voltages, capable of causing death, are present in this instrument. Use extreme caution when handling, testing, and adjusting.

SAFETY SYMBOLS

General Definitions of Safety Symbols Used On Equipment or In Manuals.

Instruction manual symbol: the product will be marked with this symbol when it is necessary for the user to refer to the instruction manual in order to protect against damage to the instrument.

Indicates dangerous voltage (terminals fed from the interior by vol-

1000

tage exceeding

Protective conductor terminal. For protection against electrical shock in case of a fault. Used with field wiring terminals to indicate the terminal which must be connected to ground before operating equipment.

Low-noise or noiseless, clean ground (earth) terminal. Used for a signal common, as well as providing protection against electrical shock in case of a fault. A terminal marked with this symbol must be connected to ground in the manner described in the installation (operat-

ing) manual, and before operating the equipment.

volts must be so marked).

WARNING

NOTE

Frame or chassis terminal. A connection to the frame (chassis) of the equipment which normally includes all exposed metal structures.

Alternating current (power line).

Direct current (power line).

Alternating or direct current (power line)

The WARNING sign denotes a hazard. It calls attention to a procedure, practice, condition or the like, which, if not correctly performed

or adhered to, could result in injury or death to personnel.

The CAUTION sign denotes a hazard. It calls attention to an operat-

ing procedure, practice, condition or the like, which, if not correctly

performed or adhered to, could result in damage to or destruction of part or all of the product.

The NOTE sign denotes important information. It calls attention to

procedure, practice, condition or the like, which is essential to

highlight.

TABLE

OF CONTENTS

HP 3326A TURN ON AND WARM UP CH A AND CH B OUTPUTS SELECTING AN OPERATING MODE SELECTING THE OUTPUT FUNCTION

DATA ENTRY AND MODIFICATION THE ENTRY KEYS LINEAR FREQUENCY SWEEP DISCRETE FREQUENCY SWEEP MODULATION SAVING CALIBRATION AND SELF TEST HP-IB STATUS KEYS EXTERNAL TRIGGER MARKER SYNC A OUTPUT 20-33 MHz L.O. OUTPUT (EXTENDED FREQUENCY) PHASE LOCK TO EXT REFIOVEN STABILIZED FREQUENCY OPTION

Chapter

DESCRIPTION OF THE HP-IB HP 3326A HP-IB CAPABILITY HP-IB INTERFACE MANAGEMENT LINES TALK VIEWING THE HP 3326A HP-IB ADDRESS CHANGING THE HP 3326A HP-IB ADDRESS BUS MESSAGES SERVICE REQUEST THE STATUS BYTE MASKING THE STATUS BYTE

RECALLING AN INSTRUMENT STATE. AND MEMORY OPERATIONS 1-50

Z-BLANK (PEN LIFT) 1 X-DRIVE OUTPUTS

HP-IB

LISTEN ADDRESSES

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

INDICATORS / CONNECTOR

Operation

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

, , ,

.... .......

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

.......

. . . . .

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

...

. . . . ... ...

... . . ...

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

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

. . .......

. .

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

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

....... . .

. .

.....

. . ....

...

.......

. . .

1-2 1-5

1-6 1-12 1-14 1-20 1-29 1-39 1-44

1-53 1-57

1-59 1-59 1-63 1-64

1-66

2-1 2-2 2-2 2-2 2-4 2-4 2-4 2-6 2-7 2-8

Chapter

3326A

REMOTE FRONT PANEL OPERATION COMMAND SYNTAX BUS MODES VIEWING THE HP 3326A HP-IB ADDRESS CHANGING THE HP 3326A HP-IB ADDRESS INTERROGATING THE HP 3326A FOR SETUP PARAMETERS DISPLAYING THE HP 3326A SETUP PARAMETERS MODIFYING PARAMETERS DISPLAY CONTROL SAVING OR RESTORING AN HP 3326A SETUP HP 3326A IDENTIFICATION TRIGGERED SWEEPS READING AND MASKING THE STATUS BYTE ERROR CODES HP 3325A COMPATIBILITY UNITS HP 3326A MNEMONICS SUMMARIES

HP-IB

Commands

.... . . ...

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

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

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

. . ...

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

....

. . ....

........

.....

........ . .

.... . . . .

. . . . .....

...........

....

......

. . ....

....

...

Appendices

APPENDIX A A 1 APPENDIX APPENDIX C lns~de Rear Cover

3-1 3-1 3-3 3-3 3-4 3-4

....

3-4 3-5 3-6 3-6 3-7

3-10 3-1 2 3-13 3-13

3-8

CHAPTER

OPERATION AND REFERENCE

Chapter

Table of Contents

HP 3326A TURN ON AND WARM UP CH A AND CH B OUTPUTS

SELECTING

OPERATING MODE

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

SELECTING THE OUTPUT FUNCTION DATA ENTRY AND MODIFICATION THE ENTRY KEYS 1-20 LINEAR FREQUENCY SWEEP

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

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

DISCRETE FREQUENCY SWEEP 1-39 MODULATION SAVING

AND

MEMORY OPERATIONS CALIBRATION AND SELF TEST HP-IB STATUS KEYS EXTERNAL TRIGGER MARKER SYNC A OUTPUT 1.63

20-33

MHz

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

RECALLING AN INSTRUMENT STATE,

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

INDICATORS I CONNECTOR

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

Z-BLANK (PEN LIFT) I X-DRIVE OUTPUTS

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

L.O.

OUTPUT (EXTENDED FREQUENCY)

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

1.2 1-5

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

1-6 1-12 1-14

1-29

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

1-44

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

1.50

1.53

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

1.57

1.59

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

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

1-59

1-64

PHASE LOCK TO EXT REFIOVEN STABILIZED

FREQUENCY OPTION 1-66

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

Qservice ----- This Document is a complete scan from the Original HP - Agilent Manual ----- Qservice

Turn

on and Warm

HP 3326A TURN

Turn On and Power

Connect the HP 3326A to a suitable power source and depress the POWER switch to

POWER

apply power to the entire HP 3326A. When power is applied, the HP 3326A initially displays "HP 3326A" followed by a list of the options installed. The HP 3326A then initiates a series of self tests and calibrates internal circuits. During a self test, all indicators (except the EXT REF indicator) and display segments are illuminated then extinguished, and a series of internal tests are initiated. After each internal test, PASS

FAIL followed by a test number is displayed to indicate the test results. During a

or self test, the outputs are disabled.

AND WARM UP

Self

Tests

When power is removed from the HP 3326A with the POWER key, the frequency reference circuits (Option 001) to maintain frequency accuracy.

Turn On State

The initial state of the HP 3326A at power up is dependent upon the setting of internal

the setup state selected prior to removing power can be selected as the turn on state.

Warm

An HP 3326A without the high stability frequency reference (Option 001) requires 30

3326A is

in a standby condition. In the standby condition, power is applied to the high stability

switches. The normal turn on state is the preset state described in "The Preset State and the INSTR PRESET Key". However, through the use of the internal SAVE switch,

Setting of internal switches must be done by qualified service personnel. The location and settings of the SAVE switch are described in the HP

minutes of operation to meet all specifications. An HP 3326A with Option 001 requires

minutes of operation to meet frequency specifications if power is disconnected for

less than 24 hours. If power is disconnected from the HP 3326A with Option 001 for

3326A Service Manual.

Turn

and Warm up

more than 24 hours, up to 72 hours of operation may be required to meet frequency

001

specifications. The HP 3326A with Option

requires 30 minutes of operation to meet

other specifications.

NOTE

When power is removed from the HP the POWER key, the dition. In the standby condition, power is applied to the high stability frequency reference circuits

(Option

The Preset State and the lnstr Preset Key

INSTR

PRESET

The preset state of the HP 3326A is listed in Figure the preset state by pressing the green INSTR PRESET (INSTRument PRESET) key. INSTR

PRESET provides a convenient starting state for establishing an instrument setup. INSTR PRESET does not destroy instrument states or discrete frequency sweep elements stored in the internal nonvolatile memory.

3326A

to maintain frequency accuracy.

is in a standby con-

1-1.

The HP 3326A is restored to

with

HP-IB

Example:

"RST"

Turn on and Warm

CH A and

B Outputs

CH A AND

OUTPUTS

CH A and CH B Output Connectors

The CH A (channel on the front panel. Option 003, Rear Panel Main Signal Outputs, replaces the front panel

channel The channel

tive output for combined and internal modulation operation. For combined and internal modulation operation, the channel B output is is used internally and is unavailable at the CH B connector.

and B outputs with rear panel outputs.

and CH B (channel B) output connectors are normally located

connector, in addition to being the output for channel

is also the ac-

The output impedance is 50 20 dB over the range of 100 kHz to 13 MHz. The output impedance with the high voltage option enabled is less than 2 of 50 kHz to 1 MHz. Both outputs share the same ground and may be floated up to

42 volts peak.

The maximum peak voltage lac + dc) that can be safely applied between chassis and the outer conductor of the

tors is

from 0 to 100 kHz, with a return loss of greater than

from 0 to 50 kHz, and less than 10 D over the range

3326A

volts peak.

input and output connec-

Setup For Viewing Output

Figure 1-2 illustrates a simple setup to view the HP 3326A outputs and observe the

effects of changing the HP 3326A settings. For example purposes, the selection of an oscilloscope displaying both channels simultaneously.

Waveforms

not critical although a dual channel oscilloscope has the advantage of

SELECTING AN OPERATING MODE

The

Mode

Key

The MODE key selects the operating mode of the HP 332614. Each time the MODE key

is pressed, the operating mode sequences through the

and PULSE operating modes, The mode selected is indicated by the illuminated indicator. COMBINED operation is enabled by pressing the blue SHIFT key prior to the MODE

key. The operating modes affect operating limits, operating characteristics, and selec-

tion of the CH A and CH

limits are included in the applicable sections for the characteristics and limits. When

the 2 PHASE or PULSE mode is selected, the HP 3326A performs an internal phase calibration. During a mode change, the channel

outputs. The effects on the operating characteristics and

CHANNEL, 2 PHASE, 2 TONE,

and B outputs are disabled.

Channel

Mode

STEP

In the 2 CHANNEL

mode, the

3326A

operates as two independent synthesizers. Sweep parameters, frequency, amplitude, dc offset, external modulation, sine wave output, and square wave output is independent for each channel. With internal modulation

enabled, the channel thesizer. Figure

HP-18

Examples:

1-3

synthesizer is used to internally modulate the channel A syn-

illustrates the effect of changing frequency in the 2 CHANNEL

"MODE1"

"MODE TWOC"

mode.

STEP

Selectmg

Phase

Operating

Mode

STEP

In the 2 PHASE

1-4).

The phase offset of channel B with respect to channel A remains constant as fre-

mode, both channel A and B frequencies are the same (see Figure

quency is changed. Amplitude, dc offset, external amplitude modulation, sine wave output, and square wave output is independent for each channel,

HP-18

Examples:

"MODE

TWOP"

STEP

Selectmg an Operating

Mode

In the 2 TONE mode, the channel B frequency tracks changes to the channel A fre-

1-5).

quency (see Figure

channel

is 100 kHz. Amplitude, dc offset, external amplitude modulation, sine wave

The maximum frequency difference between channel A and

output, and square wave output are independent for each channel.

HP-IB

Examples:

"MODE3" or "MODE TWOT"

STEP

ating

Mode

Pulse

,-*-m,s

Mode

---,*

STEP

In the

PULSE

nel A square wave output (see Figure

mode, the channel B square wave output

1-6).

modulat~on are independent for each channel

HP-IB

Examples:

"MODE$"

"MODE

PULS"

the complement of the chan-

Amplitude, dc offset, and external amplitude

STEP

Combined Operation

With COMBINED operation, the channel B output is diverted and summed with the channel A output (see Figure of each channel by be entered if DC is selected as the function, however, when alternate functions (OFF, sine wave, or square wave) are selected, the DC offset level is returned to zero. Note that the peak-to-peak amplitude of the output signal is a function of the phase, frequency! and amplitude of each channel. COMBINED operation is selectable only in the

NEL,

modulation.

HP-IS

Examples:

1-7).

COMBINED operation reduces the amplitude output limit

50%

(6.02 dB) and sets the dc offset level to zero. DC offsets can

CHAN-

PHASE, and 2 TONE MODES. COMBINED operation is disabled for internal

STEP

"CMBI

or "CMB ON"

STEP

Selecting the Output Function

SELECTING THE OUTPUT FUNCTION

The

Off,

and

Keys

The CH A and CH B keys select the output waveform for the channel A and channel

outputs, respectively. Each time the CH A or CH B key is pressed, the output waveform sequences through the OFF, The selected output is indicated by an illuminated indicator. If the pulse mode is selected, the sine wave and DC only output is removed from the output waveform selection sequence. The blue high voltage (HV) legends printed below these keys are active only if the high voltage option (Option

TI,

and

Indicators

When all function indicators are extinguished, the output channel is disabled.

HP-16 Examples:

FCNAO" or "FCNA OFF" "FCNBO" or "FCNB OFF"

The mode is selected, the sine wave output is removed from the output waveform selection sequence.

(sine wave) indicator illuminates when a sine wave output is enabled. If the pulse

(sine wave), % (square wave), and DC outputs.

002)

is installed.

HP-I6 Examples:

"FCNA1"

"FCNA SIN" "FCNB

"FCNB SIN"

HP-18

Examples:

FCNA2"

Selectmg the

Output

Function

"FCNA SQR"

"FCNB

2" or "FCNB

SQR"

The DC indicator illuminates when a dc only output is enabled. With dc only, the ac portion of the output is suppressed. The output amplitude for the DC function is controlled by the value entered for the DC OFFSET key.

The

HP-18

Examples:

High

Voltage Option (Option

The HV (high voltage) key enables or disables the high voltage output option. The HV key is available by pressing the blue key.

HV indicator, to the left of the display, illuminates when a high voltage output is enabled. The high voltage option increase the available output voltage range by a factor of four with a maximum value of option reduces the maximum output frequency to

impedance. The output signal is momentarily set at zero volts if internal attenuator set-

tings change.

"FCNAS"

"FCNA DC" "FCNBS"

"FCNB

DC"

002)

SHIFT

The channel B high voltage option is disabled if the

channel

quency must be reduced below

high voltage option can be enabled.

frequency is greater than

3326A

mode is changed. The channel B fre-

key prior to pressing the CH A or CH

volts peak-to-peak. Enabling the high voltage

MHz, and decreases the output

WTE

MHz

and the

MHz

before the

HP-IB

Examples:

"HVAI

"HVBI

or or

"HVA ON" "HVB ON"

Data Entry and Modification

DATA ENTRY AND MODIFICATION

Selecting the Channel for Modification

Prior to entering data to specify the HP 3326A output, it is necessary to select the chan-

nel to be modified with the CHAN key to the left of the display window. The channel currently selected is indicated by the illuminated CH A or CH CHAN key. The CHAN key selects the alternate channel for display and modification each time the CHAN key is pressed.

HP-IB

Examples:

"CHA" "CHB"

The Data Keys

Entering setup values with the numeric keypad is a simple three step process. Select a parameter to change, enter the desired value (most significant digit first), and end the entry with a units key. For example, to change the output amplitude to 1 Vrms, press the AMPTD (amplitude) key and display the current amplitude value. Press the 1 key

in the numeric keypad, and press the kHz Vrms mSEC units key to end the entry (see

Figure 1-9). Notice that the Vrms units from the kHz Vrms to the data value. The HP 3326A assigns the units to the data value that corresponds to parameter being changed. If the entered value exceeds the HP 3326A range limits, the entered value is ignored and an error message is displayed. To cancel an incom-

plete data entry, press any key that requires the display for data entry (see Figure

lists the keys that accept numeric data.

indicator next to the

mSEC units key are assigned

1-8).

Data

Entry

and Modif~cation

The value in the display window is edited during data entry with the BACK SPACE key.

Each time the BACK SPACE key is pressed, the least significant digit or decimal point is removed from the display. After the incorrect digits are removed from the display

1-9

value, data entry can continue with the numeric keypad and units keys. Figure

illus-

trates the use of the BACK SPACE key.

Figure

1-9.

Data

Entry

Example

Data Entry and Modification

Error

Messages

If an attempt is made to enter or modify operating parameters beyond the capabilities, the new input is ignored and an error message and code is displayed. Figure

1-1

messages and codes is included

LOCK 12 (local LOCKout) The LOCAL key is pressed while the

NTR 40, 46, 47

SUFX 60, 65

3326A

lists the error messages and explanations of the errors. A complete list of the error

Appendix A.

HP 3326A

(INTeRrogate) The value of the functron requested cannot be displayed because of the mode, modulation, channel, or sweep selected.

(SUFfiX) The units key selected is improper for the function selected

local lockout

AMPL 80 (AMPLltude) Combined operation is selected and the cur-

rept amolitude is too larae

MODE 87 (MODE) The requested value or function is incompatible

with the mode selected.

CMBR 89 (CoMBineR) The requested value or function is incompat-

ible with combined operation.

DUTY

DSWP

110,

114

(DUTY cycle) The duty cycle of a PULSE a sweeo.

(Discrete frequency SWeeP) The d~screte frequency sweep

invalid because of mode selected or the lack of

sweeD elements.

too narrow

for

Data Entry and Modification

DSHV

DSML

DSMD 117 (Discrete Sweep

115

116

123

130, 136,

CRPT

160

(Discrete Sweep High Voltage) The high voltage option is enabled and a discrete frequency element frequency ex-

ceeds (Discrete Sweep ModuLation) Tee chanqel B frequency

exceeds ihe kHz internal AV lrmit dcirir,g a discrete frequency sweep.

ments in memory are incom~atible with the mode selected.

(Phase OFfset) Cannot cfear phase offset of channel A.

138 (High Voltage) The high voltage (HV) option cannot be ena-

bled because the output frequency 1s qreater than

(CoRruPT) An error is detected in an instrument state

recalled from memory. The instrument state is replaced

impedance for the channel

MHz.

OverLoad) The channel B output

kHz rnternal Pm limit or exceeds tne 100

MoDe) The discrete frequency sweep ele-

MHz,

overloaded The load

output is too low or a volt-

AVCO 173 (channel A Voltage Controlled Oscillator) The channel A

voltaqe controlled oscrllator is unlocked

sensed, but the HP

MCAL

PCAL 191 (Phase CALibration) A phase calibration is unsuccessful

ACA

OCAL

PASS

FA1

192

193-1 94

(Mod~lation CAL~Dration) An internal AM or is ~nsuccessful.

(Amplitude CALibration) An amplitude call~ration is

successfu!. (Offset CALibration) A self test is successfvl. A self test is unsuccessful.

3326A cannot lock to it

dc offset calibration

calibration

unsuccessful

un-

Data Entry and Mod~f~cation

Viewing Setup Parameters

The current value of a setup parameter is displayed when a front panel key that accepts entries from the keypad (such as the FREQ or AMPTD key) is pressed. Figure

1-8

lists the front panel keys that accept entries from the keypad. Selecting one of these keys does not alter the current setup values. An error message is displayed if the key pressed is inactive for the mode selected. Pressing the CHAN key alternates the display between the channel A and B values for the parameter selected.

Units Conversion

The units keys, in addition to ending data entry, can perform units conversion on dis-

played values. Pressing a units key converts the value to the equivalent value for the units key pressed. For example, if the display value is in units key converts the display value to dBV. Converting units does not alter the current setup. The message "Error

results in a zero display value that is inconsistent with the current value. For example, converting 0.000001 units conversion.

dBm, pressing the dBV

CNVT" (CoNVerT) is displayed if the conversion would

MHz

would erroneously display 0

MHz,

Figure 1-1 1 illustrates

O/O

Figure

1-1

Units Conversion

Modifying Entry Values with the Rotary Knob

The display value can be modified with the rotary knob and keys in the MODIFY control group (see Figure key. When the modify rotary knob is enabled, flashing digit is the least significant digit that is modified with the rotary knob. Turning the rotary knob clockwise increments the value of the display, while turning the rotary

knob counterclockwise decrements the value of the display. The rotary knob modifies the display value until the boundary limit is reached. The rotary knob (and flashing digit)

is disabled with the

with the rotary knob.

1-1

2).

The rotary knob is enabled with either the arrow keys or ONIOFF

ONIOFF key. Figure

single digit in the display flashes. The

1-1

lists the display values that are modified

Data

Entry

and Mod~fication

The display digit modified with the rotary knob

selected with the right arrow and left arrow keys. Pressing the right arrow key selects the next least significant digit for modification and pressing the left arrow key selects the next most significant digit for modification.

HP-IB

Examples:

"MFY1

"MFY

ON"

Figure

1-12.

Modifying Entries with the Rotary

Knob

---

The

Entry

Keys

THE ENTRY KEYS

Frequency

The FREQ (frequency) key enables display, entry or modification of the frequency of the channel selected with the CHAN key. The indicator above the FREQ key illuminates when the output frequency value is displayed. The displayed frequency value is chang-

ed with the numeric keypad and units keys, or modified with the MODIFY controls. The MHz, kHz, and Hz units allow convenient entry of frequency values. Frequency resolution is 1

pHz for frequencies beleow 100 kHz, and 1 mHz for 100 kHz and above. Frequency ranges are dependent upon selection of the operating mode and high voltage option (see Figure 1-14). During a frequency change the output is phase continuous; that is, there are no phase discontinuities in the output waveform.

NOTE

After a mode change, the channel B frequency set to the channel A frequency.

2 Channel Mode

Each channel frequency is set independently. The frequency range for each channel

to 13 MHz.

2 Phase or Pulse Mode

The frequency of both channels is set to the same value by a change in frequency of

either channel. The frequency range is

to 13 MHz.

2 Tone Mode

The channel B frequency tracks changes to the channel A frequency. The frequency

range of channel A is 100 kHz offset from channel

A frequency change forces the channel

to 13 MHz. The channel B frequency can have up to a

with a maximum frequency of 13.1 MHz. If a channel

frequency to less than zero, the channel

frequency is changed to a value equal to the channel A frequency plus the absolute

value of the offset. The negative channel

value is displayed, and the channel B out-

put frequency is the absolute value of the displayed value.

+ 116 hidden pages