Agilent E4431B Data Sheet

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Calibration Guide

Agilent Technologies

ESG Family Signal Generators

Serial Number Preﬁxes:

(Afﬁx Label Here)

Part No. E4400-90325

Printed in USA

July 2000

Supersedes April 2000

Acknowledgements

UNIX

is a registered trademark of the Open Group.

Windows

and MS Windows® are U.S. registered trademarks of Microsoft Corporation.

Windows NT

is a U.S. registered trademarks of Microsoft Corporation.

Contents

1. Equipment Required

Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2

2. Operation Veriﬁcation

Veriﬁcation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2

3. Service Software

Required Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2

Installing the ESG_B or ESG_APDP Service Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

Uninstalling the Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5

ESG Family Support Software Administration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6

Running the Service Support Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-20

4. Performance Tests

Support Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3

1. Internal FM Accuracy and Distortion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-9

2. Internal AM Accuracy and Distortion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-10

3. Phase Modulation Accuracy and Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-12

4. FM Frequency Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-13

5. AM Frequency Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-14

6. Phase Modulation Frequency Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-16

7. DCFM Frequency Offset Relative to CW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-17

8. Residual FM (ESG-A and ESG-D only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-18

9. Harmonic, Subharmonic, and Nonharmonic Spurious Signals. . . . . . . . . . . . . . . . . . . . .4-20

10. Power Level Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-21

11. Timebase Aging Rate (ESG-AP, ESG-DP or Option 1E5 only) . . . . . . . . . . . . . . . . . . . .4-24

12. Digital Modulation Level Accuracy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-27

13. Internal Digital Modulation Quality. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-28

14. Custom I/Q RF Modulation Quality (Option UN8 only) . . . . . . . . . . . . . . . . . . . . . . . . .4-29

15. I/Q Modulation Quality (Options UN3, UN4 & UN8) . . . . . . . . . . . . . . . . . . . . . . . . . . .4-31

16. Pulse Modulation On/Off Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-32

17. Burst Modulation On/Off Ratio (ESG-D only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-33

18. CDMA Adjacent Channel Power (Option UN5 only) . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-34

19. Alternate Timeslot Power Settling Time (Option UNA only) . . . . . . . . . . . . . . . . . . . . .4-35

20. Pulse Rise/Fall Time (Option 1E6 only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-36

21. Measuring Phase Noise and Residual FM

(ESG-AP and ESG-DP Series Signal Generators) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-37

22. Dual Arbitrary Waveform Generator Check (Option UND only) . . . . . . . . . . . . . . . . . .4-42

23. GSM Loopback BER Check (Option 300 only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-44

24. Frac-N Check (ESG-AP, ESG-DP only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-45

25. Sampler/YO Driver Check (ESG-AP, ESG-DP only). . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-45

Performance Test Records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-46

5. Adjustments

Adjustment Relationships . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2

Internal Reference Oscillator Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4

Analog Bus ADC Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-5

Pretune Calibration (ESG-AP and ESG-DP only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6

iii

Contents

Internal Source Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

VCO Bias Potentiometer Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

Lock Angle Potentiometer Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

KV versus Frequency Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

AM Audio Path Offset Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

Timebase DAC Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

FM Scale DAC Offset Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

FM Path Offset Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14

FM In-Band DAC Offset Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

FM Inverting Ampliﬁer Offset Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16

FM 1/2 Path Ratio Gain Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17

Modulation Source Relative Gain Compression Calibration . . . . . . . . . . . . . . . . . . . . . . . . 5-18

FM Out-of-Band Calibration (ESG-A and ESG-D only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19

FM Delay Potentiometer Adjustment (ESG-A and ESG-D only) . . . . . . . . . . . . . . . . . . . . .5-20

Wide Bandwidth Phase Modulation Calibration (ESG-A and ESG-D only) . . . . . . . . . . . . 5-21

FM/PM Out-of-Band Calibration (ESG-AP and ESG-DP only) . . . . . . . . . . . . . . . . . . . . . . 5-22

FM/PM YO Frequency Compensation Calibration (ESG-AP and ESG-DP only) . . . . . . . . 5-23

DCFM Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24

Low Frequency (LF) Output Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-25

External Input Peak Detector Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26

Burst Modulator Calibration (ESG-D only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27

Burst Audio Path Gain Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-28

Prelevel Calibration, Digital. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-29

Prelevel Calibration, Analog (ESG-A only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-30

Gain Adjust Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31

Low Noise Floor Gain Adjust (ESG-AP and ESG-DP only). . . . . . . . . . . . . . . . . . . . . . . . . .5-32

ALC Modulation Driver Bias Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-33

VBLO Mixer Bias Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-34

Power Level Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-35

Level Meter Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-38

ALC Modulation Flatness Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-39

AM Gain Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-40

I/Q Gain/Offset/Quadrature Calibration (ESG-D only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-41

I/Q Impairment Adjustment (ESG-D only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-42

Baseband Generator I/Q Gain and Offset Adjustment

(ESG-A and ESG-D Options UN3 and UN4 only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-43

6. Maintenance and Service

Preventive Maintenance Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Returning a Signal Generator for Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2

Sales and Service Ofﬁces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

7. Safety and Regulatory

Safety Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

Instrument Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

General Safety Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

Statement of Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

Electrostatic Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

Contents

Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-7

Assistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-8

Certiﬁcation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-9

Contents

ESG Family Signal Generators

1Equipment Required

This chapter contains a list of all the recommended equipment required to perform the performance tests and adjustments for the ESG Family Signal Generators.

Calibration Guide 1-1

Equipment Required ESG Family Signal Generators Required Equipment

• HP/Agilent 8563E Option E35 Spectrum Analyzer (No Substitution)

Required Equipment

• HP/Agilent 8902A Measuring

Receiver

Option 010

Capable of W-CDMA ACP measurements from 1.2 to 3.0 GHz

Option E35 Comprises:

FM accuracy: ±2% of reading ±1 digit AM accuracy: ±2% of reading ±1 digit Range: 250 kHz to 1300 MHz

Filters: 300 Hz high pass and 15 kHz and 3 kHz low pass

Detectors: Peak+

• HP/Agilent 54750A Digitizing

Oscilloscope

Bandwidth: 20 GHz

• HP/Agilent 54751/2A Oscilloscope

Plug-in

Two 20 GHz bandwidth channels

• HP/Agilent 54610B Digital

Oscilloscope

Bandwidth: 500 MHz

• HP/Agilent 5071A

Primary Frequency Standard

• HP/Agilent 8563E Option H35

Spectrum Analyzer

• HP/Agilent 8563E Option K35

Adjacent Channel Power Ratio Test Set for W-CDMA

NOTE HP/Agilent 8563E Option K37

combines the Option K35 test set with ﬁrmware ROM chips to upgrade existing HP/Agilent 8560 E-series analyzers.

• HP/Agilent 8563E Options 001, 007

Spectrum Analyzer

Frequency range: 100 kHz to 4000 MHz Relative level accuracy (harmonic and

spurious measurements) ±2 dB Displayed average noise level (1 Hz BW)

−110 dBm at 100 kHz,

−130 dBm at 1 to 10 MHz, and

−134 dBm at 0.01 to 4 GHz

Frequency: 10 MHz Stability: > 1×10

-10

/year

• HP/Agilent 8903B Options 051, 010

Audio Analyzer

Distortion accuracy: ±1 dB Residual distortion:

−80 dB at 80 kHz BW 30 kHz low pass ﬁlter

AC level accuracy: ±4%

• HP/Agilent 89441A Options AY7,

AYA, AY9, UFG or UTH, and AYH Vector Signal Analyzer

1,2

1 Hz digital resolution BW ﬁlter (required for power accuracy)

RF input VSWR: 1:1.5 External timebase input Second IF output

• HP/Agilent 8663A Signal Generator Frequency Range: 11.5 to 2500 MHz

Output level: +16 dBm Meets HP/Agilent 8663A

single-sideband phase noise speciﬁcations

(No Substitution)

1. Equipped with GPIB

2. Used only with ESG-D models

1-2 Calibration Guide

ESG Family Signal Generators Equipment Required

Required Equipment

• HP/Agilent 8904A Function

Generator

Frequency range (sinewave): 0 Hz to 600 kHz

AC Amplitude (sinewave only):

Range: 0 to 10 Vp-p into a 50Ω load Flatness (>630 mVp-p into 50Ω):

±0.1% (±0.009 dB), 0.1 Hz to 100 kHz

• HP/Agilent 53132A Option 050

Universal Counter

Frequency range: 4 GHz Resolution: 0.1 Hz External timebase input

• HP/Agilent 33120A Option 001

Arbitrary Waveform Generator

(2)

(No Substitution)

• HP/Agilent 438A Power Meter

Instrumentation accuracy: ±0.5% Power reference accuracy: 0.9%

• HP/Agilent 8482A Power Sensor Frequency range: 100 kHz to 4000 MHz Power range: −30 dBm to +13 dBm

Maximum SWR: 100 kHz to 300 kHz: 1:1.6, 300 kHz to 1 MHz: 1:1.12, 1 MHz to 2 GHz: 1:1.1, 2 GHz to 4 GHz: 1:1.3

Calibration factor accuracy (RSS): ≤ 1.6%

• HP/Agilent E3615A Power Supply Minimum Power: 15V

Minimum Current: 325 mA

• MD/MDC-174 Mixer Frequency range: 0.001 to 2.8 GHz

• HP/Agilent 3458A Digital

Multimeter

dc Volts: 0.1 to 100 V Input resistance: 10Ω to 1 KΩ

• HP/Agilent 8491A/B Option 006

Attenuator

Attenuation: 6 dB

• HP/Agilent 8491A/B Option 010

Attenuator

Attenuation: 10 dB

• HP/Agilent 8491A/B Option 020

Attenuator

Attenuation: 20 dB

• Personal Computer (included in HP/Agilent E5500A/B)

Running MS Windows® 3.1/95/98 or Windows NT®

• HP LaserJet 5L Printer MS Windows supported

• HP 82341C GPIB Interface Card

with SICL HP I/O Library Installed

(No Substitution)

• Agilent Technologies E4400-60073 Digital Test Card (No Substitution)

• HP/Agilent 8495G Programmable Step Attenuator

Attenuation: 0 to 70 dB Frequency range: dc to 4 GHz

• HP/Agilent 11713A Step Attenuator

Driver

• HP/Agilent E5500A/B Phase Noise Measurement System

2, 3

Frequency range: 0 to 4 GHz

• MD/MDC-164 Mixer Frequency range: 0.5 to 9 GHz

Calibration Guide 1-3

1. Equipped with GPIB

2. Includes Personal Computer

3. Required for ESG-AP/DP only

Equipment Required ESG Family Signal Generators Required Equipment

Low Noise Ampliﬁers for Power Level Accuracy Adjustment and Performance Test

The power level accuracy adjustment and performance test both use low noise ampliﬁers. They are required to maintain separation between a low-level signal and the signal analyzer noise ﬂoor. The following ampliﬁers meet the requirements of making this measurement.

A +15 Vdc external supply is required for each of the ampliﬁers. An HP/Agilent E3615A, 0 to 20 V power supply can power all recommended ampliﬁers simultaneously.

100 kHz to 10 MHz Low Noise Ampliﬁer

Critical Speciﬁcations

Frequency Range: 100 kHz to 10 MHz Noise Figure: 1.5 dB Gain: 50 dB 1 dB Compression Minimum: +5 dBm External Power Supply Required: +15 Vdc @ 25 mA

Possible Part Number and Supplier

Part Number: W50ATC Supplier: Advanced Control Components

20 Meridian Road Eatontown, NJ 07724

30 MHz to 2 GHz Low Noise Ampliﬁer

Conﬁguration

Two ampliﬁers are cascaded to obtain the necessary requirements. The speciﬁcations listed below are the combined speciﬁcations of the cascaded ampliﬁers.

Critical Speciﬁcations

Frequency Range: 10 MHz to 2 GHz Noise Figure: 1.8 dB Gain: > 56 dB 1 dB Compression Minimum: +10 dBm External Power Supply Required: +15 Vdc @ 300 mA

Possible Part Number and Supplier

Part Number: AFS3-00010300-18-5P-4 (2 required) Supplier: MITEQ Inc.

100 Davids Drive Hauppauge, NY 11788

1-4 Calibration Guide

ESG Family Signal Generators

2Operation Veriﬁcation

This chapter provides procedures that will either ensure that the signal generator is operating correctly or will help to point to problem areas if it is not. Operation veriﬁcation does not ensure performance to speciﬁcations, but should provide a level of conﬁdence that the signal generator is operating correctly within a minimum amount of time. Operation veriﬁcation is appropriate for incoming inspection, after repair when a full calibrated performance is not required, or whenever the integrity of the signal generator is in question.

Calibration Guide 2-1

Operation Veriﬁcation ESG Family Signal Generators Veriﬁcation Procedures

Veriﬁcation Procedures

Performthe following procedures in the order they are presented. The tables referenced by the tests are located in the back of the chapter where they can be copied easily.

1. Power On the Signal Generator on page 2-2

2. Check for Error Messages on page 2-3

3. Frequency Range and Accuracy Check on page 2-3

4. Power Level Accuracy Check on page 2-4

5. FM Accuracy Check on page 2-7

6. AM Accuracy Check on page 2-8

7. I/Q Modulation Check (ESG-D Only) on page 2-9

Equipment Required

• HP/Agilent 5350A Frequency Counter

• HP/Agilent 438A Power Meter

• HP/Agilent 8482A Power Sensor

• HP/Agilent 8563E Spectrum Analyzer

• HP/Agilent 8491A/B Option 006 Attenuator (6 dB)

• HP/Agilent 8491A/B Option 010 Attenuator (10 dB)

• HP/Agilent 8902A Measuring Receiver

1. Power On the Signal Generator

This procedure veriﬁes that the signal generator powers up and that the internal instrument check identiﬁes no errors. The internal check evaluates the correctness of operation and returns an error message if a problem is detected.

1. Turn power on to the signal generator by pressing the power switch. The green LED will light. Let the signal generator warm up for one hour.

NOTE For ESG-AP or ESG-DP signal generators, or those with Option 1E5, ERROR

514, Reference Oven Cold occurs whenever the signal generator is ﬁrst

connected to AC line power. The annunciator both turn on. The OVEN COLD annunciator automatically clears after approximately 5 minutes. The error queue cannot be cleared, however, until the OVEN COLD annunciator has turned off.

OVEN COLD annunciator and the ERR

2. Cycle the power to the signal generator. The green LED should again be lit and the signal generator will perform a check.

2-2 Calibration Guide

ESG Family Signal Generators Operation Veriﬁcation

Veriﬁcation Procedures

2. Check for Error Messages

1. When the display is lit, check to see if the ERR annunciator is turned on.

2. If the

Utility > Error Info > View Next Error Message. The ﬁrst error message in the queue will be

ERR annunciator is turned on, review the error messages in the queue by pressing

shown in the text area of the display. Refer to the error messages guide for information about the error message.

If there is more than one error message (each message will be designated as 1 of n), continue pressing the

View Next Error Message softkey until you have seen all of the

messages.

3. When you have resolved all of the error messages, press Clear Error Queue(s) to delete the messages. Cycle the power on the signal generator and then restart this procedure (Check for Error Messages) at step 1.

3. Frequency Range and Accuracy Check

Frequency range is tested by determining the frequency accuracy relative to the timebase at the frequency limits.

Connect the Test Equipment

Figure 2-1 Frequency Range and Accuracy Equipment Setup

Conﬁgure the Signal Generator

1. Preset the signal generator to normal (factory-deﬁned) preset conditions.

2. Press

3. For frequencies < 10 MHz: a. Press

b. Press RF On/Off. The RF ON annunciator is displayed.

Calibration Guide 2-3

Mod On/Off. The MOD OFF annunciator is displayed.

Amplitude. Enter 10 using the numeric keypad and press the dBm terminator

softkey.

Operation Veriﬁcation ESG Family Signal Generators Veriﬁcation Procedures

4. For frequencies ≥ 10 MHz: a. Press

Amplitude. Enter 0 using the numeric keypad and press the dBm terminator

softkey.

b. Check that the RF ON annunciator is displayed. If not, press RF On/Off.

Conﬁgure the Frequency Counter

1. For frequencies < 10 MHz use Input 2. Press 1MΩ.

2. For frequencies≥ 10 MHz and ≤ 500 MHz use Input 2. Press

3. For frequencies > 500 MHz use Input 1. Press

AUTO.

50Ω.

NOTE Set the gate time of > 5 seconds for maximum counter accuracy. Verify that

the counter is phase-locked to the 10 MHz external reference.

Measure the Frequency Accuracy

1. Set the signal generator to the frequencies shown in Table 2-1, “Frequency Accuracy,” on page 2-10 (to the maximum frequency of your signal generator).

2. Record the measured frequency in Table 2-1 and compare it to the corresponding limits.

4. Power Level Accuracy Check

Performing this check will provide a high level of conﬁdence that the signal generator’s power level circuitry is functioning correctly. This check does not test the signal generator to warranted speciﬁcations. Test points have been reduced and the limits are degraded in order to minimize measurement time and take into account a broad range of measurement uncertainties. To have the signal generator tested to warranted speciﬁcations, a complete power level accuracy performance test is required. If the complete performance test is needed and you are unable to perform it, contact your nearest Agilent Technologies service center for information concerning calibration.

Connect the Test Equipment for Setup 1

Figure 2-2 Power Level Accuracy Equipment Setup 1

2-4 Calibration Guide

ESG Family Signal Generators Operation Veriﬁcation

Veriﬁcation Procedures

Conﬁgure the Signal Generator

1. Preset the signal generator to normal (factory-deﬁned) preset conditions.

2. Press

Frequency. Enter 277 using the numeric keypad and press the kHz terminator

softkey.

3. Press Amplitude. Enter 13 using the numeric keypad and press the dBm terminator softkey.

4. Press Mod On/Off. The MOD OFF annunciator is displayed.

5. Press

RF On/Off. The RF ON annunciator is displayed.

Conﬁgure the Power Meter

1. Zero and calibrate the power meter to the sensor’s reference calibration factor.

2. Set the power meter to measure absolute log power (dBm).

Measure the Power Level Accuracy

1. Set the power levels and frequencies for the signal generator (to the maximum frequency of your signal generator). Refer to the appropriate table in the following list:

• Table 2-2, “Power Level Accuracy Setup 1 (Signal Generators without Option 1E6),”

on page 2-11

• Table 2-3, “Power Level Accuracy Setup 1 (Signal Generators with Option 1E6),” on

page 2-13.

2. Set the power sensor’s calibration factor for each frequency.

3. Record the measured power level in the appropriate table (Table 2-2 or Table 2-3) and compare it to the corresponding limits.

Connect the Test Equipment for Setup 2

Figure 2-3 Power Level Accuracy Equipment Setup 2

Calibration Guide 2-5

Operation Veriﬁcation ESG Family Signal Generators Veriﬁcation Procedures

Conﬁgure the Signal Generator

1. Press Frequency. Enter 277 using the numeric keypad and press the kHz terminator softkey.

2. Press Amplitude. Enter −15 using the numeric keypad and press the dBm terminator softkey.

Conﬁgure the Spectrum Analyzer

1. Preset the spectrum analyzer.

2. Set the analyzer to external 10 MHz reference.

3. Set the center frequency to 277 kHz.

4. Set the frequency span to 100 Hz. (This will result ina1Hzresolution bandwidth with a digital ﬁlter.)

Measure the Power Level Accuracy

1. Connect the signal generator’s RF OUTPUT through the 6 dB attenuator to the spectrum analyzer’s RF input.

2. Transfer the power level results for each frequency at −15 dBm from the Measured Power column in Table 2-2 or Table 2-3 as appropriate, to the Power Meter Reading for

−15 dBm column in Table 2-4, “Power Level Accuracy Setup 2 (All Signal Generators),” on page 2-15.

3. On the spectrum analyzer, select

Marker Normal Mode and then select the Peak Search

function. This activates the marker and sets it to the signal peak.

4. On the spectrum analyzer, ensure that the marker is at the signal peak and use the

MKR-> menu to set the marker to the reference level. If necessary, select Peak Search to

ensure that the marker is at the signal peak.

5. With the marker at signal peak, select the Marker Delta function. This will set the marker to measure relative amplitude from a reference of 0 dB. If the marker does not read 0 dB, press

Marker Normal > Peak Search > Marker Delta until the marker reads 0 dB.

6. Decrease the signal generator amplitude in 10 dB steps as shown in Table 2-4. At each 10 dB step, select Peak Search to ensure that the marker is at the signal peak.

7. Measure the power levels shown in the Power Level Setting (dBm) column of Table 2-4 for the current frequency, and record the values in the Spectrum Analyzer Marker (dB) column.

8. Return the spectrum analyzer reference level and the signal generator amplitude to

−15 dBm. Set the signal generator frequency and the spectrum analyzer’s center frequency to the next frequency listed in Table 2-4 and repeat the process from step 3. Continue until all of the frequencies have been measured and recorded (to the maximum frequency of your signal generator).

2-6 Calibration Guide

ESG Family Signal Generators Operation Veriﬁcation

Veriﬁcation Procedures

Calculate the Actual Power Level

1. Calculate and record the Actual Power Level, in Table 2-4, as the sum of the Power Meter Reading for −15 dBm and the Spectrum Analyzer Marker (dB) value.

For example:

• Power Meter Reading for −15 dBm at 2.516 MHz = −14.95 dBm

• Spectrum Analyzer Marker (dB) at 2.516 MHz and Power Level Setting at

−85 dBm = −70.17 dB

• Actual Power Level at 2.516 MHz and −85 dBm: (−14.95) + (−70.17) = −85.12 dBm

2. Compare the calculated Actual Power Level value to the corresponding limits.

5. FM Accuracy Check

Connect the Test Equipment

Figure 2-4 FM Accuracy Equipment Setup

Conﬁgure the Signal Generator

1. Preset the signal generator to normal (factory-deﬁned) preset conditions.

2. Press

3. Press

4. Press

5. Press softkey.

6. Check that the MOD ON annunciator is displayed. If it is not, press Mod On/Off.

7. Press

Calibration Guide 2-7

FM/ΦM > FM Off On. The FM annunciator is displayed. FM Rate. Enter 1 using the numeric keypad and press the kHz terminator softkey. FM Dev. Enter 100 using the numeric keypad and press the kHz terminator softkey. Amplitude. Enter 7 using the numeric keypad and press the dBm terminator

RF On/Off. The RF ON annunciator is displayed.

Operation Veriﬁcation ESG Family Signal Generators Veriﬁcation Procedures

Conﬁgure the Measuring Receiver

1. Reset the measuring receiver.

2. Set the measuring receiver to FM mode.

3. Turn on Peak+ detector.

4. Turn on the 300 Hz high-pass ﬁlter.

5. Turn on the 3 kHz low-pass ﬁlter.

Measure the Deviations

1. Set the signal generator to the frequencies shown in Table 2-5, “FM Accuracy,” on page 2-19.

2. Record the deviations measured and compare them to the limits shown in Table 2-5.

6. AM Accuracy Check

Connect the Test Equipment

Figure 2-5 AM Accuracy Equipment Setup

Conﬁgure the Signal Generator

1. Preset the signal generator to normal (factory-deﬁned) preset conditions.

2. Press

3. Press

4. Press softkey.

5. Check that the MOD ON annunciator is displayed. If it is not, press Mod On/Off.

AM > AM Off On. The AM annunciator is displayed. AM Rate. Enter 1 using the numeric keypad and press the kHz terminator softkey. Amplitude. Enter 7 using the numeric keypad and press the dBm terminator

6. Press

2-8 Calibration Guide

RF On/Off. The RF ON annunciator is displayed.

ESG Family Signal Generators Operation Veriﬁcation

Veriﬁcation Procedures

Conﬁgure the Measuring Receiver

1. Reset the measuring receiver.

2. Set the measuring receiver to AM mode.

3. Turn on Peak+ detector.

4. Turn on the 300 Hz high-pass ﬁlter.

5. Turn on the 3 kHz low-pass ﬁlter.

Measure the Deviations

1. Set the signal generator to the frequencies and depths shown in Table 2-6, “AM

Accuracy,” on page 2-19.

2. Record the AM depths measured and compare them to the limits shown in Table 2-6.

7. I/Q Modulation Check (ESG-D Only)

1. Preset the signal generator to normal (factory-deﬁned) preset conditions.

2. Press

I/Q > I/Q Calibration. Check that Full is highlighted on the Calibration Type User Full

softkey. If not, press Calibration Type User Full.

3. Press range. The message

Execute Cal to begin an I/Q calibration for the signal generator’s full frequency

I/Q Calibration in Progress is displayed until the calibration is

complete.

Calibration Guide 2-9

Operation Veriﬁcation ESG Family Signal Generators Veriﬁcation Procedures

Test Tables

Table 2-1 Frequency Accuracy

Limits

Frequency

(MHz)

0.25 249 999. 250 001.

0.5 499 999. 500 001. 1 999 999. 1 000 001. 10 9 999 999. 10 000 001. 50 49 999 999. 50 000 001. 100 99 999 999. 100 000 001. 500 499 999 999. 500 000 001.

Lower (Hz)

Measured

(Hz)

Upper (Hz)

1000 999 999 999. 1 000 000 001. 2000 1 999 999 999. 2 000 000 001. 3000 2 999 999 999. 3 000 000 001. 4000 3 999 999 999. 4 000 000 001.

2-10 Calibration Guide

ESG Family Signal Generators Operation Veriﬁcation

Veriﬁcation Procedures

Table 2-2 Power Level Accuracy Setup 1 (Signal Generators without Option 1E6)

Frequency

Setting

Power Level

Setting

(dBm)

Lower Limit

(dBm)

Measured

Power (dBm)

Upper Limit

(dBm)

277 kHz +13 12.2 13.8

+7 6.5 7.5

0 −0.5 0.5

−5 −5.5 −4.5

−15 −15.5 −14.5

2.516 MHz +13 12.2 13.8 +7 6.5 7.5

0 −0.5 0.5

−5 −5.5 −4.5

−15 −15.5 −14.5

270.1 MHz +13 12.2 13.8 +7 6.5 7.5

0 −0.5 0.5

−5 −5.5 −4.5

−15 −15.5 −14.5

510.1 MHz +13 12.2 13.8 +7 6.5 7.5

0 −0.5 0.5

−5 −5.5 −4.5

−15 −15.5 −14.5

990.1 MHz +13 12.2 13.8 +7 6.5 7.5

0 −0.5 0.5

−5 −5.5 −4.5

−15 −15.5 −14.5

1350.1 MHz +10 9.2 10.8 +7 6.5 7.5

0 −0.5 0.5

Calibration Guide 2-11

Operation Veriﬁcation ESG Family Signal Generators Veriﬁcation Procedures

Frequency

Setting

1950.1 MHz +10 9.2 10.8

2310.1 MHz +10 8.8 11.2

2985.1 MHz +10 8.8 11.2

Power Level

Setting

(dBm)

−5 −5.5 −4.5

−15 −15.5 −14.5

+7 6.5 7.5

0 −0.5 0.5

−5 −5.5 −4.5

−15 −15.5 −14.5

+7 6.1 7.9

0 −0.9 0.9

−5 −5.9 −4.1

−15 −15.9 −14.1

Lower Limit

(dBm)

Measured

Power (dBm)

Upper Limit

(dBm)

+7 6.1 7.9

0 −0.9 0.9

−5 −5.9 −4.1

−15 −15.9 −14.1

3225.1 MHz +7 6.1 7.9 0 −0.9 0.9

−5 −5.9 −4.1

−15 −15.9 −14.1

4000 MHz +7 6.1 7.9

0 −0.9 0.9

−5 −5.9 −4.1

−15 −15.9 −14.1

2-12 Calibration Guide

ESG Family Signal Generators Operation Veriﬁcation

Veriﬁcation Procedures

Table 2-3 Power Level Accuracy Setup 1 (Signal Generators with Option 1E6)

Frequency

Setting

Power Level

Setting

(dBm)

Lower Limit

(dBm)

Measured

Power (dBm)

Upper Limit

(dBm)

277 kHz +9 8.2 9.8

+3 2.5 3.5

0 −0.5 0.5

−5 −5.5 −4.5

−15 −15.5 −14.5

2.516 MHz +9 8.2 9.8 +3 2.5 3.5

0 −0.5 0.5

−5 −5.5 −4.5

−15 −15.5 −14.5

270.1 MHz +9 8.2 9.8 +3 2.5 3.5

0 −0.5 0.5

−5 −5.5 −4.5

−15 −15.5 −14.5

510.1 MHz +9 8.2 9.8 +3 2.5 3.5

0 −0.5 0.5

−5 −5.5 −4.5

−15 −15.5 −14.5

990.1 MHz +9 8.2 9.8 +3 2.5 3.5

0 −0.5 0.5

−5 −5.5 −4.5

−15 −15.5 −14.5

1350.1 MHz +6 5.2 6.8 +3 2.5 3.5

0 −0.5 0.5

Calibration Guide 2-13

Operation Veriﬁcation ESG Family Signal Generators Veriﬁcation Procedures

Frequency

Setting

1950.1 MHz +6 5.2 6.8

2310.1 MHz +6 4.8 7.2

2985.1 MHz +6 4.8 7.2

Power Level

Setting

(dBm)

−5 −5.5 −4.5

−15 −15.5 −14.5

+3 2.5 3.5

0 −0.5 0.5

−5 −5.5 −4.5

−15 −15.5 −14.5

+3 2.1 3.9

0 −0.9 0.9

−5 −5.9 −4.1

−15 −15.9 −14.1

Lower Limit

(dBm)

Measured

Power (dBm)

Upper Limit

(dBm)

+3 2.1 3.9

0 −0.9 0.9

−5 −5.9 −4.1

−15 −15.9 −14.1

3225.1 MHz +3 2.1 3.9 0 −0.9 0.9

−5 −5.9 −4.1

−15 −15.9 −14.1

4000 MHz +3 2.1 3.9

0 −0.9 0.9

−5 −5.9 −4.1

−15 −15.9 −14.1

2-14 Calibration Guide

ESG Family Signal Generators Operation Veriﬁcation

Veriﬁcation Procedures

Table 2-4 Power Level Accuracy Setup 2 (All Signal Generators)

Power

Meter

Reading

for

−15 dBm

Spectrum

Analyzer

Marker

(dB)

Lower

Limit

(dBm)

Actual Power

Level

(dBm)

Upper

Limit

(dBm)

Frequency

Setting

Power

Level

Setting

(dBm)

277 kHz −15 0 (Ref) N/A N/A N/A

−25 −26 −24

−35 −36 −34

−45 −46 −44

−55 −56 −54

−65 −66 −64

−75 −76 −74

−85 −86 −84

2.516 MHz −15 0 (Ref) N/A N/A N/A

−25 −26 −24

−35 −36 −34

−45 −46 −44

−55 −56 −54

−65 −66 −64

−75 −76 −74

−85 −86 −84

270.1 MHz −15 0 (Ref) N/A N/A N/A

−25 −26 −24

−35 −36 −34

−45 −46 −44

−55 −56 −54

−65 −66 −64

−75 −76 −74

−85 −86 −84

510.1 MHz −15 0 (Ref) N/A N/A N/A

−25 −26 −24

−35 −36 −34

−45 −46 −44

Calibration Guide 2-15

Operation Veriﬁcation ESG Family Signal Generators Veriﬁcation Procedures

Power

Frequency

Setting

990.1 MHz −15 0 (Ref) N/A N/A N/A

Level

Setting

(dBm)

−55 −56 −54

−65 −66 −64

−75 −76 −74

−85 −86 −84

−25 −26 −24

−35 −36 −34

−45 −46 −44

−55 −56 −54

−65 −66 −64

−75 −76 −74

−85 −86 −84

Power

Meter

Reading

for

−15 dBm

Spectrum

Analyzer

Marker

(dB)

Lower

Limit

(dBm)

Actual Power

Level

(dBm)

Upper

Limit

(dBm)

1350.1 MHz −15 0 (Ref) N/A N/A N/A

−25 −26 −24

−35 −36 −34

−45 −46 −44

−55 −56 −54

−65 −66 −64

−75 −76 −74

−85 −86 −84

1950.1 MHz −15 0 (Ref) N/A N/A N/A

−25 −26 −24

−35 −36 −34

−45 −46 −44

−55 −56 −54

−65 −66 −64

−75 −76 −74

−85 −86 −84

2-16 Calibration Guide

ESG Family Signal Generators Operation Veriﬁcation

Veriﬁcation Procedures

Power

Meter

Reading

for

−15 dBm

Spectrum

Analyzer

Marker

(dB)

Lower

Limit

(dBm)

Actual Power

Level

(dBm)

Upper

Limit

(dBm)

Frequency

Setting

Power

Level

Setting

(dBm)

2310.1 MHz −15 0 (Ref) N/A N/A N/A

−25 −26 −24

−35 −36 −34

−45 −46 −44

−55 −56 −54

−65 −66 −64

−75 −76 −74

−85 −86 −84

2985.1 MHz −15 0 (Ref) N/A N/A N/A

−25 −26 −24

−35 −36 −34

−45 −46 −44

−55 −56 −54

−65 −66 −64

−75 −76 −74

−85 −86 −84

3225.1 MHz −15 0 (Ref) N/A N/A N/A

−25 −26 −24

−35 −36 −34

−45 −46 −44

−55 −56 −54

−65 −66 −64

−75 −76 −74

−85 −86 −84

4000 MHz −15 0 (Ref) N/A N/A N/A

−25 −26 −24

−35 −36 −34

−45 −46 −44

−55 −56 −54

Calibration Guide 2-17

Operation Veriﬁcation ESG Family Signal Generators Veriﬁcation Procedures

Frequency

Setting

Power

Level

Setting

(dBm)

−65 −66 −64

−75 −76 −74

−85 −86 −84

Power

Meter

Reading

for

−15 dBm

Spectrum

Analyzer

Marker

(dB)

Lower

Limit

(dBm)

Actual Power

Level

(dBm)

Upper

Limit

(dBm)

2-18 Calibration Guide

ESG Family Signal Generators Operation Veriﬁcation

Veriﬁcation Procedures

Table 2-5 FM Accuracy

Frequency

(MHz)

500.001 100 kHz 96.48 103.52 750 100 kHz 96.48 103.52

1000 100 kHz 96.48 103.52

Table 2-6 AM Accuracy

Frequency

(MHz)

200 30 27.5 32.5 200 90 84.5 95.5 300 30 27.5 32.5 300 90 84.5 95.5 501 30 27.5 32.5 501 90 84.5 95.5

Deviation

(kHz)

Depth (%)

Limits (kHz)

Lower Measured Upper

Limits (%)

Lower Measured Upper

750 30 27.5 32.5 750 90 84.5 95.5

1000 30 27.5 32.5 1000 90 84.5 95.5

Calibration Guide 2-19

Operation Veriﬁcation ESG Family Signal Generators Veriﬁcation Procedures

2-20 Calibration Guide

ESG Family Signal Generators

3Service Software

The ESG Family Support Software contains the program and supporting ﬁles necessary to run the automated performance tests and adjustments for your signal generator. This chapter lists the equipment required to run the software, and gives instructions for installing, administering, using and un-installing the software. For a description of the individual performance tests and adjustments, refer to Chapter 4, “Performance Tests,” and Chapter 5, “Adjustments.”

Calibration Guide 3-1

Service Software ESG Family Signal Generators Required Test Equipment

Required Test Equipment

The following equipment is required to run the software:

• Personal computer with the following speciﬁcations:

• 386/33 MHz CPU, or better

• 8 Mbytes of RAM

• Hard drive with at least 350 Mbytes free

• 16-color VGA monitor

• 3.5-inch disk drive

• MS Windows 3.x, MS Windows 95, or MS Windows NT.

• 2 Button Mouse (optional)

• Printer, MS Windows-supported (for test results documentation)

• HP 82341C/D GPIB Interface Card

• HP SICL Libraries must be installed and conﬁgured.

NOTE No other MS Windows programs may be running during installation. Close

any MS Windows programs that are currently running prior to starting the installation.

3-2 Calibration Guide

ESG Family Signal Generators Service Software

Installing the ESG_B or ESG_APDP Service Software

NOTE If you are installing the ESG_B or ESG_APDP Service Software onto a

computer which already has service software older than version A.03.00, you must ﬁrst remove the old version before installing the new software.

Follow this procedure to install the ESG_B or ESG_APDP Service Software on your personal computer.

1. Insert “Disk 1” into the disk drive.

2. To display the Run dialog box:

• For MS Windows 95 or Windows NT: Select the Start button, then select Run ... from the pop-up menu.

• For MS Windows version 3.x: Open the Program Manager, then select Run ... from the File drop-down menu.

3. From the Run dialog box, type The Setup window is displayed as it loads ﬁles for the installation. Once these ﬁles are

loaded, the ESG Service Software’s Welcome screen is displayed.

4. Continue with the setup by selecting the Next button.

5. The ESG Service Software’s Important Information window is displayed. It contains information that is vital to installing and using the software. In addition, any new information may also be shown on this screen. Stop and read this information before continuing with the software installation!

6. Continue with the setup by selecting the Next button. The Choose Destination Location window is displayed. The default location for

installing the software is C:\HP_SVC\ESG_B (or C:\HP_SVC\ESG_APDP). Use this as the software’s destination folder.

7. Continue with the setup by selecting the Next button. The ESG Service Software’s Select Program Folder window is displayed. This

installation procedure will install the service software icons into a program folder. You can enter a new folder name in the Program Folders text ﬁeld or select a folder from the Existing Folders ﬁeld. It is recommended to use “ESG_B Service Software” (or “ESG_APDP Service Software”) for the folder name.

a:setup and select the OK button.

NOTE This documentation refers to the folder name as “ESG_B Service Software.”If

you use another name for the folder, be aware of this difference.

Calibration Guide 3-3

Service Software ESG Family Signal Generators

Installing the ESG_B or ESG_APDP Service Software

8. Continue with the setup by selecting the Next button. The ESG Service Software’s, Start Copying Files window is displayed. This window

shows the destination directory and the folder name settings. To change these settings, select the Back button until the appropriate window is displayed.

NOTE This is the last point that you can cancel the installation. If you select the

Next button, the installation proceeds until the software is completely installed.

9. Select the Next button to go ahead with the installation process. The graphic on the left of the screen shows the status of each ﬁle as it is copied to the

destination directory, the status of each disk that is being copied, and the status of the overall memory of the destination. The graphic in the center of the screen keeps you updated on the destination folder, the ﬁles that are being copied, and the progress of the installation.

When the contents of the disk have been copied to their destination, you are notiﬁed to insert each of the next disks by the Setup Needs the Next Disk dialog box.

10. Insert the next disk, as instructed, and select the OK button. When the installation is complete, the Setup Complete window is displayed. You will be

asked to select whether you want to view the README ﬁle or the INFO ﬁle. (You already read the INFO ﬁle when you started the installation.)

11. Select the README ﬁle and then select the Finish button. The text editor will display the ﬁle. To close this ﬁle select the File pull down menu and

then select Exit.

12. Select the Yes, I want to restart my computer now radio button. Ensure that the last disk has been removed and then choose the Finish button to restart MS Windows.

NOTE The MS Windows program must be restarted before you can use the software.

When you select restart, the computer reboots.

If you do not want to restart MS Windows at this time, select the No, I will restart my computer later radio button. If you select restart, the computer reboots and you can start using the software.

3-4 Calibration Guide

ESG Family Signal Generators Service Software

Uninstalling the Software

• MS Windows 95 or Windows NT:

1. Display the Control Panel program group by pressing Start > Settings > Control Panel.

2. Select the Add/Remove Programs icon.

3. From the Install/Uninstall Tab in the Add/Remove Programs properties dialog box: a. Select ESG_B, then select the Add/Remove button.

b. Select ESG Service Software, then select the Add/Remove button.

4. If the Details button is displayed, the program is removed but the path has not been removed. Click the Details button and note the path. Then click OK.

5. Display the MS Windows Explorer dialog box by selecting Start > Programs > Windows Explorer.

6. Select the path that you previously noted, and if you are not using these ﬁles for another purpose, select Delete from the Files drop-down menu to delete the path.

• MS Windows version 3.x:

1. From the Program Manager, click on program group (HP Service Support was the program’s default title) to highlight the program group name.

2. From the File drop-down menu, select Delete.

3. From the File Manager, select the subdirectory where the program is stored. (The program’s default subdirectory was hp_svc.)

4. From the File drop-down menu, select Delete.

Calibration Guide 3-5

Service Software ESG Family Signal Generators ESG Family Support Software Administration

ESG Family Support Software Administration

The following section shows you how to administer and run the ESG Family Support Software. The software’s administrative functions allow for the addition or removal of all necessary test equipment, software drivers, and test procedures. This would include additional software drivers (as they are released) to extend the range of tests and equipment supported by the ESG family test set, or maintenance releases of the current drivers.

Software Conﬁguration

Follow the instructions below to conﬁgure the software to run in either User Mode or Administration Mode.

Start the software using the steps appropriate for the version of MS Windows that is installed on your PC.

• For MS Windows version 3.x:

1. Open the Program Manager window.

2. Open the HP Service Support program group.

3. Open the HP Service Software icon.

• For MS Windows 95 or Windows NT:

1. Select Start.

2. Select HP Service Software for PC’s.

3. Select HP Service Software.

The service support software has two conﬁgurations: User and Administration. The following sections explain the difference between the two conﬁgurations.

Figure 3-1 The User Information Window

3-6 Calibration Guide

ESG Family Signal Generators Service Software

ESG Family Support Software Administration

The User Conﬁguration

Logging on in User Conﬁguration only allows access to the instrument’s performance tests and adjustments. Refer to “Starting the Software” on page 3-20.

The Administration Conﬁguration

Logging on in Administration Conﬁguration supports all administrative functions, including the addition of new equipment and the installation of test procedures and device drivers.

Administering the Service Support Software

1. Refer to the illustration above and ﬁll in the ﬁelds in the User Information window: a. In the User Name ﬁeld, type in the word Admin. (Case sensitive.)

b. In the Password ﬁeld, type in the word Falcon. (Case sensitive.)

2. Click OK. (Cancel closes the software application.)

Identifying the DUT

When the DUT Selection dialog box is displayed:

Calibration Guide 3-7

Service Software ESG Family Signal Generators ESG Family Support Software Administration

1. Make sure that ESG_B is selected in the Select an Instrument Family list.

2. In the Select Model list, select the instrument model of the DUT to be adjusted or tested.

3. In the Serial Number box, enter the complete serial number of the DUT.

4. In the Address box, enter the two-digit GPIB address of the DUT. (To display the address on the signal generator, press

Utility > GPIB/RS-232. The GPIB Address softkey

shows the current address.)

5. Select the OK button.

6. The Select Test Equipment and Tests window appears on the display. Close this window.

Adding Test Equipment

Before any performance tests can be run, information regarding your speciﬁc test equipment must be entered into the software’s database. This information includes the serial numbers, calibration dates, GPIB address, and traceability data for each individual component. Only equipment which has been entered into the system will be available for the test equipment selection process during the test setup. To add test equipment, follow the instructions below:

1. Refer to Figure 3-2. In the File drop-down menu, select Test Equipment.

Figure 3-2 Test Equipment in the File Drop-Down Menu

2. Refer to Figure 3-3. In the Test Equipment dialog box, select the Device Type for the new equipment you are adding.

3-8 Calibration Guide

ESG Family Signal Generators Service Software

ESG Family Support Software Administration

Figure 3-3 Adding Test Equipment Using the Test Equipment Menu

3. Select the model of the device.

4. Click Add.

5. In the New Test Equipment window (refer to Figure 3-4), enter the following parameters into the appropriate box:

Serial Number of the new equipment. GPIB Address of the new equipment. This address must be in the range of 0

through 31 and it should not conﬂict with any other instrument address already present in the test setup.

NOTE The power sensor must be assigned GPIB address −1 (negative 1).

Cal Due Date the projected calibration due date of the new equipment. Trace Number the calibration tracking number. This is the last required item. Calibration Type (optional) is used only when special calibration data is associated

with the device being added, and only as a function setup by the factory for equipment requiring speciﬁc calibration data. The only devices currently requiring this feature are power sensors.

Table 3-1 is an example of the calibration information required to ensure accuracy for measurements using the power sensor. This window is accessed for data entry by selecting the words CAL DATA from the Calibration Type ﬁeld in the Edit or New Test Equipment window, Figure 3-4.

Calibration Guide 3-9

Service Software ESG Family Signal Generators ESG Family Support Software Administration

Table 3-1 An Example of Calibration Data for Power Sensors

Frequency (MHz)

0.1000 97.6

0.3000 98.9

1.0 99.1

3.0 99.4

Figure 3-4 Adding the Equipment Information Using the New Test Equipment

Window

Calibration

Factor (%)

6. Click OK. NOTE The serial number of the test equipment added will be displayed in the

Equipment ﬁeld of the Test Equipment dialog box (Figure 3-3).

Removing Test Equipment

Removal of test equipment is accomplished using the Test Equipment dialog box. Refer to

Figure 3-5.

1. Select the Device Type of the test equipment to be removed.

3-10 Calibration Guide

ESG Family Signal Generators Service Software

ESG Family Support Software Administration

Figure 3-5 Removing and Editing Test Equipment Using the Test Equipment

Window

2. Select the model of the test equipment to be removed from the Models ﬁeld.

3. Select the serial number of the test equipment to be removed from the Equipment ﬁeld.

4. Click Remove.

5. Click Close.

Editing Test Equipment

Editing test equipment parameters is accomplished using the Test Equipment dialog box. Refer to Figure 3-5.

1. Select the Device Type of the test equipment to be edited.

2. Select the model of the test equipment to be edited from the Models ﬁeld.

3. Select the serial number of the test equipment to be edited.

4. Click Edit. The Edit Test Equipment window will appear. Change the ﬁeld parameters as necessary.

5. Click OK to save the changes and close the window.

6. Click Close in the Test Equipment window.

Calibration Guide 3-11

Service Software ESG Family Signal Generators ESG Family Support Software Administration

Adding Device Drivers

Follow these instructions to add test equipment device drivers to the program: CAUTION This and the following procedures: Adding/Removing Device (Test

Equipment) Drivers, Adding/Removing Test Drivers, and Adding/Removing Datapacks are included for informational purposes. These procedures should only be used when instructions are provided describing which drivers or datapacks need replacement or removal.

1. Log into the software normally until the Select Test Equipment and Tests window is displayed.

2. Click the Cancel button to close the Select Test Equipment and Tests window.

3. Refer to Figure 3-6. In the File drop-down menu, select Test Equipment Drivers.

Figure 3-6 Test Equipment Drivers in the File Drop-Down Menu

This selection allows for the addition or removal of software drivers for the test equipment being used to verify the performance of the DUT.

4. To add a device driver to the existing list of test equipment drivers, click Add (Figure 3-7).

3-12 Calibration Guide

ESG Family Signal Generators Service Software

ESG Family Support Software Administration

Figure 3-7 Adding a Device Driver Using the Test Equipment Drivers Window

5. Refer to Figure 3-8. Using the standard ﬁle search procedure, select the driver that you are adding and click OK.

Figure 3-8 Using the Open Dialog Box to Search for a Device Driver File to

Add

The selected driver should now be displayed in the Test Equipment Drivers dialog box, as seen in Figure 3-9.

Calibration Guide 3-13

Service Software ESG Family Signal Generators ESG Family Support Software Administration

Removing Device Drivers

Removing device drivers is accomplished using the Test Equipment Drivers dialog box. Refer to Figure 3-9.

1. Select the driver (.dll) ﬁle to be removed.

Figure 3-9 Removing a Device Driver Using the Test Equipment Drivers

Window

2. Ensure that the information displayed in the Version, Device Type, and Models Supported ﬁelds reﬂects the correct information for the selected driver being removed.

3. Click Remove.

4. Click Close.

Adding Test Drivers

Adding software drivers is accomplished using the Test Drivers window.

1. Refer to Figure 3-10. In the File drop-down menu, select Test Drivers.

3-14 Calibration Guide

ESG Family Signal Generators Service Software

ESG Family Support Software Administration

Figure 3-10 Test Drivers in the File Drop-Down Menu

2. Refer to Figure 3-11. To add a test driver to the existing list of test drivers, click Add.

Figure 3-11 Adding a Test Driver Using the Test Drivers Window

Calibration Guide 3-15

Service Software ESG Family Signal Generators ESG Family Support Software Administration

3. Refer to Figure 3-12. Using the standard ﬁle search procedure, select the test driver that you are adding and click OK.

Figure 3-12 Using the Open Dialog Box to Search for a Test Driver File to Add

The selected driver should now be displayed in the Test Drivers dialog box, as seen in

Figure 3-11.

4. Click Close (Figure 3-11).

3-16 Calibration Guide

ESG Family Signal Generators Service Software

ESG Family Support Software Administration

Removing Test Drivers

Removing test drivers is accomplished using the Test Drivers dialog box. Refer to

Figure 3-13.

1. Select the driver (

.dll) ﬁle to be removed.

Figure 3-13 Removing a Test Driver Using the Test Drivers Window

2. Ensure that the information displayed in the Version, Required Devices, and Tests Supported ﬁelds reﬂects the correct information for the selected driver being removed.

3. Click Remove.

4. Click Close.

Adding Datapacks

Adding datapacks for test procedures is accomplished using the Datapacks dialog box.

1. Refer to Figure 3-14. In the File drop-down menu, select Datapacks.

Calibration Guide 3-17

Service Software ESG Family Signal Generators ESG Family Support Software Administration

Figure 3-14 Datapacks in the File Drop-Down Menu

2. Refer to Figure 3-15. To add a datapack to the existing list of datapacks, click Add.

Figure 3-15 Adding a Datapack Using the Datapacks Window

3. Refer to Figure 3-16. Using the standard ﬁle search procedure, select the datapack that you are adding and click OK.

3-18 Calibration Guide

ESG Family Signal Generators Service Software

ESG Family Support Software Administration

Figure 3-16 Using the Open Dialog Box to Search for a Datapack File to Add

The selected driver should now be displayed in the Datapacks dialog box, as seen in

Figure 3-15.

4. Click Close (Figure 3-15).

Removing Datapacks

Removing datapacks is accomplished using the Datapacks dialog box. Refer to Figure 3-17.

1. Select the datapack (

Figure 3-17 Removing a Datapack Using the Datapacks Window

.000) ﬁle to be removed.

2. Click Remove.

3. Click Close.

Calibration Guide 3-19

Service Software ESG Family Signal Generators Running the Service Support Software

Running the Service Support Software

Starting the Software

1. Start the software using the steps appropriate for the version of MS Windows that is installed on your PC.

• For MS Windows 95:

a. Select Start. b. Select HP Service Support for PC’s. c. Select HP Service Software.

• For MS Windows version 3.x:

a. Open the Program Manager window. b. Open the HP Service Support program group. c. Select the HP Service Support icon.

2. Once the User Information dialog box is displayed, enter the user name and the password.

a. In the User Name box, enter User. (Case sensitive.) b. In the Password box, enter User. (Case sensitive.) c. Click OK.

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ESG Family Signal Generators Service Software

Running the Service Support Software

Identifying the DUT

When the DUT Selection dialog box is displayed,

1. Make sure that ESG_B is selected in the Select An Instrument Family list.

2. In the Select Model list, select the signal generator model of the DUT to be adjusted or tested.

3. In the Serial Number box, enter the complete serial number of the DUT.

4. In the Address box, enter the two-digit GPIB address of the DUT. (To display the address on the signal generator, press

Utility > GPIB/RS-232. The GPIB Address softkey

shows the current address.)

5. Select the OK button.

Calibration Guide 3-21

Service Software ESG Family Signal Generators Running the Service Support Software

Selecting Performance Tests or Adjustments and the Test Equipment

When the Select Test Equipment and Tests window is displayed,

1. Select either the Performance Tests radio button to display the list of automated performance tests or the Adjustments radio button to display the list of automated adjustments.

2. From the list of performance tests or adjustments, select the tests or adjustments that will be performed on the DUT. Select a test name by clicking on it (the DCFM FREQUENCY OFFSET test will be selected for the sections following). The selected test will be highlighted.

Select all of the performance tests or adjustments by selecting the Select All button. Unselect all of the selected tests or adjustments by choosing the Unselect button.

As each test or adjustment is selected, the test equipment required to perform the test or adjustment is listed in the Required Test Equipment box. As each test or adjustment is removed from the list, the test equipment required to perform the test or adjustment is removed from the list. Only the test equipment for the highlighted tests is displayed in the list.

3-22 Calibration Guide

ESG Family Signal Generators Service Software

Running the Service Support Software

3. Once the test is highlighted, identify all test equipment listed in the Required Test Equipment box. To identify test equipment:

a. Select the type of device from the Device Type list. b. Select the model number from the Model list for the device. c. Select the device’s serial number from the Available Test Equipment list. d. Select the Add button to add the device to the list in the Selected Test Equipment

box. The following buttons are available for the Selected Test Equipment box: Add Copies the tests and adjustments highlighted in the Available Test

Equipment box to the Selected Test Equipment box.

Remove Removes the highlighted test equipment from the Selected Test

Equipment box.

Clear Removes all of the test equipment from the Selected Test Equipment

box.

NOTE If necessary, the test equipment GPIB address can be changed after it is

added to the Selected Test Equipment box. Change the GPIB address by pressing the right arrow on the keyboard until the GPIB address selection in the Selected Test Equipment box is selected. (The GPIB address is selected when it has a dark box around the selection.) Then, type the new GPIB address and press Enter to change the address.

e. Repeat the previous steps for each test equipment instrument.

4. Once the test equipment has been identiﬁed, select the Add button located above the Selected Testsbox to add each of the highlighted performance tests or adjustments. The tests or adjustments that were highlighted are now displayed in the list in the Selected Tests box.

The following buttons are available for the Selected Tests box: Add Copies the tests and adjustments highlighted in the list of tests and

adjustments to the Selected Tests box.

Remove Removes the highlighted tests and adjustments from the Selected Tests

box.

Clear Removes all of the tests and adjustments from the Selected Tests box.

Calibration Guide 3-23

Service Software ESG Family Signal Generators Running the Service Support Software

5. If the appropriate tests or adjustments are listed in the Selected Tests box and the appropriate test equipment is listed in the Selected Test Equipment box, select the OK button.

Deﬁning the Location where the Test Results are Saved

1. When the Save As dialog box is displayed, select the File Name box and enter the ﬁle name into which you would like to save the test results.

The results ﬁle name sufﬁx is You may select the directory into which you would like to save the ﬁle by changing the drive and folder in this window. This ﬁle is a text ﬁle and can be viewed using many text editors. Notepad, a standard accessory in MS Windows, is an example of a text editor that can be used to view text ﬁles.

.log. The results are saved automatically to the.log ﬁle.

3-24 Calibration Guide

ESG Family Signal Generators Service Software

Running the Service Support Software

2. Once you have selected the drive, folder, and assigned a ﬁle name, select the OK button to save these settings for when the tests are complete.

Running the Tests and Adjustments

Once the HP Service Support Software window is displayed:

1. Select the Run button to start the automated tests or adjustments displayed in the Selected Tests box.

The software steps through the tests or adjustments sequentially.

2. Follow the instructions displayed on the PC. A description for each automated performance test or adjustment can be found in

Chapter 4, “Performance Tests,” and Chapter 5, “Adjustments.”

Calibration Guide 3-25

Service Software ESG Family Signal Generators Running the Service Support Software

Reviewing the Test and Adjustment Results

Once the tests have ﬁnished running, you will want to review the results of the tests. The HP Service Support Software window displays the DUT model number and serial number, the selected tests, the results of the selected test, and the current test information. Six buttons, which are used to control the testing, are also displayed.

The Selected Tests box displays the name of the selected tests, the pass/fail status (P/F) of each test that has been run, the total number of points that each test checks, and the number of points that passed and failed for each test. The pass/fail status indicates a failure if any point in that test fails.

The Selected Test Results box shows the results of the test that is highlighted in the Selected Tests box. The Selected Test Results box shows the pass/fail status (P/F), the lower limits (LL), the measured value (Result), the upper limits (UL), and the measured units (for example, kHz, mV, or dBm) for each test point checked by the performance tests and some adjustments. “**” indicates values not displayed by the adjustments.

The Current test box shows the results of the test that is currently running. The Current test box shows the pass/fail status (P/F), the lower limits (LL), the measured value (Result), the upper limits (UL), and the measured units (for example, kHz, mV, or dBm) for each test point checked by the performance tests and some adjustments. “**” indicates values not displayed by the adjustments.

The following buttons are also displayed on the HP Service Support Software window. These buttons are used to control the testing. Only the buttons that are appropriate are active. For example, if the test is already in progress, the Run button would not be active.

Run Start running the highlighted test when initially starting the testing. Also

used to start testing at the same point where the test was stopped.

Stop Stop the test that is currently running. The test stops after making the

next measurement.

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ESG Family Signal Generators Service Software

Running the Service Support Software

Restart Rerun a test that was running when the testing was stopped. This restarts

the test from the beginning.

Next Test Quit running the current test and give it a Fail status. Then, continue

testing with the next test.

Rerun Restart the testing at the beginning of the ﬁrst test. Abort Quit testing. Abort all tests.

Printing the Test and Adjustment Results

Once the tests are complete, a dialog box is displayed that asks if you want to print the log ﬁle.

The log ﬁle is the ﬁle in which the test (or adjustment) results are stored. Select the Yes button to print the test results using the printer connected to LPT1. Choosing the No button allows you to exit the program without printing the test results.

There are two other methods of printing the test results. The ﬁrst method is selecting the Print Log File selection from the File drop-down menu.

The software asked you to deﬁne the computer path and ﬁle name when the tests were performed. The default directory is the “log” subdirectory of the destination directory where you installed the software. (C:\HP_SVC\EGS_B\ was the default destination directory.)

The second alternative method of printing is opening the ﬁle in a text editor and printing the ﬁle in the text editor.

Exiting the Software

Exit the software by selecting Exit from the ﬁle drop-down menu. Pressing Alt-F4 on the keyboard is an alternate method of exiting the software.

Calibration Guide 3-27

Service Software ESG Family Signal Generators Running the Service Support Software

3-28 Calibration Guide

ESG Family Signal Generators

4Performance Tests

Unless stated otherwise, the procedures in this chapter enable you to test the electrical performance of the signal generator to its speciﬁcations.

Calibration Guide 4-1

PerformanceTests ESG Family Signal Generators

Calibration Cycle

This instrument requires periodic veriﬁcation of performance. Under normal use and environmental conditions, the instrument should be calibrated every two years. Normal use is deﬁned as about 2,000 hours of use per year.

PerformanceTest Records

Unless stated differently, the ESG Family Support Software can print a test record that contains the results of the automated performance tests. For each of the two manual performance tests, “Timebase Aging Rate (ESG-AP, ESG-DP or Option 1E5 only)” and “Measuring Phase Noise and Residual FM (ESG-AP and ESG-DP Series Signal Generators),” a performance test record is located at the end of this chapter so it can be photocopied for use.

Recommended Test Equipment

The recommended test equipment table, located in Chapter 1, “Equipment Required,” is the complete list of equipment required to perform the procedures in this chapter. Test equipment is also listed with each test and is shown in the test setup. However, to avoid clutter in the ﬁgures, the controller required to run the support software is not shown in the test setup for each automated test. The controller must be connected via GPIB to all of the test equipment in the currently selected automated tests. For performance tests, other equipment can be substituted for the recommended models if it meets or exceeds the critical speciﬁcations listed in Chapter 1, “Equipment Required.” For the adjustment procedures, no equipment substitutions are available.

4-2 Calibration Guide

ESG Family Signal Generators PerformanceTests

Support Software

The ESG Family Support Software runs performance tests and where applicable, generates reports of the results for the tests. The following manual tests are not listed in the software:

• Timebase Aging Rate (ESG-AP, ESG-DP or Option 1E5 only)

• Measuring Phase Noise and Residual FM (ESG-AP and ESG-DP Series Signal Generators)

This chapter shows how to run the software to test and verify the performance of a signal generator. Chapter 3, “Service Software,” explains how to set up the software for a particular set of test instruments and interfaced components in a test environment.

Running the Performance Tests

1. Load the support software into the personal computer. Refer to Chapter 3, “Service

Software,” for installation instructions.

2. Click on the installed support software icon.

3. Fill in the ﬁelds in the User Information window (Figure 4-1): a. In the User Name ﬁeld (item 1), enter User. (Case sensitive.)

b. In the Password ﬁeld (item 2), enter User. (Case sensitive.)

4. Click OK.

Figure 4-1 The User Information Window

5. In the DUT (Device Under Test) Selection Window (Figure 4-2): a. In the Select Model list (item 3), choose the correct model number of your signal

generator. b. In the Serial Number box (item 4), enter the complete serial number of the DUT. c. In the Address box (item 5), enter the two-digit GPIB address of the signal generator.

(To display the address on the signal generator, press

GPIB Address. The GPIB Address softkey shows the current address.)

Utility > GPIB/RS-232 >

6. Click OK.

Calibration Guide 4-3

PerformanceTests ESG Family Signal Generators Support Software

Figure 4-2 The DUT Selection Window

7. In the Select Test Equipment and Tests window (Figure 4-3), create a list of test equipment that will verify the signal generator’s performance:

a. In the Device Type list (item 6), select a device type that you want to add to the

equipment list.

b. In the Model list (item 7), select the model of the device type that you want to add to

the equipment list.

c. In the Available Test Equipment box (item 8), select the serial number of an

instrument. There may be more than one instrument available for any model. Make sure that the instrument calibration due date has not passed. If the due date has passed, use another available instrument. Also, alert your system administrator that

the instrument is due for calibration. d. Click Add (item 9) to add the instrument to the test equipment list. e. Continue adding test equipment to the list by repeating these steps.

NOTE You can correct mistakes while you are entering instruments in the test

equipment list:

• To delete a single entry in the equipment list, click on the unwanted selection in the Selected Test Equipment box and then click Remove (item

11).

• To delete the entire list of equipment, click Clear (item 12).

4-4 Calibration Guide

ESG Family Signal Generators PerformanceTests

Support Software

Figure 4-3 The Select Test Equipment and Tests Window

8. Create a list of performance tests that you want the software to run (Figure 4-3): a. In the Available Tests list (item 13), select a performance test.

b. Click Add (item 14) to add the test to the list of tests that the software will run.

You can view the Required Test Equipment list (item 15) for a performance test by clicking on the test title in the Available Tests (item 13) box.

c. Continue adding performance tests to the list by repeating these steps.

NOTE You can correct mistakes while you are entering tests in the performance test

list:

• To delete a single entry in the test list, select the unwanted test in the Selected Tests box (item 16) and then click Remove (item 17).

• To delete the entire list of equipment, click Clear (item 18).

9. When you are done, click OK (item 19).

Calibration Guide 4-5

PerformanceTests ESG Family Signal Generators Support Software

10.To save the test results to a ﬁle, make the following selections (Figure 4-4): a. Click on the Drives window (item 20) and select the drive where you want to save the

test results.

b. Click on the Save ﬁle as type window (item 21) and select the ﬁle type for saving the

test results.

c. Click on the File name window (item 22) and type in a name for the test results ﬁle.

11.Click OK (item 23).

Figure 4-4 The Save As Window

12.In the Main Test and Results window (Figure 4-5), verify that the selected DUT (item

24), serial number (item 24), and selected tests (item 25) are correct. Then click Run. The selected performance tests are listed in the order in which they will run. You

cannot change this order. During the testing sequence the window shows the following information:

• the model and serial number of the signal generator under test (item 24)

• the list of selected performance tests with the current test highlighted (item 25)

• the performance test currently running (item 26)

• the data points taken (item 27)

• the total number of data points that will be measured during the test (item 28)

• the number of points that have currently passed the test (item 29)

• the number of points that have currently failed the test (item 30)

• the lower limits (LL) (item 31) and upper limits (UL) (item 32) for each test point

• the measured results (item 33) and the pass/fail (P/F) (item 34) indication

4-6 Calibration Guide

ESG Family Signal Generators PerformanceTests

Support Software

You can scroll the results window, vertically and horizontally. You can also click on the following buttons during the test sequence:

Run Start running the highlighted test when initially starting the testing.

Also used to start testing at the same point where the test was stopped.

Stop Stop the test that is currently running. The test stops after making the

next measurement.

Restart Rerun a test that was running when the testing was stopped. This

restarts the test from the beginning.

Next Test Quit running the current test and give it a Fail status. Then, continue

testing with the next test.

Rerun Restart the testing at the beginning of the ﬁrst test. Abort Quit testing. Abort all tests.

Tobegin a performance test sequence with a new DUT, click File and New Session. This allows you to reselect the DUT, the equipment list, and the performance test list.

Figure 4-5 The Main Test and Results Window

13.When the software has run all of the selected performance tests, the status bar indicates that the tests are completed (item 35).

Calibration Guide 4-7

PerformanceTests ESG Family Signal Generators Support Software

Printing the Performance Test Results

1. To print all the results of the entire test sequence, click File and Print.

Exiting the Support Software Program

1. To exit the performance tests program, click File and Exit.

4-8 Calibration Guide

ESG Family Signal Generators PerformanceTests

1. Internal FM Accuracy and Distortion

These automated tests verify the FM accuracy and distortion speciﬁcations. Accuracy is veriﬁed directly with a measuring receiver, and distortion is veriﬁed by measuring the demodulated output of the measuring receiver, using the audio analyzer. The audio analyzer provides a more accurate veriﬁcation with better resolution, as opposed to the measuring receiver alone.

Recommended Equipment

• HP/Agilent 8902A Measuring Receiver Option 010

• HP/Agilent 8903B Audio Analyzer

Equipment Setup

Figure 4-6 Internal FM Accuracy and Distortion Tests Setup

Calibration Guide 4-9

PerformanceTests ESG Family Signal Generators

2. Internal AM Accuracy and Distortion

These automated tests verify the AM accuracy and distortion speciﬁcations. For frequencies at or below 1300 MHz, accuracy is veriﬁed directly with a measuring

receiver, and distortion is veriﬁed by measuring the demodulated output from the measuring receiver with an audio analyzer. The audio analyzer provides a more accurate veriﬁcation with better resolution than using the measuring receiver alone.

For frequencies above 1300 MHz, the RF output from the signal generator is mixed with the output from another signal generator (local oscillator) to produce a suitable input frequency for the measuring receiver.

For a frequency of 4 GHz, veriﬁcation is accomplished by covering two different frequency spans through the use of two mixers.

Recommended Equipment

• HP/Agilent 8902A Measuring Receiver Option 010

• HP/Agilent 8903B Audio Analyzer

• HP/Agilent 8663A Signal Generator

• MD/MDC-174 Mixer (1 to 2800 MHz)

• MD/MDC-164 Mixer (0.5 to 9 GHz)

Equipment Setups

Figure 4-7 Accuracy and Distortion for AM ≤ 1300 MHz Test Setup

4-10 Calibration Guide

ESG Family Signal Generators PerformanceTests

2. Internal AM Accuracy and Distortion

Figure 4-8 Accuracy and Distortion for AM > 1300 MHz and ≤ 2500 MHz Test Setup

Figure 4-9 Accuracy and Distortion for AM > 2500 MHz Test Setup

Calibration Guide 4-11

PerformanceTests ESG Family Signal Generators

3. Phase Modulation Accuracy and Distortion

These automated tests verify the phase modulation accuracy and distortion speciﬁcations. Accuracy is veriﬁed directly with a measuring receiver, and distortion is veriﬁed by measuring the demodulated output from the measuring receiver, using the audio analyzer. The audio analyzer provides a more accurate veriﬁcation with better resolution than using the measuring receiver alone.

Recommended Equipment

• HP/Agilent 8902A Measuring Receiver Option 010

• HP/Agilent 8903B Audio Analyzer

Equipment Setup

Figure 4-10 Accuracy & Distortion for Phase Modulation Tests Setup

4-12 Calibration Guide

ESG Family Signal Generators PerformanceTests

4. FM Frequency Response

This automated test veriﬁes the FM frequency response speciﬁcations. The equipment measures the variations in frequency deviations due to changes in the applied FM rate; dc to 100 kHz. The variations are expressed relative to a reference signal; 1 kHz rate set at 100 kHz deviation, in dB. Each frequency is tested with this sequence:

1. A reference signal is measured.

2. The set deviation is measured for each applied rate change.

3. Each deviation measurement is compared to the reference signal deviation.

The comparison is a calculation of the difference in the deviations relative to the reference rate. The relative value is the FM frequency response.

Recommended Equipment

• HP/Agilent 8902A Measuring Receiver Option 010

• HP/Agilent 8904A Function Generator

Equipment Setup

Figure 4-11 FM Frequency Response Tests Setup

Calibration Guide 4-13

PerformanceTests ESG Family Signal Generators

5. AM Frequency Response

This automated test veriﬁes the AM frequency response speciﬁcations. The equipment measures the variations in modulation depth due to changes in the applied AM rate; dc to 10 kHz. The response is relative to a 1 kHz rate set at the test depth, and expressed in dB. Each frequency is tested with the following sequence:

1. A reference signal is measured.

2. The set depth is measured for each applied rate change.

3. Each depth measurement is compared to the reference signal depth. The comparison is a calculation of the difference in the depths relative to the reference

rate. The relative value is the AM Frequency Response.

Recommended Equipment

• HP/Agilent 8902A Measuring Receiver Option 010

• HP/Agilent 8904A Function Generator

• HP/Agilent 8663A Signal Generator

• MD/MDC-164 Mixer (0.5 to 9 GHz)

Equipment Setups

Figure 4-12 Frequency Response for AM ≤ 1300 MHz Test Setup

4-14 Calibration Guide

ESG Family Signal Generators PerformanceTests

5. AM Frequency Response

Figure 4-13 Frequency Response for AM > 1300 MHz Test Setup

Calibration Guide 4-15

PerformanceTests ESG Family Signal Generators

6. Phase Modulation Frequency Response

This automated test veriﬁes the phase modulation frequency response speciﬁcations. The equipment measures the variations in phase deviations due to changes in the applied ΦM rate; dc to 100 kHz. The response is relative to a 1 kHz reference at the same phase deviation, and expressed in dB. Each frequency is tested with the following sequence:

1. A reference signal is measured.

2. The set deviation is measured for each applied rate change.

3. Each deviation measurement is compared to the reference signal deviation. The comparison is a calculation of the difference in the deviations relative to the reference

rate. The relative value is the ΦM frequency response.

Recommended Equipment

• HP/Agilent 8902A Measuring Receiver Option 010

• HP/Agilent 8904A Function Generator

Equipment Setup

Figure 4-14 Phase Modulation Frequency Response Test Setup

4-16 Calibration Guide

ESG Family Signal Generators PerformanceTests

7. DCFM Frequency Offset Relative to CW

This automated test veriﬁes the carrier frequency offset, relative to CW. The equipment measures the RF output frequency. For each test point, a comparison is made between a CW reference frequency without DCFM selected, and then with the DCFM selected; the difference is the carrier frequency offset.

Recommended Equipment

• HP/Agilent 53132A Frequency Counter Option 050

Equipment Setup

Figure 4-15 DCFM Frequency Offset Test Setup

Calibration Guide 4-17

PerformanceTests ESG Family Signal Generators

8. Residual FM (ESG-A and ESG-D only)

This automated test veriﬁes the residual frequency modulation (FM) speciﬁcation. The signal generator’s RF output signal is mixed with a signal from a low noise external LO. The resultant IF signal is demodulated as it passes through the measuring receiver, bypassing the measuring receiver’s internal mixer which is inherently more noisy. Then the audio analyzer measures the demodulated audio signal for an RMS voltage. The measurement is scaled and displayed as RMS mV, but read as residual FM in Hz.

Recommended Equipment

• HP/Agilent 8902A Measuring Receiver Option 010

• HP/Agilent 8903B Audio Analyzer Options 051, 010

• HP/Agilent 8663A Signal Generator

• MD/MDC-174 Mixer (1 to 2800 MHz)

• MD/MDC-164 Mixer (0.5 to 9 GHz)

Equipment Setups

Figure 4-16 Residual FM ≤ 2500 MHz Test Setup

4-18 Calibration Guide

ESG Family Signal Generators PerformanceTests

8. Residual FM (ESG-A and ESG-D only)

Figure 4-17 Residual FM > 2500 MHz Test Setup

Calibration Guide 4-19

PerformanceTests ESG Family Signal Generators

9. Harmonic, Subharmonic, and Nonharmonic Spurious Signals

These automated tests verify that the harmonic, subharmonic, and nonharmonic spurious signals are within speciﬁcations. The signal generator’s output signal is set to values where harmonic and spurious signal performance problems are most likely to occur. Then the spectrum analyzer checks the level of the various harmonic and spurious signals and compares each measurement to a signal of known frequency and amplitude.

Recommended Equipment

• HP/Agilent 8563E Spectrum Analyzer

• HP/Agilent 8491A/B Attenuator (10 dB) Option 010

Equipment Setup

Figure 4-18 Harmonic, Subharmonic, and Nonharmonic Spurious Signals Tests Setup

4-20 Calibration Guide

ESG Family Signal Generators PerformanceTests

10. Power Level Accuracy

A power meter is used to verify performance over the +13 to –15 dBm range. The absolute power level measured at –10 dBm is used as a reference for all lower level measurements.

For power levels below −15 dBm, a vector signal analyzer is used to make relative power measurements. A low noise ampliﬁer (LNA) and step attenuator are connected in series to control the absolute power level input to the signal analyzer. For power level settings ≥ –60 dBm, the step attenuator is set to approximately cancel the gain of the LNA. Below –60 dBm, the step attenuator is set to 0 dB, which keeps the signal level well above the signal analyzer’s noise ﬂoor.

Relative measurements are accomplished by setting the DUT amplitude. For example: Set the DUT to a speciﬁc frequency, and an amplitude of –10 dBm. For the purpose of this

example, assume the power meter measures –10.1 dBm at these settings. The signal analyzer does a peak search, sets the reference level, and sets the marker to delta mode (0 dB). The DUT amplitude then changes to –20 dBm, and the signal analyzer makes a relative power measurement (assume it to be –10.15 dB). The absolute power measured is –10.1 dBm + (–10.15 dB), or –20.25 dBm.

To determine power level accuracy below –60 dBm, the signal analyzer makes the 0 dB marker delta measurement with the amplitude set to –60 dBm, and all lower level measurements are made relative to this reference. The previously measured error for the –60 dBm setting is then accounted for in the measurement.

Forfrequencies above 2 GHz, an HP/Agilent 8563E signal analyzer is used to downconvert the frequency to 321.4 MHz.

Recommended Equipment

• HP/Agilent 438A Power Meter

• HP/Agilent 8482A Power Sensor

• HP/Agilent 89441A Vector Signal Analyzer

• HP/Agilent 8563E Option 001 Signal Analyzer

• HP/Agilent 8491A/B Option 006 Attenuator (6 dB)

• HP/Agilent 8495G Programmable Step Attenuator (0 to 70 dB)

• HP/Agilent 11713A Step Attenuator Driver

See page 1-4 for Details on the following:

• Low Frequency Noise Ampliﬁer (LNA)

• High Frequency Low Noise Ampliﬁer (LNA)

Calibration Guide 4-21

PerformanceTests ESG Family Signal Generators

10. Power Level Accuracy

Equipment Setups

Figure 4-19 High-Power, Power Level Accuracy Setup

Figure 4-20 Low-Power, Power Level Accuracy (< 10 MHz) Setup

4-22 Calibration Guide

ESG Family Signal Generators PerformanceTests

10. Power Level Accuracy

Figure 4-21 Low-Power, Power Level Accuracy (≥ 10 MHz and ≤ 2 GHz) Setup

Figure 4-22 Low-Power, Power Level Accuracy (> 2 GHz) Setup

Calibration Guide 4-23

PerformanceTests ESG Family Signal Generators

11. Timebase Aging Rate (ESG-AP, ESG-DPor Option 1E5 only)

11. Timebase Aging Rate (ESG-AP, ESG-DP or Option 1E5 only)

This manual test veriﬁes the accuracy of the signal generator’s internal timebase. The time required for a 360° phase change is measured both before and after a speciﬁed waiting period. The aging rate is inversely proportional to the absolute value of the difference in the measured times. The results of this test can be recorded on the test record provided on page 4-48.

The overall accuracy of the internal timebase is a function of: TBC ±AR ±TE ±LE where: TBC = timebase calibration AR = aging rate TE = temperature effects LE = line effects After the timebase is adjusted, the timebase frequency should stay within the aging rate

for the following situations:

• The timebase oven does not cool down.

• The instrument keeps the same orientation, with respect to the earth’s magnetic ﬁeld.

• The instrument stays at the same altitude.

• The instrument does not receive any mechanical shock. If the timebase oven cools (the instrument power switch is set to off), you may have to

readjust the timebase frequency after a new warm-up cycle. Typically, however, the timebase frequency returns to within ±1 Hz of the original frequency.

NOTE The internal timebase can be tested after the AC power is reconnected for 10

minutes. For best accuracy, retest after the instrument has been on for 24 hours.

Frequency changes due to either a change in orientation, with respect to the earth’s magnetic ﬁeld, or to a change in altitude usually go away when the instrument is returned to its original position. A frequency change due to mechanical shock usually appears as a ﬁxed frequency error.

Recommended Equipment

• HP/Agilent 54610B Digital Oscilloscope

• HP/Agilent 5071A Primary Frequency Standard

4-24 Calibration Guide

ESG Family Signal Generators PerformanceTests

11. Timebase Aging Rate (ESG-AP,ESG-DPor Option 1E5 only)

Equipment Setup

Figure 4-23 Timebase Aging Rate Test Setup

Procedure

1. Preset all instruments and let them warm up for at least one hour.

2. If the oscilloscope does not have a 50Ω input impedance, connect channel 1 through a 50Ω feedthrough.

3. On the oscilloscope, adjust the external triggering for a display of the 10 MHz REF OUTPUT signal from the synthesizer.

a. On Channel 1 of the oscilloscope, set the following:

• Display: On

• Volts/Division: 500 mV

• Input Coupling: dc

• Input Impedance: 50 ohms (or use a 50 ohm feedthrough)

b. On Channel 2 of the oscilloscope, set the following:

• Display: Off

• Input Coupling: dc

• Input Impedance: 50 ohms (or use a 50 ohm feedthrough)

c. On the Timebase of the oscilloscope, set the following:

• Time/Division: 5 ns

d. On the Trigger of the oscilloscope, set the following:

• Trigger Source: CH 2

• Trigger Mode: Normal

• Trigger Level: 0 V

Calibration Guide 4-25

PerformanceTests ESG Family Signal Generators

11. Timebase Aging Rate (ESG-AP, ESG-DPor Option 1E5 only)

4. If the signal drifts a full cycle (360°) in less than 2 minutes, refer to Chapter 5,

“Adjustments,” and perform the “Internal Reference Oscillator Adjustment.” After the

adjustment, restart this performance test.

5. Watch the oscilloscope display and monitor the time. Notice the time required for a 360° phase change and record this time as T1.

6. Wait 3 to 24 hours. Record the time that you waited as T2.

7. Repeat steps 1 through 6. Notice the time required for a 360° phase change and record this time as T3.

8. Calculate the aging rate as follows: Aging Rate = (1 cycle/10 MHz) (1/T1 − 1/T3) (24 hours/T2) Example: T1 = 351 seconds T2 = 3 hours T3 = 349 seconds

-11

= (1 cycle/10 MHz) (1/351s − 1/349s) (24h/3h)(1.306 × 10

per day)

9. Write the test results on the performance test record located at the end of this chapter. Compare the results to the limits in the test record.

NOTE If the absolute frequency of the standard and the timebase oscillator are

extremely close, you can reduce the measurement time (T1 and T3) by measuring the time required for a phase change of less than 360°. In step 4, change 1 cycle to 0.5 cycle for 180°, or 0.25 cycle for 90°.

4-26 Calibration Guide

ESG Family Signal Generators PerformanceTests

12. Digital Modulation Level Accuracy

This automated test veriﬁes the level accuracy of the signal generator’s I and Q modulation inputs. Two arbitrary waveform generators provide the I and Q modulation inputs to the signal generator. A power meter measures the RF output power with and without QPSK modulation applied to the signal generator. The difference in power measurements is the level accuracy. The QPSK modulation is loaded into the two arbitrary waveform generators from a data ﬁle in the performance tests software. The vector signal analyzer veriﬁes the arbitrary waveform generator’s outputs are properly scaled and synchronized before the relative power level accuracy is measured.

Recommended Equipment

• HP/Agilent 438A Power Meter

• HP/Agilent 8482A Power Sensor

• HP/Agilent 33120A Option 001 Arbitrary Waveform Generator (2)

• HP/Agilent 89441A Options AY7, AY9, AYA, UFG or UTH Vector Signal Analyzer

Equipment Setup

Figure 4-24 Digital Modulation Level Accuracy Test Setup

Calibration Guide 4-27

PerformanceTests ESG Family Signal Generators

13. Internal Digital Modulation Quality

NOTE This test is only required for instruments with UN3, UN4, or UN8. This automated test veriﬁes the RF modulation quality of the signal generator’s internal

I/Q modulation. A vector signal analyzer is connected to the signal generator’s RF output. The internal baseband generator modulates the RF carrier in each of the available digital modulation formats. The vector signal analyzer measures the appropriate error parameter for the modulation generated (EVM for PHS, PDC and NADC formats; global phase error for GSM format).

Recommended Equipment

• HP/Agilent 89441A Options AYA, AY9, UFG or UTH Vector Signal Analyzer

Equipment Setup

Figure 4-25 Internal Digital Modulation Quality Test Setup

4-28 Calibration Guide

ESG Family Signal Generators PerformanceTests

14. Custom I/Q RF Modulation Quality (Option UN8 only)

This automated test veriﬁes the RF modulation quality of the Option UN8 signal generator’s internal real time I/Q baseband modulation. A vector signal analyzer is connected to the signal generator’s RF output. The Option UN8 internal baseband generator modulates the RF carrier in each of the TDMA digital modulation formats. The parameters of the individual TDMA formats common to Options UN3, UN4 and UN8 are tested elsewhere. The vector signal analyzer measures the appropriate error parameter for the modulation generated:

• EVM for QPSK, π/4DQPSK, and QAM16

• Phase error for MSK

• Frequency Shift Error (%) for FSK2

Recommended Equipment

• MD/MDC-174 Mixer (0.001 to 2.8 GHz)

• HP/Agilent 8663A Signal Generator

• HP/Agilent 89441A Options AY9, AYA, AYH, UFG or UTH Vector Signal Analyzer

Equipment Setups

Figure 4-26 Custom I/Q RF Modulation Quality ≤ 2000 MHz Test Setup

Calibration Guide 4-29

PerformanceTests ESG Family Signal Generators

14. Custom I/Q RF Modulation Quality (Option UN8 only)

Figure 4-27 Custom I/Q RF Modulation Quality > 2000 MHz Test Setup

Procedure

1. Connect the equipment as shown in Figure 4-26 on page 4-29.

2. Preset all of the equipment.

3. Follow the instructions as they appear on the controller’s display.

4-30 Calibration Guide

ESG Family Signal Generators PerformanceTests

15. I/Q Modulation Quality (Options UN3, UN4 & UN8)

This test measures the accuracy of the rear-panel I and Q output signals created by the internal baseband generator in Option UN3, UN4, or UN8 signal generators. The vector signal analyzer is conﬁgured to measure the I and Q baseband signals and demodulate each modulation type separately.

Recommended Equipment

• HP/Agilent 89441A Vector Signal Analyzer

Equipment Setup

Figure 4-28 I/Q Modulation Quality Test Setup (Options UN3, UN4, & UN8)

Procedure

1. Connect the equipment as shown in Figure 4-28.

2. Preset all of the equipment.

3. Follow the instructions as they appear on the controller’s display.

Calibration Guide 4-31

PerformanceTests ESG Family Signal Generators

16. Pulse Modulation On/Off Ratio

This automated test veriﬁes the pulse modulation on/off ratio. The signal generator is conﬁgured for an external pulse input. The spectrum analyzer measures the RF output power with and without the external pulse applied. The power difference is the on/off ratio.

NOTE This test does not test the high performance pulse circuitry used in

Option 1E6 instruments. See “20. Pulse Rise/Fall Time (Option 1E6 only)” on page 4-36.

Recommended Equipment

• HP/Agilent 8563E Spectrum Analyzer

• HP/Agilent 8491A/B Option 010 Attenuator (10 dB)

• HP/Agilent 33120A Arbitrary Waveform Generator

Equipment Setup

Figure 4-29 Pulse Modulation On/Off Ratio Test Setup

4-32 Calibration Guide

ESG Family Signal Generators PerformanceTests

17. Burst Modulation On/Off Ratio (ESG-D only)

This automated test veriﬁes the burst modulation on/off ratio. The signal generator is conﬁgured for an external burst input. The spectrum analyzer measures the RF output power with and without the external burst applied. The power difference is the on/off ratio.

Recommended Equipment

• HP/Agilent 8563E Spectrum Analyzer

• HP/Agilent 8491A/B Option 010 Attenuator (10 dB)

• HP/Agilent 33120A Arbitrary Waveform Generator

Equipment Setup

Figure 4-30 Burst Modulation On/Off Ratio Test Setup

Calibration Guide 4-33

PerformanceTests ESG Family Signal Generators

18. CDMA Adjacent Channel Power (Option UN5 only)

This automated test veriﬁes the energy at an offset to the main channel relative to the total energy in the main channel. Post-processing averaging techniques are used to improve repeatability.

Recommended Equipment

• HP/Agilent 8563E Spectrum Analyzer

• HP/Agilent 8491A/B Option 010 Attenuator (10 dB)

Equipment Setup

Figure 4-31 Adjacent Channel Power Test Setup (Option UN5)

4-34 Calibration Guide

ESG Family Signal Generators PerformanceTests

19. Alternate Timeslot Power Settling Time (OptionUNA only)

19. Alternate Timeslot Power Settling Time (Option UNA only)

This test measures the time required for a waveform envelope to settle within the tolerance of its ﬁnal amplitude after a sharp amplitude transition provided by the Alternate Timeslot Power feature (Option UNA). Settling time is the result of heating and cooling effects in the step attenuator and ALC loop. The rise and fall response times of the ALC loop and each attenuator segment is characterized and combined to construct the settling curve for any arbitrary transition.

Recommended Equipment

• HP/Agilent 8563E Option 007 Spectrum Analyzer

• HP/Agilent 8491A/B Option 010 Attenuator (10 dB)

Equipment Setup

Figure 4-32 Alternate Timeslot Power Settling Time Test Setup (Option UNA)

Procedure

1. Connect the equipment as shown in Figure 4-32.

2. Preset all of the equipment.

3. Follow the instructions as they appear on the controller’s display.

Calibration Guide 4-35

PerformanceTests ESG Family Signal Generators

20. Pulse Rise/Fall Time (Option 1E6 only)

This test checks the rise/fall time performance of the RF carrier when pulse modulated by way of the PULSE IN path. The oscilloscope captures the rising or falling edge of the RF pulse envelope, and calculations are made from the digitized data. Transition time calculated is for the 10% to 90% portion of the envelope.

Recommended Equipment

• HP/Agilent 54750A Digitizing Oscilloscope

• HP/Agilent 54751A or 54752A Plug-in

• HP/Agilent 33120A Function Generator

• HP/Agilent 8491A/B Opt 010 Attenuator (10 dB)

• HP/Agilent 8491A/B Opt 020 Attenuator (20 dB)

Equipment Setup

Figure 4-33 Pulse Rise/Fall Time Setup (Option 1E6)

4-36 Calibration Guide

ESG Family Signal Generators PerformanceTests

21. Measuring Phase Noise and Residual FM (ESG-AP and ESG-DP Series Signal Generators)

The signal generator’s automated performance tests do not include a test for either phase noise or residual FM. These tests must be done separately and the results attached to the test results obtained with the performance test software. Either output a plot for each measured frequency, or copy the data onto the test record provided on page 4-48.

Measure phase noise and residual FM on an HP/Agilent E5500 system or its equivalent, at

0.5, 1, 2, 3, and 4 GHz as applicable to the model under test.

Measuring Phase Noise

Because of the excellent phase noise performance of ESG-P series signal generators, a special procedure and extensive equipment is required. The recommended method is to use an HP/Agilent E5500 series phase noise measurement system. This system is recommended over the older HP/Agilent 3048 system due to speed issues and the fact that the older system can not directly measure residual FM. Most of the rest of this discussion refers to the E5500 system, although the principles apply to both.

The limitation of any measurement of phase noise is that the resulting measurement can never be better than the phase noise of the source used to down-convert the signal. In an E5500 system this source is typically either an HP/Agilent 8644B or an HP/Agilent 8662A/63A. Both have advantages and disadvantages. The 8644B has better phase noise above 10 kHz from the carrier, while the 8662/3 has better close-in phase noise, but is worse above 10 kHz. Other sources may have different characteristics. To fully characterize a signal generator to a high degree of accuracy, both sources may be needed.

The following sections illustrate three different measurements of the same device under test (DUT):

• “Using an HP/Agilent 8644B” on page 4-38

• “Using an HP/Agilent 8663A Synthesizer” on page 4-39

• “Using Electronic Frequency Locking (EFC)” on page 4-40

Calibration Guide 4-37

PerformanceTests ESG Family Signal Generators

21. Measuring Phase Noise and Residual FM (ESG-AP and ESG-DP Series Signal Generators)

Using an HP/Agilent 8644B

Figure 4-34 shows the phase noise results of the DUT using the 8644B as the

down-converting source. Note that while it has excellent phase noise above 10 kHz, the results below 10 kHz rapidly degrade. The 60 Hz related noise spikes are typically due to the DCFM method of phase locking the DUT to the E5500.

Figure 4-34

4-38 Calibration Guide

ESG Family Signal Generators PerformanceTests

21. Measuring Phase Noise and Residual FM (ESG-AP and ESG-DP Series Signal Generators)

Using an HP/Agilent 8663A Synthesizer

Figure 4-35 shows the results of the same DUT measured with a 8663A Synthesizer. In

this measurement, the DCFM method was also used to phase lock the DUT to the E5500 system. Again, this produces 60 Hz-related spikes as well as other spurs at 20 and 100 kHz. Notice that the phase noise above 10 kHz is also worse than with the HP/Agilent 8644B. The DCFM method of testing phase noise with an HP/Agilent 8662/3 should not be used.

Figure 4-35

Calibration Guide 4-39

PerformanceTests ESG Family Signal Generators

21. Measuring Phase Noise and Residual FM (ESG-AP and ESG-DP Series Signal Generators)

Using Electronic Frequency Locking (EFC)

Figure 4-36 shows the result of using the electronic frequency control (EFC) method of

phase-locking the DUT to the E5500 system (see the E5500 manual for set up). This method produces the best result, but is not available on all sources (such as the HP/Agilent 8644B). Note that the close-in phase noise is now much improved and the 60 Hz related spikes are eliminated. Although the two large spikes still exist, they are the result of the HP/Agilent 8662/3 and are not characteristics of the DUT.

Figure 4-36

To get an accurate idea of the actual phase noise of the DUT, it may be necessary to combine the two plots, always using the lowest result of both (see Figure 4-37). Keep in mind that the actual phase noise results are probably better than what is displayed.

The results shown on the E5500 system may be worse than the actual DUT. If a tested device has the same phase noise characteristics as the system’s down-converting source, the displayed result will be 3 dB worse than either device. Toeliminate this error,measure three different sources. This results in three equations and three unknowns, and the software can then sort out the actual results for each device. This 3-source substitution method generates a correction table that can be used for future measurements, effectively eliminating the combined error (of up to 3 dB) for subsequent measurements. For best results, use this method. Refer to the E5500 documentation for instructions on how to implement a 3-source substitution. When the plots in this section were taken, this method was not used. If it had been used, portions of the plots could have been up to 3 dB better.

Another way of stating the above: for any phase noise measurement where a 3-source substitution is not performed, the actual phase noise of one of the two sources involved (DUT or down-converting source) is at least 3 dB better than shown.

4-40 Calibration Guide

ESG Family Signal Generators PerformanceTests

21. Measuring Phase Noise and Residual FM (ESG-AP and ESG-DP Series Signal Generators)

Figure 4-37

Measuring Residual FM

Residual FM is closely related to phase noise. Good phase noise typically implies good residual FM. Directly measuring residual FM at very low levels is difﬁcult, but the HP/Agilent E5500 system can integrate the phase noise results to determine an accurate value. This is done under the E5500 software Trace Integration menu by selecting a data type of

In the ESG-P series, residual FM is deﬁned only within a 300-3000 Hz bandwidth and with a speciﬁed frequency response within this band. That frequency response is speciﬁed by a CCITT ﬁlter characteristic. In the E5500 system, software revision 5.0 or higher, use of this ﬁlter response can be achieved by simply checking the the

If you use the older HP/Agilent 3048 phase noise system, there is no direct way to measure residual FM, but because residual FM and phase noise are so closely related and interdependent, it is safe to assume that if the DUT’s phase noise meets speciﬁcation, looks typical (between 300 and 3000 Hz), and shows no unexpected large spikes in the response, then it will most likely also meet the residual FM speciﬁcation.

Snu(f) or Spectral density of frequency fluctuations.

CCITT weighting box under

Trace Integration menu.

Calibration Guide 4-41

PerformanceTests ESG Family Signal Generators

22. Dual Arbitrary Waveform Generator Check (OptionUND only)

22. Dual Arbitrary Waveform Generator Check

(Option UND only)

This check veriﬁes the functionality of the dual arbitrary waveform generator. A triangular waveform is downloaded into the signal generator and then output to the rear-panel I and Q outputs. An oscilloscope is used to monitor the rear-panel I and Q outputs.

NOTE This is not a performance test. This check is only provided to ensure that the

dual arbitrary waveform generator is operational. The results are veriﬁed visually on the oscilloscope, and there is no data that is automatically logged or that can be printed out.

Recommended Equipment

• An oscilloscope with 2 input channels

Equipment Setup

Figure 4-38 Dual Arbitrary Waveform Generator Setup (Option UND)

Procedure

1. Connect the test equipment as shown. The oscilloscope is not connected to GPIB; this allows for the use of most general 2-channel oscilloscopes.

2. Set the oscilloscope to display both Channel 1 and Channel 2. Set the oscilloscope to trigger on Channel 1. The recommended settings are:

• Vertical Scale: 500 mV/div

• Timebase: 5 microseconds/div

4-42 Calibration Guide

Agilent E4431B Data Sheet

Specifications and Main Features

Frequently Asked Questions

User Manual

1Equipment Required

Required Equipment

Equipment Required

1. Power On the Signal Generator

2. Check for Error Messages

3. Frequency Range and Accuracy Check

4. Power Level Accuracy Check

5. FM Accuracy Check

6. AM Accuracy Check

7. I/Q Modulation Check (ESG-D Only)

Test Tables

3Service Software

Required Test Equipment

Installing the ESG_B or ESG_APDP Service Software

Uninstalling the Software

ESG Family Support Software Administration

Administering the Service Support Software

Running the Service Support Software

Starting the Software

Identifying the DUT

Selecting Performance Tests or Adjustments and the Test Equipment

Running the Tests and Adjustments

Reviewing the Test and Adjustment Results

Printing the Test and Adjustment Results

Exiting the Software

Support Software

Exiting the Support Software Program

1. Internal FM Accuracy and Distortion

Recommended Equipment

Equipment Setup

2. Internal AM Accuracy and Distortion

Recommended Equipment

Equipment Setups

3. Phase Modulation Accuracy and Distortion

Recommended Equipment

Equipment Setup

4. FM Frequency Response

Recommended Equipment

Equipment Setup

5. AM Frequency Response

Recommended Equipment

Equipment Setups

6. Phase Modulation Frequency Response

Recommended Equipment

Equipment Setup

7. DCFM Frequency Offset Relative to CW

Recommended Equipment

Equipment Setup

8. Residual FM (ESG-A and ESG-D only)

Recommended Equipment

Equipment Setups

Recommended Equipment

Equipment Setup

10. Power Level Accuracy

Recommended Equipment

Equipment Setups

11. Timebase Aging Rate (ESG-AP, ESG-DP or Option 1E5 only)

Recommended Equipment

Equipment Setup

Procedure

12. Digital Modulation Level Accuracy

Recommended Equipment

Equipment Setup

13. Internal Digital Modulation Quality

Recommended Equipment

Equipment Setup

Recommended Equipment

Equipment Setups

Procedure

15. I/Q Modulation Quality (Options UN3, UN4 & UN8)

Recommended Equipment

Equipment Setup

Procedure

16. Pulse Modulation On/Off Ratio

Recommended Equipment

Equipment Setup