Keysight Technologies E8257D User Manual

404 E8257D/67D, E8663D PSG Signal Generators Service Guide
Post–Repair Procedures
Post–Repair Procedures Matrix
High Band ALC Modulator Calibration X
Low Band ALC Modulator Calibration X
IQ Gain/Offset/Quadrature Calibration X
Target IQ Power Calibration X X
1/f Corner Calibration X
IQ Time Skew RF X X
IQ Time Skew Baseband XX
ALC Dynamic Calibration X X X X
Upconverter Gain Adjustment Calibration X
High Band Power Flatness Calibration X X X X X
Low Band Power Flatness Calibration XXXXX
V-Band Power Flatness Calibration X X X X X
V-Band Low Power Attenuator Accuracy Calibration XX
Low Power Attenuator Accuracy Calibration X X
Lowband Filter Offset Calibration X
IQ Power Floor Calibration X X
Low Band IQ Power Floor Calibration
ALC Modulator Calibration X
ALC Mod Bias DAC Sensitivity Calibration XXX
AM Gain Calibration X
IQ Impairment Calibration X
Pulse Width Calibration X
Attenuator Cycle Count Reset (Service Software - Utility) X
Table 4-4 Post-Repair Adjustments: Assemblies A1—A11 (For prefixes >= xx4928)
Adjustments Replaced Assembly
The following adjustments are listed in the order that they should
be performed for proper calibration.
A1 Keyboard A2 Display A2DS1 Display Backlight A3 Power Switch A4 Inverter A5 Sampler A6 Frac-N A7 Reference (Standard) A7 Reference (Option UNR/UNX) A8 Output (Analog) A8 Output (Digital) A9 YIG Driver A10 ALC A11 Pulse/Analog Mod Gen
ADC Calibration X X X X X X X X X
YIG–Driver Pre–Tune Calibration X
VCO Bias Frac–N Calibration X
Internal Source Cal (E8257D/E8663D with Option UNT) X
AM Audio Path Offset Cal (E8257D/E8663D with Option UNT) X
KV vs. Frequency Calibration X
Table 4-3 Post Repair Adjustments:
Assemblies A27—A40, AT1, B1, and RF Output Connector (For Prefixes <
xx4928) (Continued)
Adjustments Replaced Assembly
The following adjustments are listed in the order that they
should be performed for proper calibration.
A27 40 GHz Doubler A28 YIG Oscillator A29 20 GHz Doubler A30 Mod Filter A31 Motherboard A32 10 MHz Crystal Oscillator A34 Internal Hard Drive A35 3 − 20 IQ Modulator
A36 Quadraplier A37 Up Converter A38 Lowband Switch Filter A39 Directional Coupler A40 Flash Drive AT1 115 dB Attenuator B1 Fan RF Output Connector

Keysight Technologies E8257D Specifications

General

Brand	Keysight Technologies
Model	E8257D
Category	Portable Generator
Language	English