412 E8257D/67D, E8663D PSG Signal Generators Service Guide
Post–Repair Procedures
Post–Repair Procedures Matrix
DC FM Carrier Offset (E8257D/E8267D/E8663D
Option UNT)
XX
Internal FM Frequency Response
(E8257D/E8267D/E8663D Option UNT Only)
X X X
Internal Phase Modulation Deviation Accuracy
(E8257D/E8267D/E8663D Option UNT)
XXX
Internal FM Distortion (E8257D/E8267D/E8663D
Option UNT)
X X
Internal Phase Modulation Distortion
(E8257D/E8267D/E8663D Option UNT)
XX
Harmonic Spurious
X X X X X
Sub–Harmonic Spurious
XXX
Non–Harmonic Spurious
X X X X X X
External FM Deviation Accuracy
(E8257D/E8267D/E8663D Option UNT)
XXX
External Phase Modulation Frequency Response
(E8257D/E8267D/E8663D Option UNT without
UNY)
X
X
X
External Pulse Modulation On/Off Ratio
(E8257D/E8267D Option UNU with serial prefix <
4928, UNW, UNS, or HNS, E8663D Option UNW)
XX XX
Single-Sideband Phase Noise (Option UNX or UNY
test procedure)
X X X X X X X
Single-Sideband Phase Noise (Non-Option UNX or
UNY test procedure)
XXXXXX
X
Residual Phase Noise (E8257D/E8267D/E8663D
Option UNX or UNY and without H5Y Only) (Manual
Performance Test)
X X X X X X X
Internal EVM Digital Modulation Quality (E8267D
Option 601 or 602 Only)
X
XX
Digital Modulation Power Relative to CW (E8267D
Only)
X X X
Swept Frequency Accuracy
(E8257D/E8267D/E8663D Option 007)
X
X
Table 4-10 Performance Tests: Assemblies A1—A17 (For prefixes >= xx4928) (Continued)
Performance Tests
The
following performance tests are listed in the
order that they should be performed to minimize
changes in test equipment configurations.
Replaced Assembly
A1 Keyboard
A2 Display
A2DS1 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
A12 Lowband Fast Pulse
A13 IQ Multiplexer
A14 Baseband Generator
A17 Baseband Generator Interface
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