E8257D/67D, E8663D PSG Signal Generators Service Guide 193
Replaceable Parts
Assemblies
A28 YIG Oscillator 5087-7739 2-203,
2-204, and
2-206
5087-7739 2-205 and
2-207
A29 20 GHz Doubler 5087-7738 2-206 5087-7738 2-207
A30 Modulation Filter with High Power 5087-7737 2-206 5087-7737 2-207
A31 Motherboard
E8251–60133
a
2-206 N/A
A31 Motherboard N/A E8251-60667 2-207
A32 10 MHz Crystal Oscillator
(for instruments with serial
prefixes ≥ US4805/MY4805)
E8251-60625 2-198,
2-199, and
2-200
E8251-60625 2-201 and
2-202
A32 10 MHz Crystal Oscillator
(Option UNX)
E8251-60626 2-198,
2-199 and
2-200
E8251-60626 2-201 and
2-202
A32 10 MHz Crystal Oscillator
(Option UNY)
E8251–60798 2-198,
2-199 and
2-200
E8251–60798 2-201 and
2-202
A32 10 MHz Crystal Oscillator
(Option UNR – Discontinued)
E8251–60071 2-198,
2-199 and
2-200
E8251–60071 2-201 and
2-202
A33 3.5 6 dB PAD (E8257D Option 521 and E8267D
Option 513 and 520)
08493-60026 2-199 and
2-204
08493-60026 2-201
A33 3.5 10dB PAD (Options 532/544) N/A 08493-60027 2-202 and
2-205
A34 Internal Hard Drive (Option 005 – Discontinued)
(for instruments with serial prefixes < 4829)
N/A E8251–60115 2-202
A35 3–20 GHz I/Q Modulator
(for instruments with serial
prefixes < US4722/MY4722)
N/A 5087–7059 2-207
A35 3–20 GHz I/Q Modulator
(for instruments with serial
prefixes ≥ US4722/MY4722)
N/A 5087-7742 2-207
A36 Quadraplier (Options 550 and 567 only) 5087-7741 2-200 and
2-204
N/A
A37 Upconverter N/A 5087-7740 2-202 and
2-205
Table 2-3
Assembly E8257D and E8663D E8267D
Part Number Page Number Part Number Page Number
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