Index
Index 683
fractional N
divider
, 566
oscillator
, 551
phase noise
, 576
span problems
, 572
troubleshooting
, 531
fractional N PLL
, 359, 561
unlocked
, 560
frequency control (A14) assembly
removal
, 231
frequency control (A14) assembly
replacement
, 232
frequency control assembly
troubleshooting
, 612
frequency control block diagram
,
581
frequency counter
, 505, 507
frequency counter
prescaler/conditioner
troubleshooting
, 448
frequency-count marker
problems
, 503, 504
front end cal
adjustment
, 73
front frame
removal
, 191
replacement
, 197
front frame parts
, 283, 293
front frame(EC), assembly
, 180
G
general information
serial number label description
,
30
graticule problem
, 499
H
harmonic number versus center
frequency
, 569
high and low band problems
, 601
high band problems
, 600
high voltage power supply
adjustment
, 99
I
IF adjustment, automatic
, 438
IF amplifier
, 356
IF amplitude
adjustment
, 75
IF amplitude adjustments
, 116,
164
IF assembly
, 360
IFassemblytroubleshooting
,437,
455
IF bandpass adjustment
, 110
IF bandpass poles
adjustment
, 74
IF filter troubleshooting, 10.7
MHz
, 450
IF filter troubleshooting, 4.8 kHz
,
449
IF filter troubleshooting, 4.8 kHz
and 10.7 MHz
, 450
IF filter, 4.8 kHz and 10.7 MHz
problems
, 450
IF gain uncertainty performance
test failures
, 441
IF parameters adjusted
, 438
IF section
, 359
IF section general
troubleshooting
, 428
IF signature problems
, 462
IF signature troubleshooting
, 456
input attenuator
, 354, 605
removal and replacement
, 224
input switch problems
, 451
instrument variations
, 29
intensity adjustments
, 106
intensity problems
, 498
interface section
, 360
interface strobe troubleshooting
,
409
internal assemblies, accessto
, 177
isolation amplifier problems
, 453
J
jumper
write protect/enable
, 322
K
keyboard
problems
, 382, 516
L
LC filter adjustments
, 112
LCD (EC), assembly
, 180
LCD, display
, 635
LCD, simplified block diagram
,
636
LCD, troubleshooting the
, 637
limiter phase adjustment
, 171
limiter problems
, 453
line generator
, 491, 495
line switch (E), assembly
, 244
line switch (EC), assembly
, 183
line switch cable
removal
, 244
replacement
, 250
linear amplifier troubleshooting
,
444
linear fidelity adjustment
, 124,
172
lines dim
, 499
LO distribution amplifier
, 551
removal and replacement
, 222
LO Multiplier/Amplifier
removal and replacement
, 222
LO multiplier/amplifier
, 354
LO multiplier/amplifier
adjustments
, 68
LO multiplier/amplifier
troubleshooting
, 602
LO span problems
, 572, 573
LO switch troubleshooting
, 452
Log amplifier
, 359
log amplifier
adjustments
, 121
detector/mixer troubleshooting
,
453
failures
, 443
input switch troubleshooting
,
451
isolation amplifier
troubleshooting
, 453
limiter troubleshooting
, 453
troubleshooting
, 443
log expand functions
, 361
log expand troubleshooting
, 393
log fidelity adjustment
, 124, 173
log gain compensation
troubleshooting
, 453
log offset compensation
troubleshooting
, 453
log offset troubleshooting
, 393
LOMA
, 354
adjustments
, 68
removal and replacement
, 222
troubleshooting
, 602
low and high band problems
, 601
low band mixer
, 604
removal and replacement
, 223
low band mixer (serial prefix
3641A)
, 354
low band problems
, 599
low-pass filter troubleshooting
,
478
M
main chassis parts
, 279, 288
main coil
, 558
manufacturers code list
, 265
marker problems
, 503, 504
mechanical parts
, 279, 288
mixer amplitude adjustment
, 147
mixer bias adjustment
, 145
mixer/detector log amplifier
troubleshooting
, 453