theory of operation, 12-3
transfer switch, 12-26
test set interface, 12-26
tests menu, 10-3
test status terms, 104
theory of operation, 12-1
+5 V digital supply, 12-6
Al5
green LED, 12-6
Al5
preregulator, 12-5
Al5
red LED, 12-6
A3
source, 12-2, 12-14
A8
green
LEDs,
12-7
A8
post regulator, 12-7
A8
shutdown circuit, 12-7
air flow detector, 12-7
digitai
control, 12-8
display power, 12-8
functional groups, 124
line power module, 12-6
microprocessor, 12-3
peripheral equipment, 12-3
power supply, 12-5
power supply shutdown, 12-6
preregulated voltages, 12-6
probe power, 12-8
receiver, 12-3, 12-28
signal separation, 12-26
source attenuator, 12-2
test set, 12-3
variable fan circuit, 12-7
tool kit, l-3
tools for service, l-l
trace (good) display, 8-5
trace with sampler correction on and
off, 8-13
tracking for source spur avoidance
adjustment, 3-58
transfer switch, 12-26
transmission tracking (ETP and ETR),
11-16
TROUBLE! CHECK SETUP AND
START OVER,
lo-60
troubleshooting
1st
LO signal at sampler/mixer,
8-14
A10
by substitution or signal
examination, 8-8
All phase lock, 7-35
All phase lock and
A3
source
check, 7-8
Al2
reference, 7-13
A13/A14 Fractional-N, 7-24
Al4
Divide-by-N Circuit Check,
7-29
Al5
preregulator, 5-9
Al/A2
front panel, 6-13
A7
pulse generator, 7-32
accessories, 4-18,
9-l
broadband power problems, 7-39
diagnostics, 4-3
digital control,
6-l
disk drive, 47
fan, 5-22
faulty data, 417
faulty group identification, 4-9
tist
step, 41
front panel, 6-13
HP-R3
systems, 46
one or more inputs look good,
8-l
1
phase lock error, 74
plotters or printers, 47
receiver, 8-l
receiver error messages, 4-17
self-test, 43
source, 7-l
start, 41
systems with controllers, 4-8
systems with multiple peripherals,
48
when all inputs look bad, 8-6
Index-23
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