Wavetek 171 - Page 32

REFERENCE SELECTOR
CHECK
SYNTH LOOP DOES
NOT
WORK
WITH
EXTERNAL
REFERENCE
FREQUENCY SOURCE
YES
SELECTOR
FUNCTIONAL
<
BUT
NO
SIGNAL
AT
"REF
OUT"
BNC
~
SYNTH
LOOP DOES
NOT
WORK
WITH
INTERNAL
REFERENCE
FREQUENCY SOURCE
X
100R
<
GREATER
RANGE
&
SYNTH
MODE
7
ILLEGAL
OPERATION
~
1
MHz
EXT
REF
SIGNAL
;;;?;
1
VRMS
SINE,
SQUARE OR
TTL
7
NO
ILLEGAL
OPERATION
PROBLEM IN
IC1
OR,
IF
TTL
BUFFER
'>------11.,.
OPTION
INSTALLED,
ICJJ
CHECK
IC2
CHECK
08,9
CLOCK
KILL
CIRCUIT
CHECK
03,4
CIRCUIT
Figure 6-4. Synthesizer Mode Checks (Sheet 6
of
6)
6-12
REF
SELECTOR
OK
'>-~~--CHECKSYNTHLOOP
(SHEET2)
CHECK
ICG-8
CIRCUIT
CHECK
IC1
&01.2
CLOCK
CIRCUIT
CHECK
IC6-8
CIRCUIT