Wavetek 143 - Page 36

PLACE GENERATOR
MODE TO GATE
(NO TRIG IN INPUT)
& ALL OTHER CON-
TROLS IN INITIAL*
POSITIONS
GENERATOR MODE CHECK
SET TRIG LEVEL
FROMCCWTOCW_ NO
< OF CENTER; IC3-1 >
GOES FROM HIGH
TO LOW 7
YES
CHECK
TRIG SQUARER
CIRCUIT
CHECK
1С2, ІСЗ, SW1-A
& SW4
IC3-8 GOES
FROM HIGH TO LOW
AS TRIG LEVEL IS
OPERATED OR AS
MAN TRIG** IS
DEPRESSED ?
YES
SAME
AT 1С2-10
?
GO TO CONT MODE
GENERA-
TOR RUNNING
?
ERATOR BOARD
P1-1 WIRING
CHECK
IC2 & SW1-B
GO TO GATE MODE
1С2-8 GOES
FROM HIGH TO LOW NO CHECK
< WHEN MAN TRIG 1С2 & TRIG AMPL ON
DEPRESSED GENERATOR BOARD
2
ΒΕΜΟΝΕΡΙ ΤΟ
ο κ ος ISOLATE PROBLEM
CONTINUED
“SYMMETRY TO OFF, FREQ VERNIER TO CAL, DIAL TO 2.0, ALL OTHERS TO 12 O'CLOCK
""RETURN TRIG LEVEL CCW TO OPERATE MANUAL TRIGGER
Figure 6-5. Trigger and Gate Mode Checks, Trig/Pulse Board (Page 1 of 2)
6-6