Wavetek 145 Instruction Manual page 46

PLACE GENERATOR
GENERATOR MODE CHECK 1----~-~ai
MODE TO GATE
(NO TRIG IN INPUT)
& ALL OTHER CON-
TROLS IN INITIAL*
CHECK
IC2, IC3, SW1-A
&SW4
YES
NO
YES
POSITIONS
SET TRIG LEVEL
FROM CCW TO CW
<OF CENTER; IC3-1
GOES FROM HIGH
TO'LOW?
rYES
IC3-8 GOES
FROM HIGH TO LOW
AS TRIG LEVEL IS
>
OPERATED OR AS
MAN TRIG** IS
DEPRESSED ?
GO TO CONT MODE
--------<
NO
NO
CHECK
TRIG SQUARER
CIRCUIT
CHECK
SW1-B
CHECK
NO
'>--Y_E_s _ _ _ _ _ ...i.SYNC AMPL ON GEN-
GO TO GA TE MODE
IC2-8 GOES
FROM HIGH TO LOW NO CHECK
<
WHEN MAN TRIG
> - - - - - - - - - 1 9 1
IC2 & TRIG AMPL ON
DEPRESSED GENERATOR BOARD
GO TO TRIG MODE
CONTINUED
REMOVEP1TO
ISOLATE PROBLEM
~NORMAL/DOUBLE/DELAY
SWITCH TO NORMAL, FREQ VERNIER TO CAL,
DIAL TO 2.0, ALL OTHERS TO 12 O'CLOCK
**RETURN TRIG LEVEL CCW TO OPERATE MANUAL TRIGGER
NO
E RA TOR BOARD
P1-1 WIRING
CHECK
IC2 & SW1-B
Figure 6-5. Trigger and Gate Mode Checks, Trig/Pulse Board (Page 1 of 2)
6-10