Wavetek 143 Instruction Manual page 27

VCG CHECK
PLACE ALL CON-
> - - - - - - - - - - - T R O L S IN INITIAL'
POSITIONS
+15VdcTO APPROX
+150mVdcATE4AS NO
<DIAL IS ROTATED
>-------91
FROM 2.0 TO .02
7
; : E S
0 Vdc
±s
mV
<
AT IC1·2 AS DIAL>_N_O _ _ _ _ _ _ _
IS ROTATED ..
?
·I
XYES
-5 TO-o Vdc
NO
<
ATIC1 -6ASDIAL)
IS ROTATED
>--------91
·I
FROM 2.0 TO .02
~YES
+10 TO +14.95 Vdc
AT IC4-3 AS DIAL IS
NO
< ROTATED FROM
>-------91
2.0 TO .02
7
::tES
-10 TO -14.95 Vdc
CHECK
DIAL& E3-E5
WIRING
CHECK
IC1 CIRCUIT
CHECK
IC1 CIRCUIT
CHECK
IC2, 01 & 02
CIRCUITS
AT IC5-3 AS DIAL IS NO
<
ROTATED FROM
> - - - - - - - - - - - - - '
2.0 TO .02
iYES
+10T0~5Vdc
AT EMITTER 04 AS
NO
<DIAL IS ROTATED
> - - - - - - - . . i
FROM 2.0 TO .02
7
RES
CHECK -10TO -14.95 Vdc
CR6 CR9 & CR26 YES AT EMITTER 06 AS NO
IN~EGRATOR
l..o..,.....->--------c
DIAL IS ROTATED
>-------~
CIRCUITS FROM 2.0 TO .02
--J,
·~YMMETRY
TO OFF, FREQ VERNIER TO CAL. OIAL TO 2.0. ALL OTHERS TO 12 O'CLOCK
.. USE SCOPE AND HIGH IMPEOANCE PROBE FOR THIS ANO SUBSEQUENT VCG MEASUREMENTS
Figure 6-3. VCG Checks, Generator Board
6-4
CHECK
IC4,Q3 & 04
CIRCUITS
CHECK
ICS.
as
& 06
CIRCUITS