Wavetek 143 - Page 24

Table 5-1. Calibration Chart
Desired
Results
Control
Settings
Remarks
Cal
Check Tester Points
Power DVM СЛИ
Supply
C112
Steps 3 - 7 are on the trig/pulse board. Place the cover on the generator and turn it upright. Remove the top cover for access
to the trig/pulse board.
+15 +0.05 Vdc
If voltage is incorrect,
proceed to step 3.
-15 +0.05 Vdc If voltage is correct,
proceed to step 9.
TP1 (COM) +15 +0.02 Vdc
TP2
(115 Vdc)
—15 +0.05 Vde
Va | +1 Vdc
ES +1 Vdc
| 02e | +0.2 Vdc
If steps 3 - 7 were performed, place the cover on, invert the generator and warm up the generator for % hour. Remove the
uppermost cover for generator board access when required.
8 Cap DVM TP5 (COM) <5mV
Mult (DCV) Πρι
Balance
9 Power FUNC- 0 50.01 Уас Terminate with 509,
Ampl TION load.
Balance OUT
10 Preamp ATTENUATION R252 0 50.01 Vdc
Ва!апсе
VERNIER: full cw
11 VCG Scope FUNCTION: 1 R12 Minimum fre- Observe one cycle at
Null quency shift 50us/div. Alternately
short and open VCG
IN BNC while adjust-
ing R12.
12 1000:1 ΕΒΕΟ VERNIER: R13 < 1 cycle Scope on .5 ms/div.
Freq full ccw BOD (< 200 Hz)
Freq
Adj
5-2