Wavetek 145 Instruction Manual page 32

Table 5-1. Calibration Chart (Continued)
Cal Control Desired
Step Check Tester Points Settings Adjust Results Remarks
14 1000: 1
Scope
FUNC-
R16 Symmetrical wave-
NOTE: Steps 13 and
Sym-
TION
BOD
form
14 are interactive.
metry
OUT
Sym
15 Main
FREQ VERNIER: R35
Symmetrical wave-
Sym-
full cw TOD
form
metry
Dial: 2.0
Sym
FREQ MULT: 1K
16 Sine Distortion
FUNCTION:
I\;
R120 Symmetrical Connect FUNCTION
Distor- Analyzer, Triangle residue OUT to distortion
tion Scope Balance
analyzer and distor-
tion analyzer output
to scope. Set scope
to .1 V/div. Sync scope
to SYNC OUT BNC
loaded into 50Q.
-
17 R93, Minimum sine If either adjustment is
R107 distortion
going near a stop, re-
Triangle center _both pots and
Peaks
return to step 15.
18 Main
Frequency FUNCTION:~
R4 2000 ±10 Hz Remove
SYNC
OUT
Freq Counter/ TOD cable.
Timer Freq
Adj
19 Cap FREQ MULT: 10 R48 20 ±0.1 Hz
Mult
Freq
20 X 10M FREQ MULT: 10M C40 Best frequency
Freq
Dial: Vary
tracking over
X 10M range
21 X1M FREQMULT: 1M C34 Best frequency This adjustment must
Freq Dial: Vary
tracking over
be made each time
X 1 M range step 20 is done.
22 Trigger Scope FUNCTION:
I\.;
R162 Minimum shift of
Baseline GENERATOR
baseline around
MODE: TRIG 0 Vdc
Dial: Vary
5-3