Wavetek 193 Instruction Manual page 16

2-4
Figure 2·6. AM Check Setup
CH1 CH2 TRIG
o
OSCILLOSCOPE
FUNC
OUT
AUX
OUT
AUX SYNC
OUT
(REAR PANEL)
Figure 2·5. FM and Sweep Check Setup
CH1 CH2 TRIG
FUNC
OUT
SYNC
OUT
AUX
OUT
MODEL 193 OSCILLOSCOPE
18 AUX GEN MODE
Set to SET FREO/AUXGEN OFF. FM center frequency of 1kHz on CH1.
19
AUX GEN FREO FREO range to .1-3 and VERNIER (This sets the rate of modulation.)
Range, VERNIER to 12 o'clock.
20
AUX GEN MODE Select SET ~F and vary Approximately 1.1 kHz.on CH1. This
and WIDTH/~F/~M WIDTH/~F/~M for 1.1 kHz on will be maximum
peak
frequency of
scope. modulated signal.
21
AUX GEN MODE Select FM. Both channels: CH1 frequency varies with in-
stantaneous
amplitude
of AUX OUT
waveform on CH2.
22
AUX GEN FUNC Select /'1 and full ccw rotation. (Ramp's instantaneous amplitude controls
and SYMMETRY sweep: A slow sweep up and fast return to
start frequency.)
23
AUX GEN MODE Select SET START (Ramp is held at its start voltage.)
24 FREO/START Set dial to .02 and VERNIER
CH1: Approximately 2 Hz. (start frequency).
FREO Dial and full ccw.
VERNIERISYM
25 AUX GEN MODE Select SET WIDTH and rotate
CH1: Approximately 2 kHz.
and WIDTH/~F/~M WIDTH/~F/~M cv«. (Max sweep frequency for range).
26 AUX MODE Select SWEEP
Sweep of main generator from 2 Hz to 2 kHz.
(If AUX GEN symmetry is rotated cw, the main
generator sweeps from 2 kHz to 2 Hz.
stepl Control Position/Operation Observation
Set up the Model
193
and scope
as
shown in figure 2-5.
Table 2·1. Checkout Procedure (coni)