Wavetek 193 Instruction Manual page 15

2-3
Figure 2·4. Auxiliary Generator Check
AUX
OUT
FUNCTION
~~-+-_~
GENERATOR
SYNC
OUT ~------------------~
Figure 2·3. Checkout Setup
. MODEL 193
OSCILLOSCOPE
D
TRIG
CH1
MODEL 193 NOTE:
Verify scope is properly triggered
(on positive going edge).
AUX SYNC
OUT
(REAR PANEL)
OSCI LLOSCOPE
D
TRIG
CH1 CH2
14 AUX GEN FUNC Rotate to '\; ,
"v ,
'L .
'\; , "v ,
ru
are approximately 10 Vp-p, 3
kHz.
15 Width/~F/~M
Rotate ccw. Return to cw CH1:AUX OUT level varies from approximate-
position. Iy 10 Vp-p to 0 Vp-p.
16 AUX GEN FUNC
Rotate to ./"1,
n., ,
Vary ./"1 and
n.,
are approximately
10 Vp-p,
and SYMMETRY symmetry control. Return to '\; . 300 Hz. Symmetry varies from 19:1 to 1:19.
17 AUX GEN FREQ Rotate VERNIER in all FREQ
Frequency varies in each range to the range
and VERNIER range positions. Return FREQ limits as marked.
range to 100-3K and VERNIER
to cv«.
Return al/ controls to the initial setup. Set up scope and Model
193 as
shown in figure 2-4.
12 TRIG LEVEL Rotate throughout CH1: The number of waveform cycles in each
its range. Return gated "burst" varies with the trigger level.
to 10 o'clock. Notice relationships between Channels 1 and
2 waveforms as the TRIGGER LEVEL is
rotated.
13
MODE Select TRIG
CH1: A single triggered '\; recurring at the
200 Hz trigger rate.
Set up trigger source (200 Hz triangle
1
OVp-p),scope, and Model
193 as
shown in figure 2-3.
Step Control Position/Operation Observation
6 AMPLITUDE Rotate cv«. Waveform returns to 15 Vp-p.
7 OUTPUT Depress buttons in various
Output level varies from 15 Vp-p
ATTN 10, 20, 40 combinations. Then release all (0 dB) to 4.7 mV (70 dB).
buttons.
8
FUNC Select DC, '\; ,
<:
,~
.
Observe 0 Vdc level; '\; ,
<.
and ~
are
(Main Generator) Reset to
"v .
15 Vp-p. Note phase relationships; ~
in phase with '\; and
"v .
9 SYM, Depress SYM switch and rotate Frequency decreases to approximately
VERNIERISYM. VERNIERISYMcontrol ccw.
100 Hz. ccw of the 12 o'clock position gives
Extend SYM, return 1:19; cw gives 19:1 (askewed sine wave and
VERNIERISYMto CAL. variable duty cycle pulses can be observed
for -: and ~ .)
10 MODE and Select GATE. A dc level near zero volts (except ~ func-
FUNC Select '\
,"v
, ru .
tion; quiescent level is at negative peak
(Main Generator) Return to
"v .
value).
11 MANUAL Press, hold and release. A burst of
"v
for the period the MAN TRIG
TRIGGER is depressed.
Table 2·1, Checkout Procedure (cont)