Wavetek 145 Instruction Manual page 16

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MODEL 145 OSCILLOSCOPE
[
D
FUNC OUT
CH 1
FUNCTION GENERA
TR
J_
l
1
SYNC OUT
I
IG
TRIGj
CH 2
N
OUTPUT(
)
TOR
J
. Figure 2-2. Second Setup
Table 2-1. Acceptance Procedure (Continued)
Control Position/Operation Observe
Set up a trigger source as shown in figure
2-2.
Trigger on triangle waveform. Set trigger source at 100 Hz
I\;
TRIGGER LEVEL
GENERATOR MODE
Rotate knob. Set for several
cycles.
TRIG
Knob varies number of cycles gated.
One cycle per trigger cycle.
TRIGGER START/STOP Rotate knob, then to 0° CAL. CW starts sine wave at +90°; ccw starts sine wave
at -90°. Fully cw gives continuous sine waves.
NOTE: Select square wave on trigger source.
FUNCTION
PULSE
DC level (minus).
PULSE WIDTH Turn cw to
100
µs I
1
ms. Pulse appears.
PULSE WIDTH VARIABLE Rotate, then to
12
o'clock
CW increases pulse width; ccw decreases pulse
width.
FUNCTION PULSE, then PULSE. Pulse direction reverses; de levels remain the
same values.
NORMAL/DOUBLE/ DELAYED No change.
DELAYED Switch
PULSE DELAYED
100µ,s11 ms
Small horizontal shift.
PULSE DELAYED VARIABLE Turn knob.
Pulse moves horizontally.
NORMAL/DOUBLE/
DOUBLE No change.
DELAYED Switch
PULSE DELAYED VARIABLE Turn knob to resolve two pulses. Double pulse appears.
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