Operating instructions

University of Saskatchewan
Electrical Engineering Laboratory Equipment Manual
The Wavetek Model 180 is an easy-to-use sig gen. Its frequency range is 0.2 Hz
– 2.0 MHz. The output is taken from either the LO or HI output connector. There is a
difference of 20 dB in signal level between the two.
The operation of this sig gen is very similar to the others already discussed and
so will not be repeated here. However, in order to be used as a simple signal source,
the SWEEP WIDTH knob must be rotated fully counterclockwise to the OFF position. If
it is not off, the output will be a swept wave.
If a TTL square wave is required, simply connect to the PULSE OUT (TTL)
connector.
There is another Wavetek sig gen available in the labs, the Model 185. It is
similar in appearance to the Model 180, except that it has two large frequency adjust
knobs.
Interstate P25 Pulse Generator
The Interstate P25 is used strictly for generating square waves or square pulses.
It has a frequency range of 1 Hz – 50 MHz. Admittedly, this generator is rather
intimidating, but it is really quite simple to use once you get used to it. The reason the
P25 is so intimidating is that every aspect of the output pulses is controllable by the
user. Everything from the amplitude of the output pulses to their rise and fall times is
adjustable.
For normal operation, the function select switch at the top left corner of the front
panel should be set to NORMAL. The output frequency is set by the REPETITION
RATE range and coarse/fine knobs. For normal operation, set the DELAY range and
adjust knobs to their minimum (fully counterclockwise) positions.
The width of the square pulses is controlled by the WIDTH range and adjust
knobs. For most applications, the RISE/FALL TIME range and adjust knobs should be
set to their minimum (fully counterclockwise) positions. The top rise/fall time knobs are
for the positive output, while the bottom set of knobs is for the negative output.
NORMAL
DUTY CYCLE
DBL PULSE
TRIGGER
TRIGGER
DBL PULSE
GATE
PULSE
AMPLIFIER
50 MHz
1 MHz
10 kHz
100 Hz
1 Hz
20ns
1 s
100 s
10ms
1s
1s
10ms
100 s
1 s
10ns
1s
10ms
100 s
1 s
10ns
500ms
5ms
50 s
500ns
5ns
10 V
5 V
1 V
10 V
5 V
1 V
MAX MIN MIN
100:1 100:1

 




MIN
MIN
REPETITION RATE DELAY WIDTH
RISE/FALL
TIME
POSITIVE OUTPUT
NEGATIVE OUTPUT
CLOCK
OUTPUT
SYNC
OUTPUT
INPUT
SLOPE
TRIGGERED
MANUALLEVEL
+ -
AMPLITUDE OFFSET OUTPUT
AMPLITUDE OFFSET OUTPUT
RISE
FALL
RISE FALL
INTERSTATE P25 PULSE GENERATOR
INTERSTATE
ELECTRONICS
CORPORATION
PULSE
GENERATOR
P25
PWR