Avtech AVRF-4A-B, Instructions Manual

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BASIC TEST ARRANGEMENT, WITH A REAL-TIME OSCILLOSCOPE
1. Connect the pulse generator to an oscilloscope using one of the two methods
shown above. Note that:
a) If using a sampling oscilloscope, the use of 60 dB attenuator at the sampling
scope vertical input channel will insure a peak input signal to the sampling
scope of less than 1 Volt. WARNING: This model may provide a peak output
power in excess of 3200 W. The peak power rating of the attenuator should
exceed this limit. Factory tests are conducted using a Midwest Microwave
model ATT-0527-20-SMA-07 attenuator.
b) If using a realtime oscilloscope, a 50 Ohm load must be used to terminate the
output.
c) The SYNC output channel provides TTL level signals (approximately 0 and
+3V). To avoid overdriving the TRIG input channel of some sampling
oscilloscopes, a 20 dB attenuator should be placed at the input to the scope
trigger channel.
d) The bandwidth capability of components and instruments used to display the
pulse generator output signal (attenuators, cables, connectors, etc.) should
exceed 2 GHz.
e) Set the oscilloscope to trigger externally with the vertical setting at 100 mV/div
for sampling oscilloscopes, or 100 V/div for real-time scopes, and the horizontal
setting at 50 ns/div.
2. Turn on the AVRF-4A-B. The main menu will appear on the LCD.
3. To set the AVRF-4A-B to trigger from the internal clock at a PRF of 5 kHz:
24
AVTECH
PULSER
MAIN OUTPUT
CONNECTOR
SYNC
OUTPUT
AC
POWER
ALL CABLES: 50 OHM COAXIAL
REAL-TIME
OSCILLOSCOPE
CHANNEL A
TRIG
INPUT
SCOPE
PROBE
TEST
LOAD
50 Ω