Avtech AVI-V-B-N-VCB, Инструкция по эксплуатации

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OPERATIONAL CHECK
This section describes a sequence to confirm the basic operation of the instrument. It
should be performed after receiving the instrument. It is a useful learning exercise as
well.
Before proceeding with this procedure, finish reading this instruction manual
thoroughly. Then read the “Local Control” section of the “Programming Manual for -B
Instruments” thoroughly. The “Local Control” section describes the front panel controls
used in this operational check - in particular, the MOVE, CHANGE, and ADJUST
controls.
A 50 Ohm load is required for proper operation. The output stage may be damaged if
the output is not terminated into a 50Ω load.
1. Connect the pulse generator to a sampling oscilloscope as shown above. Note that:
a) If using a sampling oscilloscope, the use of 40 dB attenuator at the sampling
scope vertical input channel will ensure a peak input signal to the sampling
scope of less than 1 Volt.
b) If using a real-time 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 over-driving the TRIG input channel of some sampling
oscilloscopes, a 20 dB attenuator should be placed at the input to the scope
trigger channel.
24
AVTECH
PULSER
MAIN OUTPUT
CONNECTOR
TRIG
CONNECTOR
AC
POWER
ALL CABLES: 50 OHM COAXIAL
SAMPLING
OSCILLOSCOPE
BW > 10 GHz
50 OHM INPUT
TRIG
CONNECTOR
40 dB
ATTENUATOR