Avtech AVO-6-B, Instructions Manual

Page: 22 / 48

The load resistors must have a voltage rating of at least 110V, and a power rating of at
least 15 Watts. They must also be low-inductance, or the waveform will become
distorted and exhibit noticeable ringing.
BASIC TEST ARRANGEMENT - WITH OUTPUT MODULE
To fully test the instrument, and for normal operation, the output module must be
connected as shown below:
If a Tektronix CT2 current probe or Pearson 2878 current transformer is not available to
measure the output current waveform, or the output pulses are too wide, a 1 Ohm
resistor may be used to sense the current instead. However, noticeable ringing and
22
OUT CONNECTOR #1
SYNC
OUTPUT
AC
POWER
TRIG
INPUT
AVO-6HZ-B
MAINFRAME
50 Ω,
>12 W
REAL-TIME
OSCILLOSCOPE
CHANNEL A
SCOPE
PROBE
OUT CONNECTOR #3
OUT CONNECTOR #2
OUT CONNECTOR #4
OUT CONNECTOR #5
50 Ω,
>12 W
CHANNEL B
To three other
50 Ohm loads.
OUT
AVTECH
AVO-6HZ-B
MAINFRAME
Five
5-foot RG-58
coaxial cables
6-foot DB-9
control cable
SYNC
OUTPUT
AC
POWER
TRIG
INPUT
AVO-6HZ-T
OUTPUT
MODULE
IN
CONTROL
CONTROL
REAL-TIME
OSCILLOSCOPE
CHANNEL A
Diode (device under test),
oriented for positive operation.
Reverse for negative operation.
GND
OUT
Tektronix CT2 current probe or
Pearson 2878 current transformer