Avtech AVR-3-PW-TEK3-B, Инструкция по эксплуатации

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-CT OPTION (AVX-TEK3-CT3)
The -CT option provides an additional output module that is physically suitable for use
with the Tektronix CT-1 and CT-2 ultra-fast (i.e., sub-nanosecond rise time) current
probes. It is used with the OUT2 output of the mainframe. A 2 cm length of wire must
the fed through the probe under test, and then both ends of the wire must be soldered
to the microstrip lines on the PCB. This arrangement is shown below:
BASIC PULSE CONTROL
This instrument can be triggered by its own internal clock or by an external TTL trigger
signal. In either case, three output channels respond to the trigger: OUT1, OUT2 and
SYNC.
OUT1 and OUT2 have independently adjustable amplitude and pulse width settings.
They share a common trigger source, however, and the OUT1 and OUT2 pulses are
approximately simultaneous.
The SYNC pulse is a 100 ns wide TTL-level reference pulse used to trigger
oscilloscopes or other measurement systems. When the delay is set to a positive value
the SYNC pulse precedes the OUT1 and OUT2 pulses. When the delay is set to a
negative value the SYNC pulse follows the OUT1 and OUT2 pulses.
These pulses are illustrated below, assuming internal triggering, positive amplitude, and
a positive delay:
24
TO
MAINFRAME,
OUT2
REMOVABLE (DESOLDERABLE)
BUS-BAR WIRE FED
THROUGH THE CT-2 PROBE.
CT-2 PROBE (DUT)
TO
OSCILLOSCOPE
49.9Ω RESISTOR