TIMING CONTROL
MAINFRAME PULSE OUTPUT
This instrument can be triggered by its own internal clock or by an external TTL trigger
signal. In either case, two pulse signals respond to the trigger: V
PULSE
(on the mainframe
OUT connector) and SYNC. The amplitude of V
PULSE
is adjustable up to -24V. The pulse
width is fixed at 200 ns. The SYNC pulse is a fixed-width 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 V
PULSE
pulse. When the delay is set to a
negative value the SYNC pulse follows the V
PULSE
pulse.
These pulses are illustrated below, assuming internal triggering and a positive delay:
Figure A
If the delay is negative, the order of the SYNC and OUT pulses is reversed:
Figure B
The next figure illustrates the relationship between the signal when an external TTL-
level trigger is used:
22
SYNC OUT
(generated by the
internal oscillator)
100 ns, FIXED
V
PULSE
OUT
PULSE WIDTH
DELAY > 0
AMPLITUDE,
VARIABLE
3V, FIXED
SYNC OUT
(generated by the
internal oscillator)
100 ns, FIXED
V
PULSE
OUT
PULSE WIDTH
DELAY < 0
AMPLITUDE,
VARIABLE
3V, FIXED
Summary of Contents for AVR-EB2A-B
Page 44: ...The installed DUT is shown below 44 ...
Page 46: ...The installed DUT is shown below 46 ...
Page 48: ...It is still below 300 ps at 10 mA 10 mA as well 48 ...
Page 56: ...PCB 158R4 LOW VOLTAGE POWER SUPPLY ...
Page 65: ...TEST JIG WIRING AVX CA AXPOST ...
Page 67: ...TEST JIG WIRING AVX CA SOD123 QTKA ...
Page 69: ...TEST JIG WIRING AVX CA SOT23B ...
Page 70: ...CUSTOMIZED DAUGHTERBOARD AVX CA SOT23B ...
Page 71: ...PERFORMANCE CHECK SHEET 71 ...