Publication No. 980935 Rev. A
3152B User Manual
EADS North America Test and Services
Operation 3-3
Turning the
Output On
For safety, the “OUTPUT” connector of the 3152B defaults to the
“Off” state when the unit is first powered up or receives a software
reset. To avoid the production of random signals at the output
connector, keep the output in the “Off” state while setting up the
instrument.
The output signal is connected to the “OUTPUT” connector through
a mechanical relay. When writing software to control the 3152B,
provide a 2 ms delay to make sure that the signal output is stable
before you proceed with the next step of the test. Use the following
commands to turn the output on and off.
outp 1
Turns the output on
outp 0
Turns the output off
The 3152B defaults to a 1 MHz, 5 Vp-p sine wave when you apply
power or reset the unit. If you turn the output on before changing
any settings, the output defaults to a sine wave signal.
Turning the SYNC
Output On
For safety, the “SYNC OUT” connector of the 3152B defaults to the
“Off” state when the unit is first powered up or receives a software
reset. To avoid the production of random signals at the output
connector, keep the SYNC output in the “Off” state while setting up
the instrument.
The SYNC output signal is hard-wired to the output connector and,
therefore, the output impedance remains low regardless of whether
the output is on or off. Use the following command to turn the SYNC
output on and off:
outp 1
Turns the SYNC output on
outp 0
Turns the SYNC output off
When you apply power or reset the 3152B, the SYNC output
defaults to a single pulse that has a fixed width of four sample clock
periods.
Selecting the
SYNC Source
The main purpose of the SYNC output is to produce a pulse that
other devices may synchronize with. The width of the “SYNC” signal
might be too narrow for slower devices. The pulse width, and
several other parameters, may be programmed using the following
commands:
outp:sync:sour bit
Provides a signal that is synchronized with
an external trigger event when the 3152B
is placed in one of its interrupted modes.
Generates a narrow sync signal every
time the segment is generated. The sync
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