User`s manual

OUTPut
The OUTPut command subsystem enables you to route the multimeter’s voltmeter
complete signal to the VXIbus TTL trigger lines.
Subsystem Syntax OUTPut
:TTLTrgn[:STATe] <mode>
:TTLTrgn[:STATe]?
:TTLTrgn[:STATe]
OUTPut:TTLTrgn[:STATe] <mode> enables or disables routing of the voltmeter
complete signal to the specified VXIbus trigger line (TTLTrg0 through TTLTrg7)
on the backplane P2 connector.
Parameters
Parameter Name Parameter Type Range of Values Default Units
n
discrete 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 none
<mode>
boolean OFF | 0 | ON | 1 none
Comments • The OUTPut subsystem applies to the HP E1411B multimeter only.
• You can substitute decimal values for the OFF ("0") and ON ("1") parameters.
• The voltmeter complete signal is always routed to the E1411B multimeter’s front
panel "VM Complete" BNC connector. When enabled (
ON), the OUTPut
command also routes voltmeter complete to the specified trigger line on connector
P2. When disabled (
OFF), voltmeter complete is routed only to the multimeter’s
front panel connector.
• The multimeter generates the voltmeter complete signal after it has sampled the input
for each reading. The length of time this low-going TTL signal is true (low) depends
on the aperture time and on the autozero mode as shown below.
Aperture Time
Voltmeter Complete low
Autozero ON Autozero OFF
320 ms (50 Hz)
267 ms (60 Hz)
20 ms (50 Hz)
16.7 ms (60 Hz)
2.5 ms (400 Hz)
100 µs
10 µs
350 ms
370 µs
20.5 ms
17.2 ms
3.1 ms
520 µs
NA
350 µs
370 µs
370 µs
390 µs
430 µs
250 µs
70 µs
• The VXIbus trigger lines are open-collector TTL lines that remain in a
non-asserted (high) state until the voltmeter complete signal is sent.
• *RST Condition: OUTP:TTLTn OFF
153 Command Reference Chapter 5