User manual

Relay Multiplexer Command Reference 71Chapter 3
Parameters
Comments Enabling TTL Trigger Bus: When enabled, a negative-going pulse is
output from the selected TTL Trigger bus line (0 to 7) after each channel
in the switchbox is closed during a scan. If disabled, a pulse is not output.
TTL Trigger Bus Line Shared by Switchboxes: Only one switchbox
configuration can use the selected TTL Trigger at a time. When enabled,
the selected TTL Trigger bus line (0 to 7) is pulsed by the switchbox each
time a scanned channel is closed. To disable the output for a specific
switchbox, send the OUTPut:TTLTrgn OFF or 0 command for that
switchbox.
One Output Selected at a Time: Only one output (ECLTrg0 or 1; TTLTrg0,
1, 2, 3, 4, 5, 6>, or 7; or EXTernal) can be enabled at one time. Enabling
a different output source will automatically disable the active output.
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For example, if TTLTrg1 is the active output and TTLTrg4 is enabled,
TTLTrg1 will become disabled and TTLTrg4 will be the active output.
Related Commands: [ROUTe:]SCAN, TRIGger:SOURce,
OUTPut:TTLTrgn[:STATe]?
*RST Condition: OUTPut:TTLTrgn[:STATe] OFF (disabled)
Example Enabling TTL Trigger Bus Line 7
OUTP:TTLT7:STAT 1
!Enable TTL Trigger bus line 7 to output
pulse after each scanned channel is
closed
OUTPut:TTLTrgn[:STATe]?
OUTPut:TTLTrgn[:STATe]? queries the present state of the specified TTL
Trigger bus line. The command returns "1" if the specified TTLTrg bus
line is enabled or "0" if disabled.
Example Query TTL Trigger Bus Enable State
This example enables TTL Trigger bus line 7 and queries the enable
state. The OUTPut:TTLTrgn? command returns "1" since the port is
enabled.
OUTP:TTLT7:STAT 1
!Enable TTL Trigger bus line 7
OUTP:TTLT7?
!Query bus enable state
Name Type Range of Values Default
<n> numeric 0 or 7 N/A
<mode> boolean 0 I 1 I OFF I ON OFF I 0