HP WaterSkis E1312A, WaterSkis E1412A manual SOURce, Related Commands INITiate, READ?, MEAS?

:SOURce

TRIGger:SOURce <source> configures the trigger system to respond to the specified source. The following sources are available:

•BUS: Group Execute Trigger (GET) bus command or *TRG common command.

•EXT: The multimeter’s External Trigger BNC connector (triggers on the negative or falling edge of the ±5V TTL input signal).

•IMMediate: The trigger system is always true.

•TTLTrg0 - TTLTrg7: Trigger source is VXIbus trigger line 0 through 7.

NOTE: B-size controllers do not support VXIbus TTL triggers (e.g.,

HP E1306A Command Module, HP E1300/E1301A B-Size Mainframes).

Parameters

Parameter Name	Parameter Type	Range of Values	Default Units
<source>	discrete	BUSEXTIMMediate	none
		TTLTrg0 through TTLTrg7

Comments • The TRIGger:SOURce command only selects the trigger source. You must use the INITiate command to place the multimeter in the wait-for-trigger state. (The MEASure command automatically executes an INITiate command.)

•TRIGger:SOURce EXT uses the multimeter's front panel “Trig” BNC connector as the trigger source. The multimeter triggers on the falling (negative-going) edge of a ±5V TTL input signal; (maximum input is +5V to the front panel BNC connector).

•TRIGger:IMMediate causes a trigger to occur immediately provided the multimeter is placed in the wait-for-trigger state using INITiate, READ? or

MEAS?.

•When a Group Execute Trigger (GET) bus command or *TRG common command is executed and the multimeter is not in the wait-for-trigger state, the “Trigger ignored” error is generated.

•The CONFigure and MEASure command subsystems automatically set the trigger source to TRIG:SOUR IMM.

•The READ? command cannot be used if the trigger source is

TRIG:SOUR BUS.

•Related Commands: INITiate, READ?, MEAS?

•*RST Condition: TRIG:SOUR IMM

Example Set the Sample Source

CONF:VOLT:DC	Function: DC voltage.
TRIG:SOUR EXT	Trigger source is external BNC on multimeter
TRIG:COUN 10	front panel.
	Multimeter will accept 10 external triggers.
READ?	Place multimeter in wait-for-trigger state;
	make measurements when external trigger is
enter statement	received; send readings to output buffer.
	Enter readings into computer.

160 Multimeter Command Reference Chapter 3