HP WaterSkis E1412A, WaterSkis E1312A manual Checking the Trigger Count Inserting a Trigger Delay

Example: Setting the Trigger Count

In the following example, one DC voltage measurement is made each time the multimeter’s external trigger BNC connector is pulsed low. After 10 external triggers are received, the multimeter returns to the idle state.

dimension array

CONF:VOLT:DC TRIG:SOUR EXT

TRIG:COUN 10

READ?

timeout may occur

enter statement

Dimension computer array. Function: DC voltage.

Trigger source is external BNC on multimeter front panel.

Multimeter will accept 10 external triggers (one measurement is taken per trigger).

Place multimeter in wait-for-trigger state; make measurements when external trigger is received; send readings to output buffer.

May require INIT, monitor the status byte for completion (standard event bit 0), FETC? to transfer readings to the output buffer (vs. READ?).

Enter readings into computer.

Checking the Trigger Count

Inserting a Trigger Delay

Example: Inserting a Trigger Delay

The TRIGger:COUNt? [MINimumMAXimum] command returns one of the following numbers to the output buffer:

•The present trigger count (1 through 50,000) if neither MIN nor MAX is specified.

•The minimum trigger count available (1) if MIN is specified.

•The maximum trigger count available (50,000) if MAX is specified.

The TRIGger:DELay <seconds> command inserts a delay between the trigger and each measurement. This includes a delay between the trigger and the first measurement and again before each subsequent measurement when sample count is greater than one. The <seconds> time parameter sets the delay to a value between 0 and 3600 seconds (with 1 μs resolution).

Substituting MIN for the <seconds> time parameter sets the trigger delay to 0. Substituting MAX for the <seconds> time parameter sets the trigger delay to 3600 seconds.

In the following example, the multimeter will accept 5 triggers from the external trigger BNC connector. Four measurements are taken per trigger (sample count is set to 4) and the trigger delay is 2 seconds.

dimension array

CONF:VOLT:DC TRIG:SOUR EXT

TRIG:COUN 5

SAMP:COUN 4 TRIG:DEL 2

READ?

timeout may occur

enter statement

Dimension computer array. Function: DC voltag.e

Trigger source is external BNC on multimeter front panel.

Multimeter will accept 5 external triggers (one measurement is taken per trigger).

Take 4 measurements for each trigger.

Wait 2 seconds between trigger and start of first measurement and each subsequent measurement till sample count reached.

Place multimeter in wait-for-trigger state; make measurements when external triggers are received; send readings to output buffer.

May require INIT, monitor the status byte for completion (standard event bit 0), FETC? to transfer readings to the output buffer (vs. READ?).

Enter readings into computer.

Chapter 2 HP E1312A/E1412A Multimeter Application Information 49