Chapter 3 Programming Your Universal Counter for Remote Operation

Elements of SCPI Commands

Command Settings for Optimizing Throughput

This section lists the commands which enable the Counter to transfer data at the fastest possible rate. See the “To Optimize Throughput” sample programs on pages 3-73 , 3-86, and 3-96

Commands to Set Counter for Optimal Throughput

Unless otherwise noted, these settings are stored on Save (*SAV).

All of these settings are reset by *RST or a power cycle.

Disable auto trigger on measurement channel(s):

Specify absolute trigger levels—

[:SENSe]:EVENt[12]:LEVel[:ABSolute] <numeric_value> [V]

or simply disable auto-trigger—

[:SENSe]:EVENt[12]:LEVel[:ABSolute]:AUTO OFF

Set gate/arm to auto for appropriate measurement:

For Frequency, Period, and Ratio—

[:SENSe]:FREQuency:ARM[:STARt]:SOURce IMMediate [:SENSe]:FREQuency:ARM:STOP:SOURce IMMediate

For Phase—

[:SENSe]:PHASe:ARM[:STARt]:SOURce IMMediate

For Time Interval (HP 53131A Only) —

[:SENSe]:TINTerval:ARM[:STARt]:SOURce IMMediate [:SENSe]:TINTerval:ARM:STOP:SOURce IMMediate

For Time Interval (HP 5313 2A Only)—

[:SENSe]:TINTerval:ARM: ESTART:LAYer2:SOURce IMMediate

[:SENSe]:TINTerval:ARM :ESTART[:LAYer[1]]: SOURce IMMediate [:SENSe]:TINTerval:ARM :ESTOP:LAYer2:SOURce IMMediate [:SENSe]:TINTerval:ARM: :ESTOP[:LAYer[1]] :SOURce IMMediate

Define device trigger to FETC?:

When the device trigger is defined as FETC?, the Group Execute Trigger should be used to query for a result.

*DDT #15FETC?

Programming Guide

3-35