Sets Number of Scanning Cycles

ARM:COUN<number> sets 1 to 32767 scans through the channel list per INIT command. Default is one scanning cycle.

Selects the Trigger Source

TRIG:SOUR defines the trigger source to advance the scan. Default is TRIG:SOUR IMM. TRIG:SOUR? queries the current trigger source. Sources are:

BUS = *TRG via HP-IB interface EXT = Event In connector HOLD = Hold triggering

IMM = Automatic advance

Selects Continuous Scanning Cycles

Use INIT:CONT ON or INIT:CONT 1 to enable continuous scanning cycles. Default made is fixed number of scans, with number set by ARM:COUN<number>.

Selects Scan Mode

SCAN:MODE sets the RF multiplexers for NONE, VOLT, RES, or FRES. NONE, VOLT, and RES have no effect on RF multiplexer operation. FRES sets "paired-channel" scanning.

Selects the Scan List

SCAN<channel_list> defines channels to be scanned using the trigger source set by the TRIG:SOUR command.

Enables Scanning

INIT starts scanning for any trigger source and closes the first channel in the channel list.

Advances the Scan

TRIG can be used to advance the scan for

TRIG:SOUR BUS or TRIG:SOUR HOLD. The command is not functional when TRIG:SOUR IMM or TRIG:SOUR EXT is set.

Figure 4-1. Scanning Channels Commands

32 Understanding the HP E1366A/E1367A RF Multiplexers

Chapter 4