User manual

36 Using the Relay Multiplexer Chapter 2
Table 2-2 summarizes the query commands you can use to determine the
configuration or state of the multiplexer. All commands put the data into the
output buffer where you can retrieve it to your computer.
Table 2-2. Multiplexer Query Commands
Table 2-3 lists the parameter
s and default values for the functions described
in this chapter. When the multiplexer is switched on or *RST (reset), all 
bank channels are set to open and the current channel_list
for scanning is
invalidated.
Table 2-3. Multiplexer Reset Conditions
Command Description Command Description
ARM:COUN? Number of Scanning Cycles SCAN:PORT? Scanning Port Selected
CLOS? Channel Closed STAT:OPER:ENAB? Status Operation Enable
FUNC? Operating Mode Selected STAT:OPER:EVEN? Status Operation Event
OPEN? Channel Open SYST:CDES? <number> Module Description
INIT:CONT? Scanning State SYST:CTYP? <number> Module Type
OUTP:ECLTrg
n ? ECL Trigger Output State SYST:ERR? System Error
OUTP:EXT? External Trigger Output State TRIG:SLOP? Trigger Slope
OUTP:TTLTrg n ? TTL Trigger Output State TRIG:SOUR? Trigger Source
SCAN:MODE? Scanning Mode Selected
Parameter Default Description
ARM:COUNt 1 Number of scanning cycles is one
INITiate:CONTinuous OFF Number of scanning cycles is set by ARM:COUNt
OUTPut:ECLTrg
n [:STATe] OFF Trigger output from ECLT sources is disabled
OUTPut[:EXTernal][:STATe] OFF Trigger output from external sources is disabled
OUTPut:TTLTrg
n [:STATe] OFF Trigger output from TTLT sources is disabled
[ROUTe:]SCAN:MODE NONE Channel list volts/ohms measurements disabled
[ROUTe:]SCAN:PORT NONE Analog bus port connection disabled
TRIGger:SOURce IMM Will advance scanning cycles automatically