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L4421A 40-Channel Armature Multiplexer 4
L4400 User’s Guide 101
Table 4-1. L4421A Supported Measurement Functions.
L4421A SCPI Command Summary
Table 4-2 lists the instrument-specific SCPI commands that apply to the
L4421A 40- channel Armature Multiplexer. Table 3- 3 (Chapter 3) lists the
SCPI commands that apply to all L4400 series instruments.
For complete information on all SCPI commands, refer to the Programmer’s
Reference contained on the L4400 Product Reference CD- ROM (p/n
34989- 13601).
Table 4-2. L4421A SCPI Command Summary.
Function
Notes
Voltage, AC/DC
Current, AC/DC direct current measurements are allowed on channels
41 through 44 only - external shunts are required for all
other channels
Frequency / Period
Ohms, 2-wire
Ohms, 4-wire
Thermocouple Optional 34921 T Terminal Block is required for thermo-
couple measurements with built-in internal reference
junction
RTD, 2-wire
RTD, 4-wire
Thermistor
Subsystem
Commands
ROUTe
(Scan Configuration)
ABORt
INITiate
ROUTe:CHANnel:ADVance:SOURce {EXTernal|BUS|IMMediate}
ROUTe:CHANnel:ADVance:SOURce?
ROUTe:CHANnel:DELay (@<ch_list>)
ROUTe:CHANnel:DELay? (@<ch_list>)