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SCPI Commands for the Counter
VX4101A MultiPaq Instrument User Manual
3–43
ARM ([:SEQuence1] |:STARt) [:LAYer]:IMMediate
Command Response
INST:SEL COUNTER Selects the Counter
ARM:SOUR:CAT? HOLD, IMMEDIATE, BUS, TTLTRG0, TTLTRG1, TTLTRG2,
TTLTRG3, TTLTRG4, TTLTRG5, TTLTRG6, TTLTRG7,
COMMAND0, COMMAND1, COMMAND2, COMMAND3,
COMMAND4, TIMER, SUREPATH, DMM, COUNTER,
CTR_EXTARM, CTR_CHAN2, DAC, DIGI, DIGO
CONF:FREQ Configures the Counter to read frequency
ARM:SOUR TTLT0 Arms source TTLT0
INIT Begins the measurement
FETC:COUN? 0
Returns the number of measurements
TRIG:IMM Arms Counter to take an immediate measurement
FETC:COUN? 1
Returns the number of measurements
FETC? 1.234567890E6
ARM ([:SEQuence1] |:STARt) [:LAYer]:LEVel
Command Response
INST:SEL COUNTER Selects the Counter
ARM:SLOP NEG
ARM:LEV TTL
INST SEL DMM
TRIG:SOUR CTR_EXTARM
CONF:VOLT:DC
INIT
<wait until falling edge of
external arm crosses 1.6 V>
FETC? +1.00000E–01
ARM ([:SEQuence1] |:STARt) [:LAYer]:MODE
Command Response
INST:SEL COUNTER Selects the Counter
CONF:ARR:FREQ 3 Configures the Counter to take three array measurements