HP 82479A Owner's Manual page 45

Keywords
MONITOR
MOM TTOR {HIGH [LOM } channel number
channel number - an HP 3421 A channel number (range = 00 - 29).
This statement sets up the HP 3421 A to monitor the specified bit on a digital I/O assembly. If the service
request has been enabled in the HP 3421A, a service request is generated when the bit changes to the
desired state.
Use the =E TSE! statement to set the service request mask in the HP 3421A.
MONITOR SLOT
MOM TTOR SLOT numbers XOR mask value » AND mask value
number - slot number of digital card (0, 1, or 2).
XOR mask value - value in the range 0 to 2556.
AND mask value - value in the range 0 to 255.
This statement sets up the HP 3421 A to monitor the digital card. Byte values read from the input port
are XORed with the XOR mask, then ANDed with the AND mask. Effectively, the 1 bits in the AND
mask specifiy which bits affect the result, and the XOR mask determines the 1/0 choice for each bit. If
the service request bit has been set in the HP 3421A, a service request is generated when the result of the
comparison is 0. Use the ETS! statement to set the service request mask in the HP 3421A.
OHMS2
HM=E [© channel numbers
channel number - an HP 3421A channel number (range = 00 - 29).
This function returns a 2 wire ohms measurement from the current HP 3421A instrument on the
specified channel. If no channel is specified, the reading is taken from the currently closed channel.
3-9