Thruline RF Power Meter, Model 4421
17
Device Dependent Commands
The device-dependent commands used by the 4421 Power Meter are listed in
Table 8
, organized by category.
Note: The programming card also has a complete command list.
Table 8 IEEE-488 Device Dependent Command Summary
Category Command Description
Measurement
FC Forward carrier wave
FD Forward dBm
RC Reflected carrier wave
RD Reflected dBm
SW Standing wave ratio
RL Return loss
MN Minimum value
MX Maximum value
Range
RYY Auto range on
R00 to R17 Manual ranges
RNN Auto range off, stay at present range
Terminators
YT Two terminators: CR, LF
YO One terminator: CR
YN No terminator
Prefixes
PY Prefix YES
PN Prefix NO
Triggers
T0 Continuous on TALK
T1 One shot on TALK
T2 Continuous on GET
T3 One shot on GET
T4 Continuous on measurement command
T5 One shot on measurement command
Serial Polling
M00 Do not generate SRQ
M01 Generate SRQ on error
M02 Generate SRQ on measurement overrange
M04 Generate SRQ on measurement underrange
M08 Generate SRQ on operation complete
Status
U0 Send back current machine state
U1 Send back error conditions
U2 Send back revision levels
Self-Test J0 Run self-test
EOI Response
KY Send EOI on last byte
KN Do not send EOI on last byte
Writable Store WXXXXXX Place XXXXXX in RAM
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