BIRD THRULINE 4021, Instruction Book

Page: 29 / 62

IEEE-488 GPIB Interface
19
Device Dependent Commands
The device-dependent commands used by the 4421 Power Meter are
listed in Figure 15, organized by category.
NOTE: The programming card also has a complete command list.
Figure 15
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