MODEL 4421-488
PROGRAMMING CARD
General Bus Commands
FUNCTION COMMAND DESCRIPTION
Initialize INT Place in factory-set default conditions
Command
Trigger
Software Hand-
shake
Enter Data ENT Send a reading to RS-232 controller
Baud Select B1
Device Dependant Commands
FUNCTION COMMAND DESCRIPTION
Measurement FC
Range RYY
Terminators YT
Prefixes PY
Triggers T0
Status U0
Self-Test J0 Run selt-test
Writable Store WXXXXXX Place XXXXXX in RAM
TRG Take a reading in T3 (one shot on trigger mode)
XO
XF
B2
B3
B4
B5
B6
B7
FD
RC
RD
SW
RL
MN
MX
R00
R01
.
.
.
R17
RNN
YO
YN
PN
T1
T3
T5
U1
U2
Enable software handshake
Disable software handshake
Set to 110
Set to 300
Set to 600
Set to 1200
Set to 2400
Set to 4800
Set to 9600
Forward Carrier Wave
Forward dBm
Reflected Carrier Wave
Reflected dBm
Standing Wave Ratio
Return Loss
Minimum Loss
Maximum Value
Auto range on
Lowest range
Highest range
Auto range off—stickon present range
Two terminators: CR, LF
One terminator: CR
No terminator
Prefix yes
Prefix no
Continuous on ENT
One shot on ENT
One shot on TRG
One shot on measuerment command
Send back current machine state
Send back error conditions
Send back revision levels
MODEL 4421-488
PROGRAMMING CARD
FD
RC
RD
SW
RL
MN
MX
R00
R01
.
.
.
R17
RNN
YO
YN
PN
T1
T2
T3
T4
T5
M01
M02
M04
M08
U1
U2
KN
1
Places module in remote mode
Places module in local mode
Lock out operation of power meter’s front panel pushbuttons
Places module in talker and listener idle states
Returns module to factory default condition
Returns selected module to factory default condition
Forward Carrier Wave
Forward dBm
Reflected Carrier Wave
Reflected dBm
Standing Wave Ratio
Return Loss
Minimum Loss
Maximum Value
Auto range on
Lowest range
Highest range
Auto range off—stickon present range
Two terminators: CR, LF
One terminator: CR
No terminator
Prefix yes
Prefix no
Continuous on Talk
One shot on Talk
Continuous on GET
One shot on Get
Continuous on measurement Command
One shot on measuerment command
Do not generate SRQ
Generate SRQ on Error (IDDC, IDDCO, Buffer Overflow)
Generate SRQ on measurement overrange
Generate SRQ on measurement underrange
Generate SRQ on operation complete
Send back current machine state
Send back error conditions
Send back revision levels
Send EOI on last byte
Do not send EOI on last byte
General Bus Commands
FUNCTION DESCRIPTION
Remote (REN)
GO to Local (GTL)
Local Lockout (LLO)
Interface Clear(IFC)
Device Clear (DCL)
Selective DeviceClear (SDC)
Group Execute Trigger (GET) Provides trigger for T2 and T3 trigger modes
Serial Poll Enable/Disable (SPE/SPD) Status byte is put on bus
1
Refer to controllermanual for structure of bus command.
2
Letters within ( ) represent mnemonics for bus function.
2
Device Dependant Commands
FUNCTION COMMAND DESCRIPTION
Measurement FC
Range RYY
Terminators YT
Prefixes PY
Triggers T0
Serial Polling M00
Status U0
Self-Test J0 Run selt-test
EOI Response KY
Writable Store WXXXXXX Place XXXXXX in RAM