Instruction Manual

MODEL 4421-488
PROGRAMMING CARD
General Bus Commands
FUNCTION COMMAND DESCRIPTION
Initialize INT Place in factory-set default conditions
Command
Trigger
TRG Take a reading in T3 (one shot on trigger mode)
Software Hand-
shake
XO
XF
Enable software handshake
Disable software handshake
Enter Data ENT Send a reading to RS-232 controller
Baud Select B1
B2
Set to 110
Set to 300
B3
B4
B5
Set to 600
Set to 1200
Set to 2400
B6
B7
Set to 4800
Set to 9600
Device Dependant Commands
FUNCTION COMMAND DESCRIPTION
Measurement FC
FD
Forward Carrier Wave
Forward dBm
RC
RD
Reflected Carrier Wave
Reflected dBm
SW
RL
Standing Wave Ratio
Return Loss
MN
MX
Minimum Loss
Maximum Value
Range RYY
R00
Auto range on
Lowest range
R01
.
.
.
R17
RNN
Highest range
Auto range off—stick on present range
Terminators YT
YO
YN
Two terminators: CR, LF
One terminator: CR
No terminator
Prefixes PY
PN
Prefix yes
Prefix no
Triggers T0
T1
Continuous on ENT
One shot on ENT
T3
T5
One shot on TRG
One shot on measuerment command
Status U0
U1
U2
Send back current machine state
Send back error conditions
Send back revision levels
Self-Test J0 Run selt-test
Writable Store WXXXXXX Place XXXXXX in RAM
MODEL 4421-488
PROGRAMMING CARD
General Bus Commands
FUNCTION COMMAND DESCRIPTION
Initialize INT Place in factory-set default conditions
Command
Trigger
TRG Take a reading in T3 (one shot on trigger mode)
Software Hand-
shake
XO
XF
Enable software handshake
Disable software handshake
Enter Data ENT Send a reading to RS-232 controller
Baud Select B1
B2
Set to 110
Set to 300
B3
B4
B5
Set to 600
Set to 1200
Set to 2400
B6
B7
Set to 4800
Set to 9600
Device Dependent Commands
FUNCTION COMMAND DESCRIPTION
Measurement FC
FD
Forward Carrier Wave
Forward dBm
RC
RD
Reflected Carrier Wave
Reflected dBm
SW
RL
Standing Wave Ratio
Return Loss
MN
MX
Minimum Loss
Maximum Value
Range RYY
R00
Auto range on
Lowest range
R01
.
.
.
R17
RNN
Highest range
Auto range off—stick on present range
Terminators YT
YO
YN
Two terminators: CR, LF
One terminator: CR
No terminator
Prefixes PY
PN
Prefix yes
Prefix no
Triggers T0
T1
Continuous on ENT
One shot on ENT
T3
T5
One shot on TRG
One shot on measuerment command
Status U0
U1
U2
Send back current machine state
Send back error conditions
Send back revision levels
Self-Test J0 Run selt-test
Writable Store WXXXXXX Place XXXXXX in RAM