Datum Systems PSM-500L - Page 78

Operation PSM-500/500L/500LT SCPC Satellite Modem
Page 3-18 PSM-500/500L/500LT - Rev. 0.91
Modulator Parameter Detail
Representation
Type
Entry
Description
Mux Mode
IBS Custom
Selection 0 = Disabled,
1 = IBS Standard,
2 = IBS Enhanced
3 = IBS Custom
Enables Multiplexer to
specified mode. Enable
makes other menu selection
below visible.
»Mux ESC Overhead
9600 bps
Selection 0 = Disable
1 to 7 selects standard
rates 300 bps – 38.4 kbps
Only in Custom Mode.
Selects framing resources
committed to ESC Comm.
»Mux MCC Overhead
1200 bps
Selection 0 = Disable
1 to 7 selects standard
rates 300 bps – 38.4 kbps
Only in Custom Mode.
Selects framing resources
committed to MCC Comm.
»Mux Ratio
15:16
Read Only Shows current data to
aggregate ratio for mux.
»Mux ESC Port
RS-485, 4 Wire
Selection 0 = RS-232,
1 = RS-485 2 wire,
2 = RS-485 4 wire,
3 = RS-485 Drvr On
Physical ESC port type. .
(coupled to receive)
»Mux ESC Rate
9600 bps
Selection 0 to 7 selects standard
rates 300 bps – 38.4 kbps
Physical ESC port rate at rear
panel. (coupled to receive)
»Mux ESC Frmt
N,8,1
Selection 0 = N/7/1,
1 = P/7/1,
2 = N/8/1,
3 = P/8/1
Physical ESC port format at
rear panel. (coupled to
receive)
BUC Power
Enabled
Selection 0 = Disabled
1 = Enabled
Selects Power and Voltage to
a BUC in the 500L
BUC Voltage Out
+23.8V
Numeric Read Only Displays Voltage output on
Transmit Cable.
BUC Voltage Min
+20.0V
Numeric 0 to 60.0 V Sets the minimum BUC
voltage before an alarm.
BUC Current Out
2.37A
Numeric Read Only Displays Current draw of BUC
BUC Current Max
5.00A
Numeric 0 to 6.00 A Sets the maximum BUC
current before an alarm.
BUC Current Min
1.25A
Numeric 0 to 4.00 A Sets the minimum BUC
current before an alarm.
BUC 10 MHz Ref
Enabled
Selection 0 = Disabled
1 = Enable
Selects if modem’s current 10
MHz reference to be supplied
to a BUC in PSM-500L
BUC LO Frequency
7375.000000MHz
Numeric 0 to 49999.999996 MHz Selects BUC LO frequency in
PSM-500L. If set non-zero
then IF frequency setting is at
RF frequency.