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SLM-7650 Satellite Modem
Operation
3.4.6.3
Utility Interface Menu
Menu Item
TX OVERHEAD TYPE
RX OVERHEAD TYPE
TERRESTRIAL
INTERFACE
RTS TX-IF CNTRL
BUFFER PROGRAM
FRAMING STRUCTURE
TX DATA PHASE
RX DATA PHASE
IDR BACKWARD ALARM
CONTROL
IDR ESC TYPE
Select None, IDR, IBS, VSAT-IBS, IBS-309, or ASYNC for TX overhead type.
Note:
This parameter is only programmable when Custom is selected for
modem type in the Utility menu.
Select None, IDR, IBS, VSAT-IBS, IBS-309, or ASYNC for RX overhead type.
Note:
This parameter is only programmable when Custom is selected for
modem type in the Utility menu.
Selects the data interface to be used: J1 RS422, J6 RS422, G.703 Balanced,
G.703 Unbalanced.
Note: Optional interface only.
Programs the modem to allow a Request-to-Send (RTS) signal to enable the
modulator output when data is ready for transmission.
Press an arrow key to make the selection. Press [ENTER] to execute the change.
Buffer unit program function. Select MILLI-SECONDS or BITS.
Press an arrow key to make the selection. Press [ENTER] to execute the change.
Select the Terrestrial interface frame structure. This function is used with the
BUFFER SIZE program to allow plesiochronous slips in the buffer. Available
selections are:
T1 - NONE or *G.704
E1 - NONE or *G.704
T2 - NONE or G.704, *G.743, or G.747
E2 - NONE or G.704, *G.742, or G.745
(* default parameters)
TX data phase relationship. Use this option to select Normal or Invert for the TX
data relationship to the selected TX clock.
On entry, press an arrow key to make the selection. Press [ENTER] to execute the
change.
RX data phase relationship. Use this option to select Normal or Invert for the TX
data relationship to the selected RX clock.
On entry, press an arrow key to make the selection. Press [ENTER] to execute the
change.
Controls IDR monitor and alarm functions reporting. Use this option to select on or off
for the RX and TX alarms.
On entry, the BW ALARM RX or BW ALARM TX is displayed on line 1.Press an
arrow key to select BW alarm RX or TX numbers 1 through 4 on line 2. Press
[ENTER] to execute the change.
Selects the IDR ESC: 2 – 32 kbps ADPCM Audio or 64 kbps data channel.
3-30
Specifications/usage
Revision 4
MN/SLM7650.IOM
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