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SLM-3650 Satellite Modem
Operation
3.4.14.5
Function Select: Utility: Modem Type
Refer to Figure 3-21.
UTILITY
MODEM TYPE
INTELSAT DATA
NRZ DATA I/O
G.703 OPERATION
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CR:_________ is a one time displayed menu to permitted the user to enter
DR:_________ kb code/data rate for single rate modems.
Selects the following types of modem operation:
CUSTOM Selections are made from the Front Panel menu
D&I
D&I
ASYNC
ASYNC Overhead Option
IDR
SDM-308
IBS
SDM-309
EFD
Closed Network Operation
3650-00
3650-02
AUPC
CDM
Comtech EF Data Compatible
When the modem is changed from one type of operation to another, the modem will be reset to the
default configurations of the new modem type. The RF-IF Output must be turned on to get the modem
to lock. If the existing modem type is the same as the type entered, the modem will not change any
parameters. If the modem type is changed to Custom, no parameters will be changed. If the modem will
not allow the modem type selection, that type of operation may not be an available option. Select
MODEM OPTIONS and OVERHEAD OPTIONS to see which modem operations are allowed.
CAUTION
Use caution when modifying the Custom Type. This type accepts all changes to the modem,
including incompatible parameter changes. Only experienced modem operators who are
familiar with all of the controls should use Custom type.
Note: Refer to Section 3.5.1 for additional modem type information.
Conditional: Intelsat Data I/O PCB installed only.
50-pin, RS-422-449, or EIA-530
Conditional: NRZ Data I/O installed only.
NRZ, RS-422-449, or EIA-530
Conditional: G.703 Personality I/O PCB must be installed.
Unbalanced or Balanced
3–70
Revision 3
MN/SLM3650.IOM
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