CDM-625 Advanced Satellite Modem
Revision 1
Front Panel Operation
MN-0000036 (Ref MN/CDM625.IOM)
5.10 SELECT: ODU
The CDM-625 modem is able to interface with various ODUs (Outdoor Units). These are:
•
Comtech RF Transceivers: CSAT-5060, KST-2000 series
•
L-band BUC (Block Up Converter)
•
L-band LNB (Low Noise Block).
Configuration menus allow the user to set up power supplies, a 10 MHz reference and low/high
current alarm thresholds for the BUC and LNB. LO menus for the BUC and LNB allow the user
to set up the up-convert and down-convert parameters for the BUC and LNB so that the user can
view the satellite frequencies as well as the modem IF input/output frequencies.
BUCs, CSAT and KST transceivers may be controlled and monitored via an FSK link.
ODU: BUC:PwRef
LNB:PwRef FSK-control (
34
)
Use the
◄
►
arrow and
ENTER
keys to select the next menu.
BUC:PwRef
Provides access to menus to enter a Tx LO frequency, and to control a
10MHz reference and for Power supply control and alarm limits.
LNB:PwRef
Provides access to menus to enter an Rx LO frequency, and to control a
10MHz reference and for Power supply control and alarm limits.
FSK-control
Provides access to menus to monitor and control BUC or CSAT/KST
parameters.
5.10.1 ODU: BUC:PwRef (Power Supply and Reference)
BUC control/monitor (non-FSK):
PSU-and-10MHz LO-freq PSUmonitor (
34
)
The modem provides DC power and a 10MHz reference which may be used by a BUC.
5.10.1.1
ODU: BUC:PwRef
Æ
PSU and 10MHz Parameters
BUC supply=N/I 10MHz-ref:Off (Off,On)
Alarm limits, from 0.0 to 2.0 amps (
34v
)
Select the parameter to edit using the
◄
►
arrow keys. The available options are shown in
parentheses. Use the
▲
▼
arrow keys to edit the setting, then press
ENTER
when done.
(
Note:
a BUC will not transmit without a 10MHz reference.)
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