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Front Panel Operation
CDM-760 Advanced High-Speed Trunking Modem
Step
2
3
4
B. EXIT MULTISTREAM MODE
Step
1
2
3
4
5
6
Step
1
2
Task
Make sure that both interface slots (PIIC1 and PIIC2) are set as either
NONE (not installed) or OFF (not active).
You will know the total Tx data rate that the modem permits
after completing this step. Make sure this Tx data rate is
sufficient for transmitting the intended aggregate interface type
services.
Configure the modem settings for MultiStream Mode operation:
a) Select the Tx parameters for the carrier that will act as the aggregate
carrier of all interface types to be transmitted.
b) Choose the correct ModCods, Pilots, Symbol Rate, etc., to make sure
that the total Tx uplink is sufficient for all of the interface types that
will be multiplexed together.
Return to the CONFIG: Intf menu and make sure one or both of the PIIC
data interface traffic types can operate.
If the configured Tx data rate capacity is not sufficient for the
PIIC selection, the modem rejects this setting. If this happens,
start again at Step 1 to correct the configuration.
Task
Use the arrow keys to select the CONFIG: Intf menu.
Make sure that both interface slots (PIIC1 and PIIC2) are set either to Off
(not active) or NONE (not installed).
Make sure that both GbE interfaces (GBEI1 and GBEI1) are set as Off (not
active).
Make sure that the Optical interface (J7 | OPTICAL port SFP module) is set
as NONE (not installed).
Configure one PIIC interface, or any combination of the GbE interfaces, to
operate.
Use the arrow keys to select the CONFIG: Tx → Data → Tx Data Rate
menu. Make sure the Tx Data Rate MIN_DR variable displays "000000.000".
After the Tx side of the link is configured, do these next steps to configure
the Rx side for Single Stream or MultiStream Mode:
Task
Configure the Rx Symbol Rate.
Use the arrow keys to select the CONFIG: Rx→ Data→ Rx Symbol Rate
menu. Set the Rx Symbol Rate to match the far side modem Tx Symbol Rate.
Set the Rx GoldCode (Gold-n Index Code).
Use the arrow keys to select the CONFIG: Rx → Freq menu. Set the Rx
GoldCode to match the far side modem Tx GoldCode.
6–29
Revision 4
MN-CDM760
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