Comtech EF Data CDM-760, Installation And Operation Manual

Page: 190 / 441

Ethernet Interface Operation Revision 4
CDM-760 Advanced High-Speed Trunking Modem MN-CDM760
7–23
7.4.4.3.2.2 Configuration | Interface | PIIC
Use this page to configure the optional G.703 E3/T3/STS-1, OC-3 Single Mode; OC-3 Multi Mode;
STM-1 Copper; and DVB ASI PIIC modules, if installed, in PIIC Slots 1 and/or 2.
See Figure 7-13. This page requires installed optional Plug-In Interface Card(s).
PIICs are not available when the optional High-Speed Packet Processor is
installed; for such applications, this page is non-functional and the message “PIIC
Not Installed” displays in the Slot 1 and Slot 2 page sections.
Typical for the Slot1 and Slot2 page sections, when a PIIC module is present in either or both
slots:
G.703 Configuration
SEE APPENDIX C. OPTIONAL PIIC (PLUG-IN INTERFACE CARD) MODULES:
Sect. C.2.1 G.703 E3/T3/STS-1 PIIC Module (CEFD P/N PL-0000795)
This section displays whenever the G.703 E3/T3/STS-1 PIIC is installed in the applicable PIIC slot.
•
Use the Interface Type drop-down list to select None , E3 , T3 , or STS1 .
•
Use the Tx Clock Source drop-down list to select Tx Clock , Ext Clock , or Rx Sat .
Comtech EF Data strongly recommends that you select Tx Clock unless a high
stability External Clock is present and timing of the network requires all devices
to be locked to the External Clock.
• Use the Rx Clock Source drop-down list to select Tx Clock , Ext Clock , Rx Sat , or Int Clock.
Comtech EF Data strongly recommends that you select Rx Sat unless a high
stability External Clock is present and timing of the network requires all devices
to be locked to the External Clock.
•
Use the External Clock drop-down list to set the expected source clock rate (via the CDM-
760 rear panel J8 | EXT REF connector) as 1 MHz , 2 MHz , 5 MHz , 10 MHz , 20 MHz , 34.368
MHz , 44.736 MHz , or 51.85 MHz .
•
Enter an Rx Buffer Size (ms) buffer size, from 2 ms to 75 ms, in 0.5 ms steps.
Click [Configure PIIC] to clear the Rx Buffer.
Click
[Configure PIIC]
to save your G.703 configuration settings.