CDM-600 Satellite Modem

Revision 7

Introduction

MN/CDM600.IOM

1.1.2Software – Flash Upgrading

The internal software is both powerful and flexible, permitting storage and retrieval of up to 10 different modem configurations. The modem uses ‘flash memory’ technology internally, and new firmware can be uploaded to the unit from an external PC. This simplifies software upgrading, and updates can now be sent via the Internet, e-mail, or on disk. The upgrade can be performed without opening the unit, by simply connecting the modem to the serial port of a computer. Refer to Chapter 13 Flash Upgrading for additional information.

1.1.3Verification

The unit includes many test modes and loopbacks for rapid verification of the correct functioning of the unit. Of particular note is the IF loopback, which permits the user to perform a quick diagnostic test without having to disturb external cabling. During the loopback, all of the receive configuration parameters are temporarily changed to match those of the transmit side, and an internal RF switch connects the modulator output to the demodulator input. When normal operation is again selected, all of the previous values are restored.

1.1.4Data Interfaces

The CDM-600 includes, as standard, a universal data interface that eliminates the need to exchange interface cards for different applications. The interfaces offered include:

EIA-422 (EIA530) DCE (at rates up to 10 Mbps)

X.21 DTE and DCE (at rates up to 10 Mbps)

V.35 DCE (at rates up to 10 Mbps)

Synchronous EIA-232 DCE (at rates up to 300 kbps)

G.703 E1, balanced and unbalanced

G.703 T1, balanced

G.703 E2, balanced and unbalanced

G.703 T2, balanced

Serial LVDS (at rates up to 20 Mbps)

Dual Audio, 600Ω (produces a single 64 kbps IBS data stream)

HSSI (optional with CIC-20 interface converter)

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Premier Mounts CDM-600 specifications Software Flash Upgrading, Verification, Data Interfaces