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Chapter 5. MAINTENANCE
The SLM-7650 is designed for operation without the need for periodic maintenance.
This chapter will provide information on modem firmware upgrades, fault isolation, and
modem performance verification procedures.
5.1
Modem Firmware Upgrade
The use of flash memory has alleviated the necessity to remove and replace individual
ICs that contain the firmware when an upgrade is required. A reflash of the modem will
take less than 4 minutes. Reflash of the modem will completely reconfigure the modem
to the default parameters. Scheduled equipment downtime will be required otherwise the
network will be adversely affected.
Comtech EF Data will provide the program and the files required for the reflash of the
modem. The procedure for a USB reflash upgrade is located on the Comtech EF Data
web site and will also be sent with the new upgrade files. Care is required to assure the
use of the proper files when upgrading the modem. Using old reflash files may result in
the modem being out-of-service until the proper files are used to make the upgrade.
A standard personal computer with USB capability is used for the flash upgrade.
The typical upgrade will be provided on a CD ROM. The CD-ROM will contain a single
executable ZIP file that contains all the files and the program needed to upgrade the
modem. The operator will copy the ZIP file to the desired directory and run the
executable file. The required files will be copied to the user hard drive.
5–1
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