Screen Saver; Opening Screen - Comtech EF Data CDM-570A Installation And Operation Manual

6.1.3.1

Screen Saver

----------- Unit Label --
any key.... Demod not lock
If you were to leave the operating unit displaying the same screen for weeks at a time, the VFD
could become 'burnt' with this image. To prevent such burn-in, a screen saver feature activates
after 1 hour. The screen saver message scrolls from right to left across the screen, and then
wraps around. The user-configurable unit label, or Circuit ID, displays on the VFD top line, while
the bottom line displays the demod lock state (i.e., 'Demod not locked' or the circuit E
value if the demod is locked) and the prompt 'Press any key...' Press any key to return to
the previous screen.
6.1.3.2

Opening Screen

The opening screen displays once you first apply power to the modem. Press CLEAR from any
other nested menu until this screen appears. Press any other key to advance to the Select:
(Main) menu screen.
When you disable the Internal Reference warm-up delay feature (see Section 6.3.7.3.2),
depending on the modem type, one of the following screens displays:
CDM/R-570AL(L-Band) unit:
Comtech CDM/R-570AL Modem
Firmware Version #.#.#
If, however, you enable the Internal Reference warm-up delay feature, one of the following
screens displays:
CDM/R-570AL(L-Band) unit:
Comtech CDM/R-570ALModem
Ref Warming-up: 045
The bottom line counts down, in seconds, the time remaining for the warm-up period. During this
period, the modem deliberately mutes the Tx Carrier. At the end of the warm-up period, the
bottom line reverts to the 'normal' opening screen display (i.e., it displays the modem Firmware
version), and the modem ENTERs into its normal operational state.
X
Bypass (override) the warm-up period at any time by pressing the CLEAR key.
Front Panel Operation
CDM-570A/570AL Satellite Modem with Optional Packet Processor
CDM-570A (70/140 MHz) unit:
Comtech CDM-570A Modem
Firmware Version #.#.#
CDM-570A (70/140 MHz) unit:
Comtech CDM-570A Modem
Ref Warming-up: 045
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MN-CDM570A