ViaSat VBM-1400, Инструкция по установке и эксплуатации

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VBM-1400 Broadband Modulator Installation and User’s Guide
Remote Control
Rev. 002 1018360
4-1
4. Remote Control
The VBM-1400 may be operated remotely using the serial REMOTE
interface connector on the rear panel. To operate in this manner,
perform the following procedures.
1. Ensure the remote controller, “dumb terminal” or PC is connected
as described in paragraph 2.4.1.
2. Turn VBM-1400 power on using the
I - O
rocker switch on the rear
panel above the power cord connection.
3. Observe all front panel LEDs go on, and then go off after about 2
seconds. (LEDs remaining on indicate the function is active). Also,
observe the VBM-1400 INITALIZING screen for approximately 10
seconds, and then the VBM-1400 MODULATOR screen.
4. Using the front panel controls (see FO-1), select the correct
parameters from the REMOTE I/O MENU.
5. Refer to the following paragraphs for a description of the remote
control commands and expected responses when using a “dumb
terminal” or other remote control device.
4.1 PROTOCOL
Each command MUST be prefixed with the following:
:ADR<
where
ADR
is the current assigned EIA-485 address for the unit under control.
Commands may be terminated with carriage return (CR), linefeed (LF),
or both. Commands are case insensitive. An example command is
shown below.
:2<mod_frq ?
Responses will be prefixed w
ith: :ADR> and w
ill be all capital letters as
shown below.
:2ADR>MOD_FRQ 110.1000
4.2 MODULATOR COMMANDS
This section contains the supported Command and Response strings
for modulator control (MOD).
4.2.1 Frequency (MHz)
CMD: “MOD_FRQ x”
x=? Query current frequency.
x=FFFF.FFFF Set frequency (no leading zeros).
FFFF.FFFF = 50-90 MHz or 100-180 MHz or 950-1450 MHz
RSP: “MOD_FRQ FFFF.FFFF” or
RSP: “MOD_FRQ ERROR”