MODEL 7748 SINGLE CHANNEL RS530 DB25 A/B SWITCH W/CUTOFF, TELNET AND GUI
Electro Standards Laboratories, Inc.
(401) 943-1164
www.electrostandards.com - pg 9 - Pub. 4703-02
Remote Telnet Commands
All remote control commands are ASCII CONTROL commands. A
CONTROL command is created by pressing and holding the [CTRL] key
and the designated character key simultaneously. For example, to
create the CTRL-A command, simply press the [CTRL] and [A] keys on
the keyboard simultaneously then release both. Do not press the Enter
key at the end of a command. See Table 1 below for details.
Table 2: Remote Control Commands
Switch Position on Power Down
If power to the Model 7748 is lost, the switch will switch to the Cutoff
Position that isolates all communication ports.
Upon power restore, the unit will automatically switch to the Default
Position. This Default Position is configurable by the user through Telnet
Commands or the Graphical User Interface (GUI).
Command
Parameters
Function
Response
CTRL-A
N/A
switch to A
xxx Position: A, <un/locked>
(Default Position: <A/B>)
CTRL-B
N/A
switch to B
xxx Position: B, <un/locked>
(Default Position: <A/B>)
CTRL-L
N/A
Locks front
panel
xxx Position: <A/B>, Locked
(Default Position: <A/B>)
CTRL-U
N/A
Unlocks front
panel
xxx Position: <A/B>, Unlocked
(Default Position: <A/B>)
CTRL-D
<Position>
A or B
Sets default
position
After CTRL-D: 301 Enter 'A' or 'B'
to set default position. After A or
B:
xxx Position: <A/B>, <un/locked>
(Default Position: <A/B>)
CTRL-P
N/A
Query for
current status
xxx Position <A/B> <un/locked>
<Auto Fallback/Manual Mode>
CTRL-V
N/A
firmware version
number
901 M7748, Firmware Version x.x,
Compiled <Date>
