PLS-345 - Physical Layer Switch; User's Guide
Figure 9.2: AUX Port Connection
3.Configure Monitor Mode: Access the PLS command mode as described in Section 5.2. At the PLS> command prompt, type /M [Enter] to display the Monitor Mode Parameters Menu. Note that the Monitor Mode Parameters Menu is not available in User Mode. Set Monitor Mode Parameters as follows:
a)Item 1 - Monitor Mode: On.
Note: Do not enable the Monitor Mode until you have finished defining the other Monitor Mode parameters.
b)Item 2 - Switch if Level: 0 - Low.
c)Item 3 - Switch to Position: B.
d)Item 4 - Delay Period: 1 Minute.
e)Item 5 - Return: Off (Note that if you wanted the A/B circuits to return to their original positions if the monitored line goes high again, then this item would be enabled.)
f)Item 6 - Circuits to Switch: Enable the Monitor Mode at circuits 2 and 3.
4.Set Circuit Parameters: From the PLS command prompt, type /P 2 [Enter] to display the Circuit 2 Parameters Menu. Use item 4 (Default Position) in the Circuit Parameters Menu to set the default state for Circuit 2 to "A". Repeat this procedure for Circuit 3 (use the /P 3 command to access the Circuit 3 Parameters Menu.)
5.Operation: When the DTR signal is present (high), Circuits 2 and 3 will remain in the default (A) position. If the DTR drops for more than one minute, PLS A/B Circuits 2 and 3 will be switched to the "B" position.
