Patton electronic 1080ARC 用户手册

30

5.3  POWER-UP

There is no power switch on the Model 1080ARC.  Power is automati-
cally applied to the Model 1080ARC when its card-edge connector 
makes contact with the chassis’ mid-plane socket, or when the chassis’ 
power supply is turned on.

The Model 1080ARC is a “hot swappable” card—it will not be 

damaged by plugging it in or removing it while the rack is pow-
ered up.   

When the local and remote Model 1080ARCs are both powered up and 
are passing data normally, the following LED conditions will exist:

• PWR = green

• TD & RD = flashing red and green

• RTS & CD = green

• TEST = off

5.4  TEST MODES

The Model 1080ARC offers two V.54 test modes and two V.52 test 
modes to evaluate the condition of the modems and the communication 
link.  Both sets of tests can be activated physically from the front panel. 
The V.54 test can also be activated from the RS-232 interface.

V.54 and V.52 test modes on the Model 1080ARC are available 

for point-to-point applications only.

The Local Analog Loopback (LAL) test checks the operation of the local 
Model 1080ARC, and is performed separately on each unit.  Any data 
sent to the local Model 1080ARC in this test mode will be echoed 
(returned) back to the user device.  For example, characters typed on the 
keyboard of a terminal will appear on the terminal screen.  To perform a 
LAL test, follow these steps:

   1. Activate LAL.  This may be done in one of two ways:  First, by mov-

ing the upper front panel toggle switch RIGHT to “Analog”.  Second, 
by raising pin 18 on the RS-232 interface (note: be sure DIP switch 
S1-6 is enabled).  Once LAL is activated, the Model 1080ARC trans-
mit output is connected to its own receiver.  The “Test” LED should 
be lit.

   2. Verify that the data terminal equipment is operating properly and can 

be used for a test.