Rose Electronics Porter User Manual

Page 34

PORTER INSTALLATION AND OPERATIONS MANUAL

Table VII Loopback Test Connectors

Porter parallel loopback connector Porter serial loopback connector

male 36 pin Centronics connector Male 25 pin subminiature D connector

1 -------------------- 8

2 -------------------- 3

2 -------------------- 13

6 -------------------- 20

3 -------------------- 32

4 -------------------- 12

5 -------------------- 31

6 -------------------- 36

7 -------------------- 14

9 -------------------- 11

10 -------------------- 34

Reloading Factory Defaults
There are two ways to reload the factory default configuration. The first is if an error

occurs in powering up the unit and the unit halts with error 4 (see TABLE VI). To reload

the defaults, first, push the SELECT switch then push the ADVANCE switch; the unit is

then ready for operation.
The other method of reloading the factory defaults is through the ‘short test’ diagnostic

mode of the Porter. This mode is entered by powering the unit off, pressing (and holding)

both the ADVANCE and SELECT switches, and then powering up the unit. Hold the

SELECT switch down. When the LEDs stop on test 4 (see TABLE V), release the SELECT

switch and press the ADVANCE switch; the Porter will load the factory default

configuration. The unit stays in the ‘short test’ diagnostic mode and continuously cycles

through the four tests. To resume normal operation, you must power the unit off and

back on. The unit is now set at its factory defaults. You must reconfigure the Porter, if

necessary, to correspond to your equipment settings.
Maintenance and Repair
The exterior surface of the unit may be wiped with a damp cloth to keep it clean. The unit

does not contain any jumpers or serviceable parts inside. Opening the unit invalidates the

warranty except in the case of an authorized memory upgrade or firmware update. Any

malfunction with the unit should be reported to a factory authorized repair center for

service. Any discrepancies in the operation of the unit according to this manual should

be reported to the Technical Support department of Rose Electronics.