Time

PATTON ELECTRONICS CO.

3012-14-18/V24

INSTALLATION AND OPERATIONS MANUAL

137001UA

Installation

Select an appropriate location accessible to and within six feet of an AC power outlet. The outlet must have a ground pin receptacle for product warranty. The DCE- to-DTE cabling between each attached device and the MSD should be “Straight Through”, shielded and terminated with male DB-25 connectors. Sub-Channels are marked “PORT 1” through “PORT 8”; the Master Port is marked “MASTER”. If any terminal has a priority service mode, ensure it is connected to the port connector designated “PORT 1” on the rear panel of the MSD. Secure other terminals to be serviced to the remaining PORT connectors. Connect the MODEM to the connector designated “MASTER”.

Equipment Grounding (Switch Pos 6)

Position 6 on the DIP switch provides for grounding interconnection in those systems requiring a connection between (Frame Ground) and (Signal Ground). Connect ONLY if required.

Anti-Streaming (Switch Pos 1,2,3,4)

The maximum data block size is user selectable via the internal DIP switch positions 1, 2, and 3. As shown below eight block sizes are provided to the user. To disable anti-streaming set position 4 to OFF. The maximum block size is normally defined at the time of installation. The MSD will isolate the affected sub-channel until the streaming condition has been corrected, then automatically re-establish communications as before.

3	2	1	Time
OFF	OFF	OFF	.02 sec

OFF	OFF	ON	.04 sec

OFF	ON	OFF	.08 sec

OFF	ON	ON	.30 sec

ON	OFF	OFF	1.3 sec

ON	OFF	ON	5.0 sec

ON	ON	OFF	20.0 sec

ON	ON	ON	40.0 sec

2-3	Setup & Installation

40.0 sec