137001UA
2-3
Setup & Installation
P
ATTON
E
LECTRONICS
C
O
.
3012-14-18/V24
I
NSTALLATION
A
ND
O
PERATIONS
M
ANUAL
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
OFF
OFF
OFF
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