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4-3
MTPX Plus Twisted Pair Matrix Switchers • Programmer’s Guide
Front panel Configuration port
N
 ThisportishardwiredforRS-232only.
The optional 9-pin D to 2.5 mm mini jack TRS RS-232 cable, part #70-335-01
(figure 4-2) can be used for connection to the Configuration port.
6 feet
(1.8 m)
Part #70-335-01
5
1
9
6
Sleeve (Gnd)
Ring
Tip
9-pin D Connection TRS Plug
Pin 2 Computer's RX line Tip
Pin 3 Computer's TX line Ring
Pin 5 Computer's signal ground Sleeve
Figure 4-2 — Optional 9-pin TRS RS-232 cable
N
 ThisportisindependentoftherearpanelRemoteportandisnotaffectedby
changestotherearpanelport’sprotocol.Thisfrontpanelport’sprotocolcanbe
changedviaSIScommandcontrolonly.SeetheCommand/ResponsetableforIP
SIScommands,laterinthischapter,tocongurebothportsunderSIScontrol.