3080/V24
124001UA
2-8
I
NSTALLATION
A
ND
O
PERATIONS
M
ANUAL
S
ETUP
& I
NSTALLATION
P
ATTON
E
LECTRONICS
C
O
.
DTR / DSR Forced Active (JP6 thru JP14)
DTR is tied to DSR on each of the Sub-Channel ports. If the device connected does not
supply a DTR but requires DSR (DTE) or does not supply DSR but requires DTR (DCE),
installing the forced DTR/DSR jumper (JP6-JP14) for the appropriate Sub-Channel will solve
this problem. The line is forced to +6V via an 100
Ω
resistor, providing isolation to any driver
that might be on the interface.
Channel
Jumper
Channel
Jumper
Master
JP6
5
JP11
1
JP7
6
JP12
2
JP8
7
JP13
3
JP9
8
JP14
4
JP10
FACTORY Test Jumpers (JP1, JP2 and JP3)
The three factory test jumpers JP1, 2 and 3, must be installed for the unit to properly function.
These jumpers are used in the manufacture and test of the product prior to shipment.
