User`s guide

Installing the DX LCD Display 3-17
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DX LCD
Display
DX LCD Display
Serial Cable
Modem 1
Modem 2
25-pin
Connector
4-Wire Cable
25-pin
Connector
9-pin
DX/PC
Adapter
9 to 25-pin Modem Cable
9-9-pin
Gender Changer
9-pin
Connector
(Female)
(Transmit
+)
TX+
(Transmit
-) TX-
(Receive
+) RX+
(Receive -) RX-
(Transmit -) TX-
(Transmit +)TX+
(Receive -) RX-
(Receive +)RX+
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Pair 2
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Pair 1
DX-9100/9121
Controller
9-pin
Connector
9 to 25-pin Modem Cable
(Maximum 15 m (50 ft)
(Maximum distance: 3.2 km (2 miles)
Using shielded cable will reduce
distance by 66%, but will prevent
transmission errors in noisy
electrical environments.)
Maximum 15 m (50 ft) Total Cable Length
from Modem 2 to DX LCD Display
Figure 3-14: Extension Cabling
11. Set the S1 switch on the Modem 2 (modem at the DX LCD
Display unit) circuit board to DTE.
12. Set the RTS/DTR control jumper to DIS position.
13. Plug in the power supply for each modem.
14. Apply power to the DX LCD Display and it will scan for the DX
address and come online.