Hardware manual

5901 High Speed Dialup Modem Hardware Manual
October 19, 2007
13
Pin
Type
Description
Pin 9
5 Volt
Power
Input/
output
This pin may be connected to the 5V power supply by
installing jumper J1. This pin is a power source for an
external device when used as an output. It powers the
modem when used as an input.
This pin must NOT be connected if it is not used.
4.2.1 5901 Modem Connection to DTE
The serial cable that is provided with the 5901 modem is suitable for connecting the modem to a
DTE (Data Terminal Equipment) device such as a SCADAPack controller, TeleSAFE Micro16
controller or a SmartWIRE 5202 Communication controller.
Other DTE devices such as a personal computer may require a longer serial cable. Figure 3: RS-232
Wiring - 5901 (DCE) to DTE shows a typical serial connection.
DTE
5901 (DCE)
6
9
DCD
RxD
TxD
DTR
GND
DSR
RTS
CTS
5 Volt
2
3
4
5
7
8
1
DCD
RxD
TxD
DTR
GND
RTS
CTS
See device
specifications
for pin numbers
Pin 9 may be connected to the 5V
power supply. Use caution when
connecting to this pin.
DSR
Figure 3: RS-232 Wiring - 5901 (DCE) to DTE
All RS-232 wiring exceeding the length of the serial cable supplied with the modem must use
shielded cable. The shield should be connected to chassis ground at one end of the cable only. The
DE-9 connector shell is a good ground point. A maximum cable length of 50ft (15.2m) is allowed.
Failure to properly shield the cable may result in the installation not complying with FCC or DOC
radio interference regulations.
4.3 Telephone Line Connection
The telephone line typically connects to the RJ-11 modular jack, labeled P3. The RJ-11 jack mates
with a 4 pin modular plug with at least 4 contacts. This type of connector is common in the
telephone industry. Pins 2 and 3 are the tip and ring connection. Pins 1 and 4 are not used. See
Figure 4: 5901 Modem RJ-11 Connection, P6.
Alternately, the terminal block connection shown in Figure 5: 5901 Terminal Block Connection,
P3 allows direct wiring of the telephone line to the 5901 modem.