DLM4100 User’s Manual
P/N 161-09977-001B
2
Operating Instructions
The DLM4100 is a compact dial-up modem designed and manufactured to operate in full industrial applications.
It is powered with an input voltage range of +8V to +15VDC. A 120VAC to unregulated 12VDC wall transformer
power supply has been provided (24VDC versions also available). The operating temperature range of this
device is 0
°
to 70
°
C. The (ET) Extended Temperature model is rated at -40
°
to +85
°
C.
Any device connected to the modem must be set for a 10-bit word such as:
Data Bits
Stop Bits
Start Bits
Parity
8 1 1 None
7 1 1 Even/Odd
7 2 1 None
Connections
Cable connections are all made on one end of the unit. The DB-9 female (see pinout below) on the left is for the
RS-232 data.
Note:
RS-485 and RS-422 models are also available
The supplied wall transformer plugs into the barrel jack for supplying power to the unit. For alternate power
methods, see barrel jack pinout below. The RJ-11 jack on the right is the telephone line connection. Only the
center two lines are used.
DB-9 for the RS-232 data port. The port is setup as a DCE device and the pins are:
DB-9 Female
Description
Pin 1
Carrier Detect
Pin 2
Data Out of modem RS-232 port
Pin 3
Data Into modem RS-232 port
Pin 4
N/C
Pin 5
Ground
Pin 6
N/C
Pin 7
N/C
Pin 8
N/C
Pin 9
N/C
The 12 VDC power jack plug for input power.
12VDC (P-5 Barrel Jack)
Center Pin
+8 to 15VDC in
Outer
Ring
Ground
