7
ATIM_ACW-DINRSM_UG_EN_V2.8
d.
Connecting the modem
Terminal blocks
Antenna (SMA)
Before connecting the product to mains power, connect the antenna: either a ½ wave whip
antenna (ref. ATIM ANT868-12FSC) or an external antenna
—
¼ wave (ref. ATIM ANT868-
14S4.0) with a metallic ground plane or ½ wave (ref. ATIM ANT868-12S3.8)
—
or a roof
antenna with a low-loss cable (ref. ATIM ANT868-BZ or ANT868-08).
WARNING
It is mandatory to connect the antenna before powering the product. Failure to do so may cause the product to malfunction
and become unusable.
Power supply (bottom terminal block)
The ACW-DINRSM must be supplied with a DC power supply between 10 V and 30 V that can provide a
minimum current of 100 mA.
RS485 (top terminal block)
The maximum cable length will depend on the type of serial link and the baud rate in use. A maximum length
of 1 meter is appropriate for all use cases.
For an RS485 connection, you have the option to activate the 120Ω termination resistor:
•
upward position (SMA side): resistor activated
•
downward position (USB side): resistor deactivated
USB
The USB connector allows you to configure the ACW with a PC and a USB cable. See section « Configuration
via USB » for more details.
Name
Description
Input / Output
GND
Earth/Ground (Gnd)
Earth
10/30V
Power supply between 10 V
and 30 V
Input (power supply)
NC
Not connected
/
Tx/BZ
RS485 BZ
Bidirectional/differential
Rx/AY
RS485 AY
Bidirectional/differential
NC
Not connected
/
