2
DL169-IN-B – The circuit
Radiomodems DL169-IN-B
and its open version
DL169-IN
are built by the interface and supply card
RMO148
and the radiomodem
module
DL169
.
The
RMO148
card realises the following functions:
-
Power supply conditioning
. A step-down switching regulator give a stabilised voltage of 5 Vdc from an
input voltage between 8 to 36 Vdc. It feeds directly the RS232/RS485 interfaces and, through a drop dio-
de, the RF power amplifier. A 3.3 Vdc linear regulator is used for the DL 169 module.
-
Optoisolated input
for digital input requires a DC input from 5 to 24 V or AC input from 3.5 to 20 V.
The input impedance is of 2.2 k
Ω
, resistive.
-
Relay Output
, normally
Open
, can manage a 28Vac 0.5 A current or 60Vdc 1 A current
-
RS232
and
RS485
interfaces both on the
D-shell f
emale
connector
. The interface selection is achieved
by configuration software trough electronic switch. As shown in the following Fig. 1 the RS 232
interfaces utilises the connector pins from 2 to 8 while the RS 485 utilises the pins Nos. 1 and 9.
-
Radiomodem status
with a bi-colour LED normally
green
. The data flow into or out the unit causes the
color
change
(from
green
to
orange
) of this LED. During the configuration process this Led is
orange
.
A second
Red
Led is turned on during the transmission.
-
Antenna connection
with a
BNC female connector
.
DL169 MODULE –
The
DL169 Radiomodem used in this application is programmed with a specific
firmware version using the RTXEN, CONFIG, CH0, CH1, CH2 criteria to manage respectively:
-
Optoisolated Input
-
Output DATA Led
-
Relay output
-
RS 232 enable
-
RS 485 enable
The remaining criteria retain the original features. Detailed information on the module are available on the
DL169 manual.
CE DL169-IN-B
RADIOMODEM VHF
DL169-IN CE
The equipment is FREE USE for telemetry & command, AMR, tracing and tracking of goods
Regulatory standards: EN 300 220-1 v2.3.1 , EN 300 220-2 v2.3.1 , EN 60950-1: 2001+All A11 2004 ,
EN 301 489-1/3
