1 2 3 4
+
-
+ - D1 D0
9V
RS RF
USB
5 6 7
- RxD TxD
Power LED
J11
J7
Installation method
Best coverage is achieved when receiver has line of sight to the transmitters. Every obstacle be-
tween the devices will attenuate the signal and thus decrease range. On the other hand metal planes
will cause refl ections which can in some cases increase the range.
3
INSTALLING
Device can be connected using either RS-485 or RS-232 buses. Each
of these is described in its own subchapter. Power supply connections
are also described separately in each subchapter.
USB bus can be used in case that the standard cable gland is replaced
by large one (not delivered). If it’s desirable to use either RS-485 or
RS-232 buses the device must be jumpered accordingly.
Connections
Power
The supply voltage 8...28 VDC is connected using 1.3 mm DC jack (centre connector positive) or
by using detachable screw post connector terminals 1 (+) and 2 (-). Both supply voltage connec-
tors are internally connected. The receiver is protected against wrong polarity of the supply volta-
ge. The supply voltage’s negative terminal is also used as ground for RS-485 and RS-232.
RS-485
When used with RS-485 bus jumper J11 has to be set according to following picture.
Device needs 8...28 VDC power supply which is connected either with 1.3mm DC-jack, with
positive center pole, or with terminal connections 1 (+) and 2 (-). DC-jack and terminal con-
nector is connected in parallel. Device is protected against wrong polarity of power supply.
RS-485 can be easily added to computer using Nokeval DCS770 or DCS771 USB – RS-485 con-
verter or RCS770 USB/RS-232 – RS-485 converter. RS-485 is connected to terminal connections 3
(D1), 4 (D0) and 2 (Gnd). Wrong connection of polarity doesn’t harm the device.
Antenna connection
Antenna is connected to device’s BNC connector. Antenna is fi rst pushed into the BNC connector
by aligning it with two guide posts after which it is turned 90 degrees clockwise.
RS485
RS232
Power supply
8...28 VDC