ConneXions II V7 MAC Mains, Multi Port Version
CONV7MAC 05/98
Issue 1
5
Installation
The following procedure must be adhered to when installing the ConneXions paging system. Ensure you
have taken into consideration all of the above information before selecting the location for your transmitter.
If in doubt please feel free to telephone the technical helpline on 01803 864569.
1
Remove the cover from the ConneXions II transmitter unit by slackening the four Pozi head
screws located at the top and bottom of the unit (see Diagram 1).
2
Carefully lift off the cover and set aside.
3
The transmitter should be fixed to an even wall surface using suitable screws fitted through the
holes provided in the chassis plate. Hold the chassis up to the chosen location and with the aid of a
pencil mark the position of the mounting holes.
Warning:
Do not use the chassis plate as a template for drilling the holes into the wall. Hammer drills
vibrating through the chassis may irreparably damage the quartz crystals on the printed circuit boards.
4
Place the ConneXions transmitter over the mounting holes and secure the unit with suitable
screws. Check that the chassis plate does not bend and that the screws do not snag or pinch any
of the internal cables.
5
Connect the antenna to the unit via the BNC connector located at the top of the housing. If the
antenna is an external antenna, or an antenna which is separate from the transmitter unit itself,
ensure that the previous criteria covered under the section headed
Siting of the Hardware
, have
been strictly adhered to (also see section headed
Other Antennas
).
6
It is important to note that due to the number of interfaces brought out to the 9-way ‘D’ connector,
great care should be taken to use only the lines which are applicable to your installation. Failure to
comply with this instruction will almost certainly DESTROY the unit.
In your application the transcoder has been configured for a total of three RS232 inputs.
PL3 and PL2 SERIAL PORTS (9 way D type plug)
PIN
SIGNAL
DIRECTION
1
N/C
2
RECEIVE DATA
(RX) IN
3
TRANSMIT DATA
(TX) OUT
4
DATA TERMINAL READY (DTR) OUT
5
GROUND (GND)
6
N/C
7
REQUEST TO SEND (RTS) OUT
8
CLEAR TO SEND
(CTS) IN
9
+5V (PL2 only)
(for Scope peripherals)
PL1 SERIAL PORT (25 way D type plug)
PIN
SIGNAL
DIRECTION
2
TRANSMIT DATA
(TX) OUT
3
RECEIVE DATA
(RX) IN
4
REQUEST TO SEND (RTS) OUT
5
CLEAR TO SEND
(CTS) IN
7
GROUND
(GND)
20
DATA TERMINAL READY (DTR) OUT
As information passes only from the host equipment to the ConneXions transcoder, you will only need to
read the DTR line which if high shows that power is applied to the Connexions unit. The RTS line will be
high when the transcoder is ready to receive data. The ConneXions RTS line should be connected to the
host CTS line to facilitate correct handshaking.
Prior to connecting the data cable(s), thoroughly check the
system pin connections as shown above.
