In full duplex mode, the Tx pins are tri-state except during transmission times. This may
cause problems when interfacing to some Fibre Optical converter units. Check out the
Commissioning notes for ways of overcoming these problems. Appendix B.
In 2 wire Half Duplex mode (RS485), the Rx Pins are used to transmit data to the MIC unit.
The washer connections can be used to operate a relay in the power supply unit, which in turn
can activate a pump.
INSTALLATION ON SITE
Mounting the unit
The MIC-440 can be mounted either way up i.e. with the camera ball up or down.
During commissioning the unit can be driven in tilt to ensure the picture is the correct way
up.
Note:
There are no internal adjustments required to set the picture the correct way up.
The unit is supplied with an industrial standard 4” (101.6mm) PCB mounting base and can be
mounted on standard CCTV mounting brackets or on tailor made mounting brackets.
Forward Vision CCTV
. Can supply suitable brackets if required.
M8 Stainless steel nuts, bolts and washers should be used to secure the base of the MIC unit
to the selected mounting bracket. Ensure the bolts are tight
Earthing the camera
.
The camera and camera housing are electrically isolated so it is important to make sure that a
good safety earth is connected. This safety earth should be a bonding connection to the
camera’s outside case.
Lightning protection.
The MIC-440 unit construction is capable of coping with secondary lightning strikes but in
installations likely to be exposed to electrical storms it is recommended that external
lightning protection units should be fitted.
A good earth bonding connection to the case itself will provide protection against damage
from secondary strikes. Where there is a risk of a primary strike hitting the camera housing
directly it is recommended that a separate lightning conductor be fitted within 0.5 Meters of
the camera and at least 1.5 Meters higher than the camera.
CONNECTING WITH FV CCTV CAMERA TERMINAL BOX.
For Non-hazardous areas the following terminal boxes can be used.
Product No 703/240D for 240v AC input.
703/115D for 115v AC input.
702/24D for 24v AC input.
702/12D for 12v or 24v DC input for battery operation.
This terminal box (shown in figure 5). Provides all the support functions for connecting the
camera to third party equipment. It comprises of
:
MIC1-440 Instruction Manual Page 8 of 43 Issue 2
