Tritech International Ltd
Tornado Camera OIM
Issue 3
TIL – Eng – Spec – 033
Page 9 of 14
SETTING UP PROCEDURES
Power supply
Caution!
To adjust:
Disconnect the camera module
Power the PSU board with 30Vdc at J1 pin 3
Connect an accurate voltmeter to J4 pin 6 & 5
Set-up VR1 to read between 9v and 9.5v on the voltmeter
This setting will give you the right voltage level for the camera module under load.
Long line amplifier (Rev B)
If there is a need to drive a long coaxial cable then the long line amplifier board is required.
First remove the jumper at J6 (Amp Bypass) fitted beside the connector J3 of the PSU board. Fit the long
line amplifier driver board (3605) in connector J3 (if not allready supplied fitted to the camera). A jumper can
now be fitted in one of the three possible positions to set the compensation circuit for the long line amplifier.
Position 1- S1 (pins 5 to 6)_____unity gain (standard buffered video output)
Position 2- S2 (pins 3 to 4)______high frequency boost (standard buffered video output with colour boost)
Position 3- S3 (pins 1 to 2)______high frequency and DC boost gain variable using VR1(As with setting S2
but allows manual adjustment of signal amplitude via variable resistor at VR1 upto a maximum of 2Vp-p)
The power supply output is controlled through a potentiometer VR1 fitted on the topside
of the PSU/Mother board. It is set at the factory and does not require any further
adjustment. If for any reason it becomes necessary to readjust it
CARE must be taken
not to feed the camera module with more than 9.5v as an absolute maximum.
