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Instructions Video 2-wire transmitter and receiver
GB
Set-up receiver with 2-wire technology
4.3. Setting the Input Impedance
To set the input impedance used for trans-
mitting the video signal from transmitter to
receiver, please connect an ohmmeter to the K3
terminals A and B and adjust the trimmer TP1
until it matches the cable impedance. In case
you are using a Cat-5 cable, this should be 100
ohms (cf. chapter “Type of Cable” ).
4.4. Setting the Video Output
The video output is controlled by the trimmer
and the DIP switch. For set-up, we suggest using
an oscilloscope.
Trimmer
Function
TP1
Setting the input impedance
TP2
Setting symmetry (CMRR)
TP3
Setting linear gain
TP4
Setting gain LF
TC1
Setting gain
TC2
Fine tuning gain HF
TC3
Fine tuning gain MF
TC4
Fine tuning gain LF
Please interrupt the power supply prior to
taking these steps, unless expressly noted
otherwise.
The configuration described as follows will
result in settings for optimal operation:
▸
Factory settings
▸
Setting the input impedance
▸
Setting the video output
4.2. Factory settings
The factory settings do not include any amplifi-
cation, settings or equalization. Prior to starting
set-up, we recommend to achieve factory
settings by setting all the trimmers and the DIP
switch to the following positions:
▸
Bring trimmer TP2 to the central position
▸
Bring trimmer TP3 to the central position
▸
Turn trimmer TP4 anti-clockwise and bring it
to the central position
▸
Turn switches 1 to 8 on the SW1 to the OFF
position
▸
Turn switches 9 to 15 on the SW2 to the OFF
position
▸
Turn switch 16 on the SW2 to the ON position
▸
Set trimmers TC1, TC2, TC3, TC4 to minimum
capacitance values
