Laskomex CD-2502 Series Installation, Service And Programming Manual page 24

6.5 Installation of distributor CVR–1 and CVR–2
It is not recommended to use with MV645x series monitors.
It is recommended that wires sections connecting distributor with monitor connected
to sockets MON1 and MON2 have comparable length. The same principle refers
to wires connected to sockets MON3 and MON4.
To ensure wave adjustment, which is the main condition of getting clear and free
of interference picture, at the end of this line load in form of resistor should be
connected of value equal to the impedance the wire used in this line. In distrib-
utors there are joints with jumpers allowing the connection of resistor of selected
value (100, 124 lub 136 Ω). between terminals C+, C-. This resistance should be
switched only in one distributor which was installed at the end of line C+,C-. If
distortion is visible on the screen or the picture is not clear or pale amplifying and
signal correction should be switched on. For MON1 and MON2 outputs correction
and amplification are switched by jumpers in joint J2, while for output MON3 and
MON4 – by jumpers in joint J3.
W1
MON MON MON
1 3
2
JP2
JP3
JP1
W2
CVR-1
nr clamp color
1 T + orange-white
2 T - orange
3 Vc green-white
4 L + blue
5 L - blue-white
6 GND green
7 C + brown-white
8 C - brown
JP1
Input impedance 136
Input impedance 124
MON
4
Input impedance 100
JP2 JP3
Figure 14: Configuration of distributor CVR-x
function
uniwersal output
uniwersal output
power supply: +10VDC
uniphone line
uniphone line
ground
video signal
video signal
Figure 15: Joint MON-1 of distributor CVR-1
6 INSTALLATION AND ACTIVATION
Band correction
Without band correction
Gain 0 dB
Gain +2 dB
Gain +4 dB
Plug
8
1
1 8
Plug in accordance with EIA/TIA 568B standard
23
W1
MON3
MON1 MON4
MON2
JP2 JP3
JP1
W2
CVR-2