Videotec SW42REM, Руководство по эксплуатации

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Pag. 14 SW42REM/SW82REM9904
Maintenance
The SW42REM/SW82REM sequential switcher does not need a special maintenance.
Make sure it always rests on a solid base, and that the power supply and connection cables do not hinder the operator.
Switch off the appliance to clean it. Clean the keyboard at regular intervals with a cotton dry cloth, avoiding the
use of detergents or wet cloths.
Solution of installation problems
Even if the SW42REM/SW82REM sequential switcher is easy to use, some problems may arise during installation,
configuration or use
Problem Possible cause Remedy
No output video signal is present Power supply disconnected Check the power supply cable
The fuse is blown Replace the fuse
Monitor cables not connected Check the monitor cables
The keyboard does not control
the sequential switcher Incorrect connection Follow the procedure of the connection
test between the keyboard and the
sequential switcher, indicated below
The manual channel displays
letters at random on the screen Lack of input signal on channel 1 at the
switching on Give a signal to input 1, switch the
sequential switcher off and then on
The input signal on channel 1 is too weak
or the brightness is too high Check the input signal level on channel 1
and eventually change it with another
signal
The writing on the manual
channel is not adjusted Incorrect adjustment of TR1 and TR2
Trimmers Operate on TR1 and TR2 Trimmers
Keyboard-sequential switcher connection test
To identify the causes of the wrong communication between the keyboard and the sequential switcher (receiver) carry
out the following tests:
•
test of direct connection between the keyboard and the sequential switcher (receiver)
•
test of connection cable.
Direct connection between keyboard and sequential switcher:
•
connect the keyboard and the sequential switcher (receiver) via direct telephone cable
If the problem persists, it is likely that the sequential switcher (receiver) communications are faulty. Contact the supplier.
If the test is successful, the problem concerns the connection cables: check the connections to the Rjjack connector
blocks, according to the schemes in the chapter Connectors and Connections.
If the communication problems persist, contact the supplier.
Specifications
Power supply: 230V~ 50 Hz
Power consumption: 4 W
Dimensions: 190x110x50 mm
Weight SW42REM: 800g
Weight SW82REM: 850g
Finish: aluminium case coated with epoxy powder
Video: 4/8 inputs - 75 Ohm 1 Vpp
2 outputs 75 Ohm 1 Vpp
Band frequency: 5 Mhz
Signal/noise relation : 50 dB
Fuse: 50 mA 250V T