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Chapter 3: Operation
Page 17
Adjust LCD brightness: Use keys number 7 (BR+) and 9 (BR-) to adjust the LCD
screen’s brightness.
B. Measure signal strength (Vpp) and attenuation:
Video signal strength (attenuation): With the tester displaying the video signal
(see A), press the “1” (IRE) key. The following is displayed:
MAX Vpp: The peak-to-peak amplitude of the video signal. The larger the video
signal, the brighter the picture. 1 Vpp is minimum.
AVERAGE Vpp: The average peak-to-peak amplitude of the video signal.
SYNC SIGNAL: A camera’s sync pulses synchronize the camera with the monitor.
NO VIDEO: No signal, “No Video” will be displayed.
Example of attenuation: If the Vpp at the camera is 1.25 Vpp, and the Vpp at the
end of the cable is 1.15 V, the attenuation is 8%.
C. Testing and controlling the camera motion (PTZ):
Connection. Connect the camera to the tester as shown in Figure 3-2, diagram A.
The camera’s PTZ wires plug into the T+ and T- ports on the tester’s RS-422/485 jack
(use the terminal block/alligator adapter).
ADDRESS:001 > Enter the PTZ camera’s ID (001–255)
VIDEO: NULL > Video format PAL/NTSC/NULL
Enter the camera’s ID.
Press “ADDR” and input the PTZ camera’s ID.
Press “SET” to save the address.
Press “MENU” to hide the menu display.
Hold “MENU” to exit the video/PTZ function and return to the Main Menu.