Harris VCA6800+ - Page 31

VCA/VDA/VEA6800+ Installation and Operation Manual 19
Chapter 2: Installation and Configuration
Preliminary—Contents are proprietary and confidential. Do not photocopy or distribute.
Setting the Clamping Mode
Follow this procedure to set the jumper for soft-, hard- or no-clamping
mode:
1. Locate the jumper block on the module. Figure 2-1 on page 17
shows the location of this jumper block.
2. Place the jumper on the pin that corresponds to soft-, hard- or
no-clamping mode. See Figure 2-4.
Figure 2-4. VCA6800+ Clamping Mode Jumper Block Pin
Placement
Adjusting Potentiometers
The VCA6800+ module has two separate, adjustable potentiometers
(“pots”) for gain and EQ mode adjustment. Figure 2-1 on page 17
shows the location of these pots.
A multi-turn pot allows you to adjust gain for a range of –3 dB to +3
dB. See Figure 2-5 on page 20.
• To increase the gain, turn the pot clockwise.
• To decrease the gain, turn the pot counterclockwise.
A second multi-turn EQ pot allows you to adjust cable equalization. See
Figure 2-5 on page 20.
• To obtain more equalization, turn the pot clockwise.
• For less equalization, turn the pot counterclockwise.
Soft clamp
Hard clamp
No clamp
No clamp
mode
Hard clamp
mode
Soft clamp
Hard clamp
No clamp
Soft clam
p
m
ode
Soft clamp
Hard clamp
No clamp