3-6

Configuration and Installation

Figure 3-3 shows the equalizer slope versus equalizer value information presented in Table 3-1 as a graph. The amount of cable equals the equalizer value.

Figure 3-3

Equalizer slope versus cable

Refer to Figure 3-3 to determine the proper cable equalizer for the BHA-100*. For example, the input tilt derived from a channel near 550 MHz and a channel at the low end of the bandpass is

6dB. According to the graph, the appropriate (closest) equalizer is model SFE-100-8.

7Install the selected cable equalizer in the amplifier.

8Connect a signal level meter to the amplifier output and tune the meter to the highest frequency on the system near 550 MHz.

9Turn the gain control fully clockwise, and then reduce the gain by 1 or 2 dB, as indicated on the signal level meter.

10The signal level should be at the proper output level as noted on the system drawings. If the level is excessive, install JXP-*B pads to reduce the signal to the proper level.

11Tune the signal level meter to the low end of the band. Turn the slope control fully clockwise, and then reduce the channel level by approximately 2 dB with the slope control. The output tilt of the amplifier, between 52 MHz and 550 MHz, should be 10 dB.

12If necessary, use the slope control to make corrections of 1 or 2 dB. Change the cable equalizer if greater changes are needed to achieve the desired output tilt. Use a higher value equalizer if the tilt is less than desired and a lower value if it is more than is required.

13Replace the inner and outer covers of the amplifier.

BHA-100* Broadband House Amplifier Installation Manual