Motorola BHA-100S/P-R 用户手册

3-6 

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. 

 

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 

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

7 

Install the selected cable equalizer in the amplifier. 

8 

Connect a signal level meter to the amplifier output and tune the meter to the highest 

frequency on the system near 550 MHz. 

9 

Turn the gain control fully clockwise, and then reduce the gain by 1 or 2 dB, as indicated on 

the signal level meter. 

10 

The 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. 

11 

Tune 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. 

12 

If 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. 

13 

Replace the inner and outer covers of the amplifier.