Cisco Compact Outdoor Amplifier Model 93412 Guide De Montage

 

4010865 Rev C 

Installation Instruction Compact Amplifier 93412 

3 

Use 77140-xx (0-18dB in 1 dB step) to select attenuation and equalizing at the  input 

Use a 0 dB link type 74069 to adjust the amplifier to a flat output level. The equalizer is 
mounted and the output level has now been pre-equalized. 

The gain can be adjusted with an interstage attenuator (1 to 6 dB) in order to minimize the 
influence on the system values. 

With active reverse path, an equalizer type 74140-xx is placed in the plug-in field for reverse 
path equalizer. Please note the test point and signal injection point of the reverse path are 
referring to the input of the reverse path.  

Use 77140-xx (0-18dB in 1 dB step) to select attenuation and use 77140-xx (0-15dB in 1 dB step) 
to select equalizing at the output. 

If the reverse path transmission is not used, a termination type 77140-75 is mounted in the 
reverse path output attenuation plug-in field.  

In order to add further attenuation in the reverse path, an attenuator type 77140-xx (0-20 dB in 1 
dB step) is mounted in the plug-in field. If no attenuation is requested, 77140-00 is mounted and 
if a termination of the reverse path is requested, 77140-75 is mounted (only necessary if diplex 
filters have been mounted). 

With this transponder it is possible to monitor the amplifier output level, temperature and 
power supply. Furthermore the built-in reverse path switch can be controlled. 

The amplifier is supplied with 24-65 or 35-90 V AC (depending on power supply) either via a 
coaxial cable (max. 7 A) or directly at the AC input (max. 10A). On delivery, the ports are 
equipped with isolation fuses.