Two Person Return Balancing; Forward Path - C-COR Flex Max901e Equipment Manual

Two Person Return Balancing

Figure 5.11
Return Balancing
Cascade
5
5-22 Flex Max901e 1GHz Trunk and Bridger Amplifiers
Note This method of return balancing requires two technicians communicating
between two successive amplifier locations. Balancing signals are injected into a
forward path output testpoint of the Balancing Amplifier and measured at the return
input testpoint of the Measuring Amplifier.
Measuring Amplifier
Connect the signal level meter to the return
input testpoint of the associated input port.
CAUTION RF signal levels greater than +45 dBmV @ 1 NTSC channel loading at the
hybrid can damage amplifier active components. Derate maximum input level
according to actual channel loading (for example, +26 dBmV @ 79 NTSC channel
loading) (+26 dBmV = +86 dBµV).
Note The return path is not active until the PADs and return EQ accessories are
installed.
Note Testpoints are –20 dB referenced to the associated port input or output level.
Refer to the housing label for testpoint loss.
Balancing Amplifier
Return Path
Trunk Amplifier: connect the
Bridger Amplifier:
STATION REV EQ and
connect the signal
generator to
P2/P3 FWD O/P TP
signal generator to
PORT 4 FWD O/P TP
STATION REV PAD
plug-in location
1502154 Rev D