4-10 FlexNet
®
700 Series Line Extender Rev F
4
5. Equalize the RF signal:
a. Connect a Signal Level Meter (SLM) to the -25dB FORWARD BALANCING T.P.
testpoint.
b. Measure the signal levels of both forward balancing carriers. These levels will be
referred to as the Measured High and Low Balancing Carrier Levels. Record these
levels as shown in the box that follows. Calculate System Tilt, Measured Tilt, and
Equalization Value.
c. If the Equalization Value is positive, an SEQ is needed. If negative, an SCS is needed.
Using the appropriate tables in Appendix C, Reference Tables, select an accessory with
a tilt as close to the Equalization Value as possible. For a full explanation of the
selection process and accessories, see When the Equalization Value is Known on page
C-1.
d. If necessary, remove the accessory or stripline from the STATION FWD EQ area and
install the selected cable equalizer or cable simulator.
6. Attenuate the RF output port:
a. Measure the new Forward High Balancing Carrier Level and record the adjusted value
as shown in the box that follows. Calculate the PAD Value.
b. Select an SPB PAD that has a flat loss within ±0.5 dB of the PAD Value.
c. If necessary, remove the accessory or stripline from the FORWARD PAD and install
the selected attenuator (PAD).
Note: Testpoint losses are 25dB for 1GHz housings.
– =
System Forward High
Balancing Carrier Level
System Forward Low
Balancing Carrier Level
System Tilt
– =
Measured Forward High
Balancing Carrier Level
Measured Forward Low
Balancing Carrier Level
Measured Tilt
– =
System Tilt Measured Tilt Equalization Value
– =
Measured Forward High
Balancing Carrier Level
System Forward High
Balancing Carrier Level
PAD Value
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