Cisco Model GS7000 4-Port Node 1 GHz with 42 54 Split Installation Guide
Chapter 4 Setup and Operation
64
9 If all four of the node's output ports are to have equal output levels.
To achieve an output level of 54 dBmV @1218MHz / 50.7 dBmV @ 1002 MHz
- with 27 dbmV output from the optical receiver, install a 15 dB attenuator pad
- with 27 dbmV output from the optical receiver, install a 15 dB attenuator pad
into the optical interface board just above the receiver module.
Go to step 13.
10 If the node's output RF ports are to be driven at different levels, the port with the
highest output level should be used to set up the node. Measure signal level at
the forward RF test point, on the amplifier module, to identify the port with the
highest level output signal. Verify the output power level is correct using the OIB
Pad as in Step 9. Increase the attenuator pad value at the FWD PORT OUT PAD
locations on the RF amplifier module to reduce the output level of the port,
which needs to be driven at a lower level than the port used to setup the node.
See Appendix A - Technical Information for pad selection charts.
the forward RF test point, on the amplifier module, to identify the port with the
highest level output signal. Verify the output power level is correct using the OIB
Pad as in Step 9. Increase the attenuator pad value at the FWD PORT OUT PAD
locations on the RF amplifier module to reduce the output level of the port,
which needs to be driven at a lower level than the port used to setup the node.
See Appendix A - Technical Information for pad selection charts.
11 The SHO GS7000 Node is set for 22 dB of linear tilt between 54 and 1218 MHz.
This is done by using 3 different EQ’s. A common EQ of 10.5dB value and 2 other
12dB EQ for Left side (port 1 & 2) and Right side (port 4 & 5). If your network
requires a different tilt value, remove the field replaceable common 10.5 dB
equalizers and replace with equalizers of the appropriate value. See Forward
Equalizer Chart (on page 102). If you want port 1 & 2 to have different tilt than
port 4 & 5, then replace the appropriate 12dB EQ with equalizer of needed value
to change the tilt of the appropriate left or right ports.
12dB EQ for Left side (port 1 & 2) and Right side (port 4 & 5). If your network
requires a different tilt value, remove the field replaceable common 10.5 dB
equalizers and replace with equalizers of the appropriate value. See Forward
Equalizer Chart (on page 102). If you want port 1 & 2 to have different tilt than
port 4 & 5, then replace the appropriate 12dB EQ with equalizer of needed value
to change the tilt of the appropriate left or right ports.
12 Continue to Reverse Path Setup Procedure or close the housing according to
Opening and Closing the Housing (on page 68).