ATX Maxnet II QMP200 Installatie- en bedieningshandleiding - Pagina 7
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2.
Installation
2.1.
Product Inspection
Carefully unpack the amplifier module from the shipping box. If the box or amplifier module is damaged, please notify the
freight company to make a damage claim. If you suspect that there is a problem with the amplifier module that may affect it's
safe operation, do not install such a suspect Amplifier into the Active MAXNET II Chassis.
2.2.
Module Installation into the Active MAXNET
Slide the dual-width QMP200 amplifier module into an open slot in the Active MAXNET II Chassis, one that spans two
single-width module locations beginning with an odd number (indicated by a white marker on the chassis), until the module
drops into its lock position. The module must be inserted into an odd number slot in order for the amplifier module to
properly mate to the active chassis back plane. If the module is installed properly, the amplifier will make contact with the
24 VDC power bus in the chassis and if there is a MAXNET II Power Supply Module installed in the chassis, and it is plugged
into the respective power source, the module's PWR (Power) LED indicator will light green. To remove an amplifier module
from the chassis, gently lift the front handle and pull back on the module until it is clear of the chassis guide slot.
Initially, when inserted in the Active MAXNET II Chassis, the amplifier will start alarming (the front panel ALM (Alarm) LED
indicator will start flashing red), as there is no RF input signal. The amplifier will stop alarming once RF signal is applied to the
input and all other parameters are within operating conditions.
2.3.
RF Connections
The RF jacks on the QMP200 amplifiers front/rear panel are MCX [female]. As an option, the RF jacks on the rear panel
can be F type [female]. There will be one RF input and one RF output at the rear, plus two front panel 20 dB test points per
QMP200 amplifier. The output (OUT) test point is –20 dB relative to the RF output. The input (IN) test point is –20 dB relative
to the RF input, if input PAD and EQ are 0 dB (see Functional Diagram). The RF Input connector on the rear panel is the
top connector and the RF Output connector on the rear panel is the bottom connector. Connect a test jumper from output or
test point ports to a signal level meter or spectrum analyzer to verify signal quality and adjust RF levels before connecting
subsequent equipment.
The operator can adjust the RF level by inserting PAD's and EQ's as shown in the Functional Diagram (Figure 1).
MAXNET
II – QMP200 Return RF/IF Amplifier Manual – Installation & Operation Manual
®
Figure #2: Front & Rear Panel Pictures
Shown with MCX (left) and F (right) Rear Panel Connectors
II Chassis
®
CHAPTER 2: INSTALLATION
2-1