2.3. RF Connections
The RF jacks on the QMP1000 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
QMP1000 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 Diagrams on Page 6). 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 functional diagrams (Figure #1 and
Figure #2).
2.4. Amplifier Set-up
2.4.1. Amplifier LED Indicators
The MAXNET II QMP1000 Amplifiers have two LED indicators: PWR and ALM.
a) The PWR (Power) LED verifies that the amplifier module is receiving power from the MAXNET II Power Supply
through the 24 VDC Chassis Bus. The PWR LED is always solid green when the module is powered. If no powering
is available then the PWR LED is off. The PWR LED does not have a flashing condition.
b) The ALM LED will FLASH RED if there is a problem with the amplifier or if any of its monitored functions are beyond
the specified limits (e.g. absence of RF input signal)
Table #3: LED Status Indications
__________________________________________________
1
If the ALM LED is flashing red at a slow rate of approximately 1s on-1s off, this is indicative of a communications failure between this module and
the chassis. See Troubleshooting section.
STATUS
FLASHING
RED
1
SOLID
GREEN
OFF
LED
PWR
N/A
Power ON
Check Power
Supply
ALM
Alarm
N/A
Normal
2-2
MAXNET
®
II – QMP1000 Forward RF Amplifier – Installation & Operation Manual
CHAPTER 2: INSTALLATION
