ATX Maxnet II QMP 1000 User manual

QMP1000 Forward RF Amplier
Installation & Operation Manual
CCAP™
Com pliant
1.2 GHz

MAXNET®II is a registered trademark of ATX in the United States and/or other countries. Products or features contained herein may be covered by one or more U.S. or foreign
patents. Other non-ATX product and company names in this manual are the property of their respective companies.
Although every effort has been taken to ensure the accuracy of this document it may be necessary, without notice, to make amendments or correct omissions.
Specications subject to change without notice.

TABLE OF CONTENTS
Page
1. PRODUCT DESCRIPTION........................................................................................................................ 1-1
1.1. Functional Diagrams.......................................................................................................................... 1-2
1.2. Technical Specications .................................................................................................................... 1-3
2. INSTALLATION ......................................................................................................................................... 2-1
2.1. Product Inspection............................................................................................................................. 2-1
2.2. Module Installation into the Active MAXNET®II Chassis................................................................... 2-1
2.3. RF Connections................................................................................................................................. 2-2
2.4. Amplier Set-Up ................................................................................................................................ 2-2
3. STATUS MONITORING ............................................................................................................................. 3-1
3.1. Chassis Interface Options ................................................................................................................. 3-1
3.2. SCTE HMS MIB Software Denition of Module................................................................................. 3-1
3.3. Web Interface .................................................................................................................................... 3-1
3.4. Updating Active Chassis Firmware.................................................................................................... 3-2
3.5. Factory Reset .................................................................................................................................... 3-2
4. STATUS MONITORING FEATURES ......................................................................................................... 4-1
4.1. SNMP Parameters............................................................................................................................. 4-1
4.2. SNMP MIBs Required for QMP1000................................................................................................. 4-2
5. MAINTENANCE & TROUBLESHOOTING................................................................................................ 5-1
5.1. Maintenance...................................................................................................................................... 5-1
5.2. Troubleshooting................................................................................................................................. 5-1
6. SERVICE & SUPPORT.............................................................................................................................. 6-1
6.1. Contact ATX Networks....................................................................................................................... 6-1
6.2. Warranty Information ......................................................................................................................... 6-1
6.3. Safety ................................................................................................................................................ 6-1
MAXNET® II – QMP1000 Forward RF Amplier – Installation & Operation Manual i

Index of Figures and Tables
Figures
#1 Single Stage Forward RF Amplier Functional Diagram .............................1-2
#2 Dual Stage Forward RF Amplier Functional Diagram................................1-2
#3 Front & Rear Panel Pictures........................................................................2-1
#4 Front Panel Plug-ins ....................................................................................2-3
#5 Web Interface Parameter Page (example) ..................................................3-1
Tables
#1 Ordering Information....................................................................................1-1
#2 Technical Specications ..............................................................................1-3
#3 LED Status Indications ................................................................................2-2
#4 Plug-in PAD Specications ..........................................................................2-3
#5 Plug-in 1 GHz EQ Specications.................................................................2-3
#6 Plug-in 1.218 EQ Specications ..................................................................2-3
#7 Plug-in PAD/EQ Ordering Information .........................................................2-4
#8 Common Module Parameters......................................................................4-1
#9 QMP1000 SNMP Parameters......................................................................4-1
#10 General SCTE HMS MIBs Required ...........................................................4-2
#11 QMP1000 SCTE HMS MIBs Required ........................................................4-2
ii MAXNET® II – QMP1000 Forward RF Amplier – Installation & Operation Manual

PRODUCT DESCRIPTION
1. Product Description
The QMP1000 MAXNET II modules are Forward RF Ampliers, which offer various gains that are determined at the
time of ordering. The lower gain ampliers (17 dB and 21 dB gain) operate in a single stage manner as shown in the
functional diagram – Figure #1, Page 6. The higher gain ampliers (28 dB, 31 dB and 34 dB gain) operate in a dual stage
process as shown in the functional diagram – Figure #2, Page 6. The QMP1000 ampliers are dual-width modules, taking
up two slots in the Active MAXNET II Chassis and they are powered through a hot-swapping backplane. An appropriate
MAXNET II Power Supply in the Active MAXNET II Chassis powers these modules. The QMP1000 modules feature the
standard MAXNET II functionality including high-density packaging through the use of MCX coaxial cable connectors (F
connectors are available as option) in conjunction with Mini RG-59 Type coaxial cable. Also featured are: front access
alarm LED indicator, -20 dB test points and the capability of module status monitoring through SNMP based Managers. The
MAXNET II SNMP interface is HMS compliant.
Please refer to the web page for up-to-date specications – www.atxnetworks.com
Table #1: Ordering Information
MAXNET® II – QMP1000 Forward RF Amplier – Installation & Operation Manual 1-1
CHAPTER 1: PRODUCT DESCRIPTION
Part Number Description
QMP1000-17GP 1000 MHz, 17 dB GaAs Single Stage, MCX Connectors
QMP1000-21GP 1000 MHz, 21 dB GaAs Single Stage, MCX Connectors
QMP1000-28GP 1000 MHz, 28 dB GaAs Dual Stage, MCX Connectors
QMP1000-31GP 1000 MHz, 31 dB GaAs Dual Stage, MCX Connectors
QMP1000-34GP 1000 MHz, 34 dB GaAs Dual Stage, MCX Connectors
QMP1000-17GPF 1000 MHz, 17 dB GaAs Single Stage, F Connectors
QMP1000-21GPF 1000 MHz, 21 dB GaAs Single Stage, F Connectors
QMP1000-28GPF 1000 MHz, 28 dB GaAs Dual Stage, F Connectors
QMP1000-31GPF 1000 MHz, 31 dB GaAs Dual Stage, F Connectors
QMP1000-34GPF 1000 MHz, 34 dB GaAs Dual Stage, F Connectors

1.1. Functional Diagrams
Figure #1: Single Stage Forward RF Amplier Functional Diagram
Figure #2: Dual Stage Forward RF Amplier Functional Diagram
1-2 MAXNET® II – QMP1000 Forward RF Amplier – Installation & Operation Manual
CHAPTER 1: PRODUCT DESCRIPTION
RF
DETECTOR
+24 VDC
CHASSIS
COMM.
RF OUTPUT
RF INPUT
-20 dB OUTPUT
TEST POINT
-20 dB INPUT
TEST POINT
FAN
ACTIVE FUSE,
POWER & FAN
CTRL
PWR
ALARM
MONITOR & CONTROL
PAD EQPAD EQ
Single Stage Forward Amplifier
RF
DETECTOR
+24 VDC
CHASSIS
COMM.
RF OUTPUT
RF INPUT
-20 dB OUTPUT
TEST POINT
-20 dB INPUT
TEST POINT
ACTIVE FUSE,
POWER & FAN
CTRL
FAN
MONITOR & CONTROL
PWR
ALARM
PAD EQ
Dual Stage Forward Amplifier
PAD EQ

1.2. Technical Specications
Table #2: Technical Specications
MAXNET® II – QMP1000 Forward RF Amplier – Installation & Operation Manual 1-3
CHAPTER 1: PRODUCT DESCRIPTION CHAPTER 1: PRODUCT DESCRIPTION

CHAPTER 1: PRODUCT DESCRIPTION
1-4 MAXNET® II – QMP1000 Forward RF Amplier – Installation & Operation Manual
This page left intentionally blank.

INSTALLATION
2. Installation
2.1. Product Inspection
Carefully unpack the amplier module from the shipping box. If the box or amplier module is damaged, please notify the
freight company to make a damage claim. If you suspect that there is a problem with the amplier module that may affect it’s
safe operation, do not install such a suspect Amplier into the Active MAXNET II Chassis.
2.2. Module Installation into the Active MAXNET® II Chassis
Slide the dual-width QMP1000 amplier 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 amplier module to
properly mate to the active chassis back plane. If the module is installed properly, the amplier 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 amplier 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 amplier will start alarming (the front panel ALM (Alarm) LED
indicator will start ashing red), as there is no RF input signal. The amplier will stop alarming once RF signal is applied to the
input and all other parameters are within operating conditions.
Figure #3: Front & Rear Panel Pictures
Shown with MCX (left) and F (right) Rear Panel Connectors
MAXNET® II – QMP1000 Forward RF Amplier – Installation & Operation Manual 2-1
CHAPTER 2: INSTALLATIONCHAPTER 1: PRODUCT DESCRIPTION
QMP1000-17GPF
QMP1000-17GP QMP1000-17GPF
QMP1000-17GP

2.3. RF Connections
The RF jacks on the QMP1000 ampliers 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 amplier. 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. Amplier Set-up
2.4.1. Amplier LED Indicators
The MAXNET II QMP1000 Ampliers have two LED indicators: PWR and ALM.
a) The PWR (Power) LED veries that the amplier 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 ashing condition.
b) The ALM LED will FLASH RED if there is a problem with the amplier or if any of its monitored functions are beyond
the specied limits (e.g. absence of RF input signal)
Table #3: LED Status Indications
__________________________________________________
1 If the ALM LED is ashing 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
RED1
SOLID
GREEN OFF
LED
PWR N/A Power ON Check Power
Supply
ALM Alarm N/A Normal
2-2 MAXNET® II – QMP1000 Forward RF Amplier – Installation & Operation Manual
CHAPTER 2: INSTALLATION