Cisco Dual SFP Gigabit QAM Modulator Quick Reference Manual

9. Verifying RF Output
To verify that you have established the correct RF output for the RF OUT
port, follow these steps.
a. Connect an RF OUT port on the modulator to a spectrum analyzer.
b. Verify the output level for the frequency and the channel using a
spectrum analyzer.
c. Repeat steps a and b for the remaining RF OUT port connections.
Dual SFP GQAM Front Panel
Use the following diagram to assist you with the installation of the modulator.
Note: The front panel is identical for both the AC and DC dual SFP GQAM models.
MAJOR ALARM
MINOR ALARM
CW
GQAM Modulator Model D9479-12 AC DUAL SFP
Dual SFP GQAM Back Panels
Use the following diagrams to assist you with the installation of the modulator, as well as the location of the connection ports.
D9479-12 120/230V AC DUAL SFP
POWER 120/130V 60/50Hz 2.5A RF OUT 1 RF OUT 2 RF OUT 3
T
T4H, 250V
-A -V
D9479-22 48V DC DUAL SFP
48 VOLTS DC RF OUT 1 RF OUT 2 RF OUT 3
FUSE FUSE
-48 VDC
160w
CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE
REPLACE ONLY WITH SAME TYPE 5.0 A SLO BLO 250 V FUSE
Rack Mount Brackets
Use the following diagram to assist you with the installation of the modulator using the supplied notched rack mount brackets.
CAUTION: Take care to install the notched rack mount brackets as shown in the following picture. Inverting the brackets will block
airflow, which will cause the unit to overheat and damage the unit.
10. Verifying Audio and Video on a DHCT
After sessions are defined on the DNCS, verify that audio and video are
performing properly on a local Digital Home Communications Terminal
(DHCT).
RF SEL
FREQ LEVEL CW OPTIONS ENTER
RF OUT 4
ASI IN 1 ASI IN 2 ASI IN 3 ASI IN 4
GIGABIT
LINK
ETHERNET CRAFT
PORT
BACKUP MAIN
RF OUT 4
GIGABIT ASI IN 1 ASI IN 2 ASI IN 3 ASI IN 4 10/100 BASE T
ETHERNET CRAFT LINK
PORT
BACKUP MAIN
Dual SFP Gigabit QAM Modulator
T12555
10/100 BASE T
ACTIVE
GND
ACTIVE GND
T12556
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Third party trademarks mentioned are the property of their respective owners.
Product and service availability subject to change without notice.
© 2006-2008, 2012 Cisco Systems, Inc. All rights reserved.
T13737
September 2012
MAJOR ALARM
MINOR ALARM FREQ
CW
GQAM Modulator Model D9479-12 AC DUAL SFP
5030 Sugarloaf Parkway, Box 465447
Lawrenceville, GA 30042
Printed in USA
Quick Reference Guide
RF SEL
LEVEL CW OPTIONS ENTER
678.277.1
www.
Part Number 78-4002206-01Rev D
.com