Data Sheet

SPECIFICATIONS
Power Requirements
120 V AC, 0.20 A (Model 6455)
220 V AC, 0.10 A (Model 6455E)
230 V AC, 0.10 A (Model 6455I)
240 V AC, 0.10 A (Model 6455B)
+24 V DC, 450 mA
(24 V DC operation is jumper selected)
Power Supply
24 V DC (nominal)
RF Test Point
-20 dB to ±1.0 dB
Dimensions
3.25 in. x 4.0 in. x 6.5 in.
(8.25 cm x 10.16 cm x 16.51 cm)
Operating Temperature (Ambient)
32°F to 120°F
(0°C to 50°C)
Weight
4 lbs 10 oz. (2.1 kg)
Specifications shown reflect typical equipment performance at
stated reference levels in the recommended operating
configuration. Specifications are based on measurements made
in accordance with NCTA Practices for Measurements on Cable
Television Systems using standard frequency assignments and
are referenced to 68°F (20°C).
REQUIRED ACCESSORIES
• Plug-in pad, 1 required. Available in 0.5 dB steps from
0 to 20.5 dB. Model PP-* (* denotes pad value), specify value.
• Forward Equalizer, 1 required. Available in 1.5 dB steps from
0 to 27 dB. Model EQ860-* (* denotes equalizer value),
specify value (EQ1000 in development)
OPTIONAL ACCESSORIES
• Pre-drilled P-3 panel with front access test points for rack
mounting, includes cable assemblies and connectors –
part # 502417
• Pre-drilled P-3 panel without test point access – part #381773
• 24 V DC power cable, 10 feet -part #467080
Scientific-Atlanta, Inc. http://www.sciatl.com
United States: 4261 Communications Drive, Norcross, GA 30093; Tel: [phone]; Fax: [phone]
Canada: 7725 Lougheed Highway, Burnaby, BC V5A 4V8; Tel: [phone]; Fax: [phone]
United Kingdom: Home Park Estate, Kings Langley, Herts WD4 8LZ, England; Tel: [phone]; Fax: [phone]
Singapore: 1 Claymore Drive, #08-11 Orchard Towers, Singapore 229594; Tel: [phone]; Fax: [phone]
Hong Kong: Suite 56 & 57, 5/F New Henry House, 10 Ice House Street, Central, Hong Kong; Tel: [phone]; Fax: [phone]
88D053Z © 1996 Scientific-Atlanta, Inc. All rights reserved. Printed in USA. 0996M
Model 6455 (46-1000 MHz) Headend Driver Amplifier
Typical Distortion
1
– 152 analog NTSC channels
GENERAL SPECIFICATIONS
Model Number 6455
Bandwidth 46-1000 MHz
Gain (minimum) 16.0 dB
Flatness (peak to peak) 1.0 dB maximum
M0694-01
-20 dB
TEST POINT
PAD
EQUALIZER
GAIN
BLOCK
IN OUT
Frequency (MHz)
55.25 547.25 745.25 859.25
CTB (dB) 71.98 63.68 60.39 59.33
CSO (dB) 72.93 65.02 65.66 61.91
XMOD (dB) 65.30 67.50 80.70 65.10
C/N 50.12 47.50 46.39 46.72
Input / Output Return Loss
Frequency Range (MHz) Minimum Return Loss (dB)
46-450 15.3
451-650 13.5
651-750 12.6
751-850 11.7
851-1000 10.3
ORDERING INFORMATION
Input Voltage Model Number Part Number
120 V AC 6455 500212
220 V AC 6455E 500213
230 V AC 6455I 541723
240 V AC 6455B 500214
NOTE: Order by part number
Notes:
1. Distortions measured at 20° C at 38 dBmV flat
2. Typical operating level in mid 30’s (dBmV)
10-56