DRAKE EH24 Manuel d'instruction - Page 5
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TABLE OF CONTENTS
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Table of Contents / Specifications
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Setup and Programming/ Software Flow Chart
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SPECIFICATIONS
SDE24 Dual Program Encoder Module
Analog Interface
Composite video Inputs
2 composite inputs, one for
each program
Composite Video Input Level
1 Volt p-p ± 3 dB
S Video Inputs
2 S Video connectors, one for
each program
Composite or S Video select
User selectable for each
program input
Audio Inputs, for 2 programs
RCA type for L and R audio
channels, 2 sets
Audio Input Level
1 Vrms or 2 Vrms user
selectable and user adjustable
audio gain ± 15dB
MPEG Encoder
Encode Format - #1 input
MPEG2 or MPEG4 H.264,
selectable
Encode Format - #2 input
MPEG2 only
Constant Bitrate: 1 Mbps to 8
Encoding Bitrate
Mbps
Brightness, Contrast, Satura-
Video Adjustments
tion, Hue
Audio Encoder
Selectable Types
AC-3 Dolby digital Stereo OR
MP2 - MPEG1, Layer 2
AC3 Encoder
Manufactured under license
from Dolby Laboratories.
Output bitrate
320 kbps
Table of Contents / Specifications
SPECIFICATIONS (Continued)
Output
EH24 CHASSIS
Program Filtering and
Grooming
Multiplexer
MPEG Program
Numbers
ASI Output
QAM Modulator
Output Symbol Rate
Modes/FEC
I/Q Phase Error
MER
Up Converter RF OUT
Output Frequency
Range
Channel Plans
Frequency Stability
Output Level
Output Level Accuracy
Output Impedance
Spurious outputs
Broadband Noise
Phase Noise
GENERAL
AC Power
Operating Temperature
FCC Approvals
Mechanical
EH24
SDE24
The output of each SDE24 module is
connected internally to the multiplexers that
are included in the EH24 chassis.
Encoded programs may be disabled or sent
to one or both output ports - ASI or QAM,
user selectable. The output timing is
restamped and null packets are managed as
required.
Built in multiplexer circuitry combines the
outputs of all enabled encoders in an EH24
into multiprogram transport streams, one to
the QAM output and one to the ASI output.
MPEG program numbers in the output
transport stream will be assigned sequen-
tially, corresponding to the encoder number.
The leftmost encoder input, as viewed from
the rear panel, will be # 1. If the RS232
remote access is used, the MPEG and
virtual channel (major and minor) numbers
may be user selected to any desired MPEG
legal numbers.
Any or all of the enabled encoders may be
directed to the ASI output by means of the
user selectable program filter.
Any or all of the enabled encoder outputs
may be directed to the QAM Modulator by
means of the user selectable program filter.
1 to 7 MSps
ITU-A: 16, 32, 64, 128, 256, 512,1024 QAM
ITU-B (DigiCipher): 64, 256, 1024 QAM
Less than 1 degree.
Greater than 38 dB with blind EQ
54 to 1002 MHz
CATV STD, HRC, IRC, BROADCAST
± 5ppm
45 dBmV to 61 dBmV, adjustable
± 1 dB
75 Ohms, RL 14 dB or better, 54 - 1002 MHz
- 60 dBc from 40 to 1000 MHz
Less than -12 dBmV (6 MHz BW@ ± 12
MHz)
-101 dBc @ 10 kHz offset
90 to 132 VAC / 47 - 63 Hz, 70 W maximum
0 deg to + 50 deg C
The EH24 and the encoder modules have
been verified as complying with part 15 of
the FCC rules.
14 1/4" D x 3 1/2" H x 19" W, 9.5 lbs
8" D x 1 3/8" W x 3 1/4" H, 0.5 lbs
Specifications subject to change without notice or obligation.
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