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DRAKE DRMM4 Manuel d'utilisateur

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2
FRONT PANEL CONTROLS and INDICATORS
F1
F2
F3
F4
Figure 1
F4 - Mode Switch
Sets the type of channel, CATV or Broadcast
TV (“BC TV”). The "+100" position of the switch
sets a leading “1” for CATV channels 100
through 135. See also Item F3 for setting the
channel number.
For example: For example:
Setting for CATV Setting for CATV
channel "125"- channel "75"-
F1 - POWER/ERROR Indicator
Lights when the unit is connected to the
required source of DC power via the rear panel
DC INPUT connector. A flashing condition
indicates an invalid channel setting or other
conditions that would cause the unit to operate
on an invalid channel. The RF output is
switched off for flashing (ERROR) conditions.
F2 - SIGNAL Indicator
Lights when a signal is present.
F3 - Channel Number Switch
Sets the desired operating channel for standard
CATV channels 02 through 135 or Broadcast
TV channels 02 through 69. See also Item F4
which sets the type of channel (CATV or
Broadcast TV) and sets the leading “1” for
CATV channels 100 through 135.
DDC864 DIGITAL DOWNCONVERTER 1
TM
12 POSITION RACK MOUNT POWER SUPPLY
DDC864
DOWNCONVERTER
TM is a trademark of the R.L. Drake Company
is a registered trademark of the R.L. Drake Company
Copyright 2006 R.L. Drake Company P/N: 3852391A-1-2006 Printed in the U.S.A.
The R.L. Drake DDC864 is a low noise
downconverter designed for translating
digital signals from their off-air or CATV
channel to a 44 MHz IF output. The output of
the DDC864 can be connected to a DUC
series upconverter to place the digital signal
on a new output channel.
When the DDC864 is used with the DUC550
or DUC860, all input/output channel
combinations are usable except "on
channel" conversions.
When the DDC864 is used with the DUC864,
"on channel" conversions, (the same input
channel on the DCC and output channel on
the DUC) are acceptable.
The DDC864 is optimized for use with ATSC
8VSB modulation in a 6 MHz wide channel
assignment. The passband is designed for
optimized operation with 8VSB signals in an
adjacent channel environment. For translation
of QAM signals, the Drake model QQP860 is
preferred for this task
.
The DDC864 provides low noise figure and low
phase noise as well as a flat passband to
minimize signal deterioration.
PS8
POWER SUPPLY
DUC864
GAIN
PWR/
ERROR
CATV
+100
BC
TV
CATV
21
DDC864
GAIN
PWR/
ERROR
CATV
+100
BC
TV
CATV
25
SIGNAL
DUC864
GAIN
PWR/
ERROR
CATV
+100
BC
TV
CATV
21
DDC864
GAIN
PWR/
ERROR
CATV
+100
BC
TV
CATV
25
SIGNAL
DUC864
GAIN
PWR/
ERROR
CATV
+100
BC
TV
CATV
21
DDC864
GAIN
PWR/
ERROR
CATV
+100
BC
TV
CATV
25
SIGNAL
DUC864
GAIN
PWR/
ERROR
CATV
+100
BC
TV
CATV
21
DDC864
GAIN
PWR/
ERROR
CATV
+100
BC
TV
CATV
25
SIGNAL
CATV
TV
BC
+100
CATV
GAIN
DDC864
25
CATV
TV
BC
+100
CATV
ERROR
PWR/
GAIN
DUC864
35
CATV
TV
BC
+100
CATV
ERROR
PWR/
GAIN
DUC864
28
CATV
TV
BC
+100
CATV
GAIN
DDC864
25
DRMM4
SIGNAL
ERROR
PWR/
SIGNAL
ERROR
PWR/
DDC864
GAIN
PWR/
ERROR
CATV
+100
BC
TV
CATV
25
SIGNAL
25 75
CATV
+100
CATV CATV
+100
CATVBC
TV TV
BC
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Résumé du contenu

Page 1 - Figure 1

2 FRONT PANEL CONTROLS and INDICATORSF1F2F3F4Figure 1F4 - Mode SwitchSets the type of channel, CATV or BroadcastTV (“BC TV”). The "+100

Page 2 - INSTALLATION

REAR PANEL CONNECTIONS 3Figure 2R1R2R3R1 - IF OUTPUT ConnectorThis is the 44 MHz IF output. The level is+30 dBmV.R2 - DC INPUT ConnectorThis

Page 3 - TABLE 2:

EIA/NCTANumericEquivalent86878889909192939410010110210310410510610710810911011111211311411511611711811912012112212312412512612712812913013113213313413

Page 4 - WARRANTY AND SPECIFICATIONS

SPECIFICATIONS 7Specifications subject to change without notice or obligation.54 to 864 MHz;OFF-AIR channels 2 to 69,CATV channels 2 to 135.-3

Page 5

THREE YEAR LIMITED WARRANTYTHREE YEAR LIMITED WARRANTYTHREE YEAR LIMITED WARRANTYTHREE YEAR LIMITED WARRANTYTHREE YEAR LIMITED WARRANTYR.L. DRAKE COMP

Page 6

2 FRONT PANEL CONTROLS and INDICATORSF1F2F3F4Figure 1F4 - Mode SwitchSets the type of channel, CATV or BroadcastTV (“BC TV”). The "+100

Page 7 - Figure 2

6 BROADCAST TV CHANNEL INPUT FREQUENCIESTABLE 2: BC TVCenter of ChannelFrequency (MHz)57636979851771831891952012072132345678910111213VHF BROA

Page 8

EIA/NCTANumericEquivalent86878889909192939410010110210310410510610710810911011111211311411511611711811912012112212312412512612712812913013113213313413

Plus de documents pour Processeurs DRAKE DRMM4

Voir le document DRAKE DRMM4 Manuel d'utilisateur
DRAKE DRMM4 Manuel d'utilisateur (8 pages)
Voir le document DRAKE DRMM4 Manuel d'utilisateur
DRAKE DRMM4 Manuel d'utilisateur (8 pages)

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