Blonder tongue HE-12 Series User manual
INSTRUCTION MANUAL
One Jake Brown Road
Old Bridge, NJ 08857-1000 USA
www.blondertongue.com
©2009 Blonder Tongue Laboratories, Inc. All rights reserved. Specifications are subject to change without notice. Trademarks are the property of their respective owner.
HE-12/HE-4
Modular Headend Chassis
Model Stock No. Description
MIRC-12V 7715 Chassis
MIRC-4D 7711 Chassis
MIRC-4CUBE-CH 7703 Chassis
Modular Headend Products
Model Stock No. Description
MIPS-12C 7722C Power Supply
MIRC-4CUBE-PS 7702 Power Supply
AMCM-860B 7766B Agile Modulator
AMCM-860HB 7766HB Agile Modulator (Horizontal)
AMCM-860S 7766S Stereo Agile Modulator
AMCM-860HS 7766HS Stereo Agile Modulator (Horizontal)
MICM-45C 7797C A/V Modulator
MICM-45S 7797S Stereo A/V Modulator
MIDM-806C 7740C Demodulator
DHDC-DV 6264A Digital High Definition Downconverter (Vertical)
DHDC-DH 6261A Digital High Definition Downconverter (Horizontal)
DHDC-UV 6265A Digital High Definition Upconverter (Vertical)
DHDC-UH 6262A Digital High Definition Upconverter (Horizontal)
AMM-806 7763 Agile Micro Modulator
MSBC 7727 Sub-Band Block Converter
651204500J
2HE-12/HE-4
Instruction Manual
We recommend that you write the following information in the spaces provided below.
The information contained herein is subject to change without notice. Revisions may be
issued to advise of such changes and/or additions.
Blonder Tongue Laboratories, Inc.
One Jake Brown Road
Old Bridge, NJ 08857
Printed in the United States of America.
All product names, trade names, or corporate names mentioned in this document are
acknowledged to be the proprietary property of the registered owners.
This product incorporates copyright protection technology that is protected by U.S. patents and other
intellectual property rights. Reverse engineering or disassembly is prohibited.
3HE-12/HE-4
Instruction Manual
Table of Contents
....................................................................................................... 4
.............................................................................................................................. 6
2.1 REVISION HISTORY & REASON ...................................................................................................................................... 6
2.2 PRODUCT APPLICATION & DESCRIPTION...................................................................................................................... 6
............................................................................................................................................. 7
.................................................................................................................. 8
3.1 UNPACKING................................................................................................................................................................... 8
3.2 INSTALLATION................................................................................................................................................................ 8
.................................................................................................................................................................... 8
............................................................................................................ 9
4.1 GENERAL ....................................................................................................................................................................... 9
.............................................................................................................................................. 10
....................................................................................................................................... 11
4.3.1 ASI INPUT MODULE ................................................................................................................................................................11
4.3.2 8VSB/QAM INPUT MODULE ...................................................................................................................................................12
................................................................................................................................12
................................................................................................................................13
4.3.3 QAM MENU OPTIONS.............................................................................................................................................................14
...................................................................................................................................................15
.......................................................................................................... 17
.................................................................................................... 19
4HE-12/HE-4
Instruction Manual
Safety Instructions
➥ Read all safety and operating instructions before you operate the unit.
➥ Retain all safety and operating instructions for future reference.
➥ Heed all warnings on the unit and in the safety and operating instructions.
➥
➥ Unplug the unit from the AC power outlet before cleaning. Use only a damp cloth for cleaning the exterior of the unit.
➥ Do not use accessories or attachments not recommended by Blonder Tongue, as they may cause hazards, and will void the warranty.
➥ Do not operate the unit in high-humidity areas, or expose it to water or moisture.
➥ Do not place the unit on an unstable cart, stand, tripod, bracket, or table. The unit may fall, causing serious personal injury and damage to the
unit. Install the unit only in a mounting rack designed for 19” rack-mounted equipment.
This reminder is provided to call the CATV System Installer’s attention to Article 820-40 of the NEC that provides guidelines for
close to the point of cable entry as practical.
The STOP sign symbol is intended to alert you to the presence of REQUIRED operating and maintenance
(servicing) instructions that if not followed, may result in product failure or destruction.
The YIELD sign symbol in intended to alert you to the presence of RECOMMENDED operating and maintenance
(servicing) instructions.
The LIGHTNING flash symbol is intended to alert you to the presence of uninsulated "dangerous voltage"
within the product's enclosure that may be sufficient magnitude to constitute a risk of electrical shock.
5HE-12/HE-4
Instruction Manual
Safety Instructions - continued
➥ Do not block or cover slots and openings in the unit. These are provided for ventilation and protection from overheating. Never place the
unit near or over a radiator or heat register. Do not place the unit in an enclosure such as a cabinet without proper ventilation. Do not mount
equipment in the rack space directly above or below the unit.
➥ Operate the unit using only the type of power source indicated on the marking label. Unplug the unit power cord by gripping the plug, not the
cord.
➥ The unit is equipped with a three-wire ground-type plug. This plug will fit only into a ground-type power outlet. If you are unable to insert the
plug into the outlet, contact an electrician to replace the outlet. Do not defeat the safety purpose of the ground-type plug.
➥ Route power supply cords so that they are not likely to be walked on or pinched by items placed upon or against them. Pay particular attention
to cords at plugs, convenience receptacles, and the point where they exit from the unit.
➥ Be sure that the outdoor components of the antenna system are grounded in accordance with local, federal, and National Electrical Code (NEC)
➥
storm, or when the unit is left unattended and unused for long periods of time, unplug it from the wall outlet and disconnect the lines between
the unit and the antenna. This will prevent damage caused by lightning or power line surges.
➥ Do not locate the antenna near overhead power lines or other electric light or power circuits, or where it can fall into such power lines or circuits.
When installing the antenna, take extreme care to avoid touching such power lines or circuits, as contact with them can be fatal.
➥ Do not overload wall outlets or extension cords, as this can result in a risk of fire or electrical shock.
➥ Never insert objects of any kind into the unit through openings, as the objects may touch dangerous voltage points or short out parts. This could
cause fire or electrical shock.
➥ Do not attempt to service the unit yourself, as opening or removing covers may expose you to dangerous voltage and will void the warranty. Refer
all servicing to authorized service personnel.
➥
❏ The power supply cord or plug is damaged;
❏ Liquid has been spilled, or objects have fallen into the unit;
❏ The unit has been exposed to rain or water;
❏ The unit has been dropped or the chassis has been damaged;
❏ The unit exhibits a distinct change in performance.
➥ When replacement parts are required, ensure that the service technician uses replacement parts specified by Blonder Tongue. Unauthorized
substitutions may damage the unit or cause electrical shock or fire, and will void the warranty.
➥ Upon completion of any service or repair to the unit, ask the service technician to perform safety checks to ensure that the unit is in proper
operating condition.
Returning Product for Repair (or Credit)
A Return Material Authorization (RMA) Number is required on all products returned to Blonder Tongue, regardless if
the product is being returned for repair or credit. Before returning product, please contact the Blonder Tongue Service
www.blondertongue.com for further information.
6HE-12/HE-4
Instruction Manual
Modular Headend Chassis
MIRC-12V Description
The MIRC-12V is a professional quality modular headend system designed to maximize rack space. The 2 RU MIRC-12V
chassis will house up to 12 single width modules and one MIPS-12C power supply. Modular components consist of
modulators and demodulators. These modular components are fully shielded and are field installable. The MIRC-12V
chassis allows the compact modules to be added from the front of the chassis without removing the chassis from the
AMCM and DHDC series units.
MIRC-12V Specifications
Mechanical
MIRC-4D Description
The 1RU MIRC-4D chassis includes the modular power supply and holds up to four modules. The chassis (Stock No. 7711)
is compatible with all modules.
MIRC-4D Specifications
Mechanical
MIRC-12V Chassis
MIRC-4D
MIRC-4D
MICM-c
AUDIO
VIDEO
POWER
A/V
RF
CH
BLONDER
TONGUE
65
MICM-c
AUDIO
VIDEO
POWER
A/V
RF
CH
BLONDER
TONGUE
65
MICM-c
AUDIO
VIDEO
POWER
A/V
RF
CH
BLONDER
TONGUE
65
MICM-c
AUDIO
VIDEO
POWER
A/V
RF
CH
BLONDER
TONGUE
65
Connectors/Impedance
Accessories Supplied
AC Power Cable, 6 ft., IEC, USA
7HE-12/HE-4
Instruction Manual
MIRC-4CUBE-CH Description
The MIRC-4CUBE-CH is a standalone version of the MIRC-4. It can be used in any installation where modulators
are required and no standard headend rack is available. The CUBE system consists of a chassis (MIRC-4CUBE-CH),
power supply (MIRC-4CUBE-PS) and any combination of up to four modules.
MIRC-4CUBE-CH Specifications
MIRC-4CUBE-PS Specifications
Connectors/Impedance
Indicators
Accessories Supplied
Specifications MIPS-12C (Stock #7722C) (Typical)
Mechanical
MIRC-12V Chassis with MIPS-12C Power Supply
1
2
MIPS-12C Power Supply Connections
All the connectors on the power supply are located on the rear panel.
1. AC INPUT - The power supply accepts standard 100 to 250 VAC inputs.
8HE-12/HE-4
Instruction Manual
AMCM-860B MHz Agile Micro Modulator
Description
The AMCM-860B is a professional quality agile audio/video modulator with an output frequency
range of 54-860 MHz. It joins Blonder Tongue’s impressive family of modular headend components
and works in conjunction with the MIRC-4D and MIRC-12V rack chassis, MIRC-4CUBE-CH and MIPS-
12C power supply.
The unit provides a modulated aural & visual carrier on any channel in the 54 to 860 MHz range.
panel selection. Channel tuning is easily accomplished with the use of front panel switches following
electronically via microprocessor.
The AMCM-860 dissipates twice the wattage in comparison to other Blonder Tongue HE-12 modulators
into an existing MIRC-12 configured with MIPS-12 power supplies (Stock No. 7722 or 7722B). These
power supplies can only support one (1) AMCM-860. Installing more than one AMCM-860 will cause
changed to the new MIPS-12C (Stock #7722C) power supply. The “C” version power supply can easily
be identified by the presence of fan vents on the front panel.
A further enhancement to our HE Series product line is the MIRC-12V (Stock #7715) chassis. It is
designed to provide increased ventilation for improved heat dissipation.
9HE-12/HE-4
Instruction Manual
Specifications AMCM-860B (Typical)
Mechanical
1.15 x 3.5 x 7.5 in.
29 x 89 x 191 mm
Connectors
Controls
Push-Button Switches, UP/DOWN
Indicators
Video
Video Signal-to-Noise Ratio,
Audio
10 HE-12/HE-4
Instruction Manual
Operating Controls and Indicators
1. Stereo Indicator - Lit when video and stereo
audio are present.
2. Audio/Video Ratio Adjustment -
Adjustment of the A/V Ratio is permitted
from approximately -17 dB (full clockwise
position) to approximately -10 dB (full
counterclockwise position) by rotating the
potentiometer.
3. Video Adjustment - Adjustment of the Video Modulation Level is permitted by rotating the
potentiometer.
4. Video Over Modulation LED Indicator
5. Audio Adjustment - Adjustment of the Audio Modulation Level is permitted by rotating the
potentiometer.
6. Audio Over Modulation LED Indicator
7. Up/Down Buttons - Used to set the desired channel or mode.
8. +100 Indicator - Lights when channel settings are 100 -135.
9. Channel ENT Button - Enter button used to enter a desired channel or mode.
- Potentiometer adjustment used to set the output level. Has a range of
15 dB, optimum performance with a 10 dB adjustment.
11. Video Input
12. Right Stereo Audio In - RCA Connector
13. Left Stereo Audio or Mono In - RCA Connector
14. Power Connector
Programming the Unit
Programming a Channel
1. Navigate to the desired channel number by depressing the pUP and qDN buttons.
2. Press ENTER when you reach the desired channel setting. This will tune the modulator output to the corresponding
channel frequency for this entry.
a. The LED display will blink continuously during the channel programming process and will not change the output
frequency the unit is programmed until ENTER is depressed.
b. The unit has a special feature that alerts an operator of an inadvertent or desired change to the channel display by
flashing the LED readout. The LED display will continue to flash for 30 seconds if ENTER is not depressed and then
will return to the display of the previously programming channel entry setting.
It is strongly recommended to use the Blonder Tongue MIPS-12C or the MIRC-4D
power supplies with the AMCM-860. It is also recommended to use the optional
860 units in the MIRC-12V chassis. A rack space above and below the chassis unit
is suggested for heat dissipation and air flow.
7
1
2
9
3
4
6
STEREO
A/V AUDIO
VIDEO
AMCM-860H
UP
DN +100
ENT
CHANNEL
RF
Level
10
58
Rear Panel
VIDEO
IN
RF
OUT
P
O
W
E
R
11
14
13
12
STEREO
RIGHT
LEFT
MONO
15
AUDIO IN
AMCM
A/V
RF
Level
ENT
STEREO
860
AUD
7
1
10
+100
UP DN
CH
VID
2
9
8
53
4
6
11HE-12/HE-4
Instruction Manual
Operating Mode Selection
1. Simultaneously depress pUP and qDN for approximately 5 seconds.
2. The Channel LED display will switch to the operating mode selection.
3. Use pUP or q
a. C = STD CATV
b. H = HRC
c. I = IRC
4. After selecting the desired mode depress ENTER to set the mode.
5. The unit will return to the channel display mode.
a. Programming will reflect the mode chosen – See Appendix A for a detailed frequency plan.
b. The programming mode will also flash continuously during the programming process. The LED display will
continue to flash for 30 seconds if ENTER is not depressed and then will return to the display of the previously
programming channel and mode entry setting.
Troubleshooting - AMCM-860
seconds and then revert back to the previous CH entry.
Possible Error Condition Scenarios
1. An Error Condition may occur when a channel number was accidentally altered by changing the push button switch to a
number that is different from the output channel set in memory, or if there was a switch malfunction.
2. An Error Condition may occur when a user sets a new mode and the previously programmed channel is not in the new
mode’s channel range.
Correction Suggestions
1. Check that the Channel Display is set to the desired channel and reset as appropriate
2. Check that the unit is set to the appropriate desired operating mode
3. Verify the unit output on a spectrum analyzer
4. Disconnect and reconnect power to the unit
If an error condition continues to be displayed, unit should be replaced and serviced.
Jumper 7
Pin
1 2 3
1
2
3
3 2 1
Jumper 6 Jumpers 9, 11 & 10
Jumper 2
Ö
Stereo PCB
MONO STEREO
Stock No. 7766B Stock No. 7766S
J2 - PIN 2-3 J2 - PIN 1-2
J6 - PIN 2-3 J6 - PIN 1-2
J7 - PIN 2-3 J7 - PIN 1-2
12 HE-12/HE-4
Instruction Manual
54-860 MHz (Broadcast 2-13, Cable 14-135)
-11 to -19 dB continuously adjustable
(aeronautical channels)
Video
Audio
75 µs Pre-emphasis (MICM-45C)
in Stereo Configuration w/o pre-emphasis
1.0 at 25 kHz Deviation
Specifications MICM-45 (Typical)
Power Requirements
Mechanical
Connectors/Impedance
Controls
Indicators
MICM-45 Modulators
Description
television cameras, video tape recorders, or television demodulators.
makes the MICM-45 perfect for use in adjacent channel systems.
The MICM-45C takes baseband audio and video and modulates these signals onto the desired output channel. The MICM-
45S takes baseband L/R audio and video and modulates these signals into the desired output channel. The heterodyne
conversion process used in the MICM-45 employs a crystal referenced, PLL synthesized local oscillator. This guarantees rock
of 0.7 to 2.5 V p-p.
The MICM-45C has field defeatable audio pre-emphasis to provide stereo compatibility with any external BTSC stereo
generator providing a composite stereo baseband output.
channel. All other features and specifications are identical to the MICM-45C except as noted below.
13HE-12/HE-4
Instruction Manual
Pre-emphasis Jumper
MONO
Position 1-2 = Stereo
Postion 2-3 = Mono
Position 1-2 = Disable
Postion 2-3 = Enable
123
ENABLE
DISABLESTEREO
123
MICM-45C comes factory set for audio pre-emphasis enabled.
1
5
3
4
2
DC Input
GND
Operating Controls and Indicators - MICM-45
All operating controls are located on, or are accessible from the front panel.
1. Audio - Adjusts the aural carrier modulation.
1A Audio - Aural carrier modulation control/overmodulation indicator.
2. Stereo Indicator
3. Video - Adjusts the modulation percentage.
3A Video - Modulation control/overmodulation indicator.
4. Power - The green LED indicates power is present and the fuse is good.
5. A/V
6. Channel - The modulator is factory aligned to the channel number indicated.
7.
carriers to the final drive amplifier.
Rear Panel
All the connectors on the Modulator are located on the rear panel.
1. Video Input - The modulator accepts standard negative sync video at a 0.7 to 2.5 Vp-p level.
2. Audio Input - The modulator accepts 140 mV RMS for 25 kHz peak deviation (MICM-C).
Left audio input for MICM-S only.
3. P o w e r
4. Right Audio Input for MICM-S only. Connector not used in MICM-C (capped)
5 .
MICM-c
AUDIO
VIDEO
POWER
A/V
RF
CH
BLONDER
TONGUE
65
MICM-s
AUDIO
VIDEO
POWER
A/V
RF
CH
BLONDER
TONGUE
65
1 1A
3A
3
4
5
7
6
2
14 HE-12/HE-4
Instruction Manual
VIDEO
IN
2
1
JP 2
JP 1
123
Pre-emphasis Jumper
MONO
Position 1-2 = Stereo
Postion 2-3 = Mono
Position 1-2 = Disable
Postion 2-3 = Enable
123
ENABLE
DISABLESTEREO
123
MICM-45B comes factory set for audio pre-emphasis enabled. There are three (3) MICM-45B PC Board layout revisions
available. Choose the applicable one from the diagrams below.
1-2 position = Enabled . . . Jumper must be set to 1-2 position. . .
2-3 position = Disabled . . .
1
1
223
123
1
1
223
123
123 123
Pre-emphasis Jumper
EnableDisable
123
15HE-12/HE-4
Instruction Manual
AMM-806 — Agile Micro Modulator
Description
The AMM-806 is an economical CATV agile audio/video modulator. It joins Blonder Tongue's family of modular headend
components and works in conjunction with the MIRC-12V rack chassis and MIPS-12C power supply. It covers channel
per Docket 21006 are automatic via the units internal pre-programmed micro processor.
The AMM-806 accepts standard audio/video sources such as satellite receivers, television camera, video tape recorders or
demodulators. The advanced design ensures access for all level and over-modulation controls via the front panel. The audio
pre-emphasis can be disabled internally for use with a BTSC Stereo Encoder.
Setting up the AMM-806 Output Channel
Channel setting is accomplished by setting the channel switch
to the desired output channel.
The switch is divided into 2 sections, the Tens section (denoted
In each section, there are 4 switches labeled - 8,4,2,1. This
corresponds to the switch value.
Setting the switch to the right invokes the corresponding value
of the switch.
The user sets the Tens section and the Ones section to reflect
to zero.)
AMM-806 (CH 2-125)
Video
for Color Operation
Audio
(Exceeds 100 kHz with Pre-emphasis Defeated)
Examples of switch settings
for various channels
X = 8
Y = 4
8
4
2
1
8
4
2
1
X = 11
Y = 6
8
4
2
1
8
4
2
1
AMM - 806
XY = ch.116 XY = ch. 84
Power Requirements
Mechanical
1.15 x 3.5 x 7.5 in., 29 x 89 x 191 mm
Connectors (Rear Panel)
16 HE-12/HE-4
Instruction Manual
MSBC - Sub-Band Block Converter
Description
The MSBC is a modular sub band block up-converter designed for use in Blonder Tongue’s HE Series rack chassis’. The unit
provides sub-band capability to MIDM-806C demodulators by block converting sub-band channels T7 to T13 to receivable
860 or AMM Series for a complete modular headend processing solution.
(Channels T7-T13)
(Channels 7-13)
Electrical
1.2 Watts
Mechanical
Connectors (Rear)
Power Green LED
Specifications (Typical)
SUB-BAND
INPUT
NOT
USED
RF
OUTPUT
POWER
VIDEO
IN
AUDIO
IN
RF
OUT
POWER
VIDEO
OUT
RF IN
POWER
Return
Channel(s)
From
Sub-Band
Diplexer
Ch.T7-T13
MSBC MIDM
MICM
AMCM
AMM
Forward
Output
Channel to
Combiner
é
Sub-Band
Converter Demodulator Modulator
AUDIO OUT
MSBC
POWER
INDICATOR
BLONDER
TONGUE
65
Front Panel
T7 7 MHz 168.25 MHz 7 175.25 MHz
T8 13 MHz 168.25 MHz 8 181.25 MHz
T9 19 MHz 168.25 MHz 9 187.25 MHz
T10 25 MHz 168.25 MHz 10 193.25 MHz
T11 31 MHz 168.25 MHz 11 199.25 MHz
T12 36 MHz 168.25 MHz 12 205.25 MHz
T13 43 MHz 168.25 MHz 13 211.25 MHz
Channel Channel
INPUT OUTPUT
17HE-12/HE-4
Instruction Manual
MIDM-806C Demodulators
Description
The MIDM-806C is a professional quality single channel, agile audio/video demodulator. It provides an A/V output
System. The MIDM-806C demodulator and an MICM/AMCM modulator can be paired to perform off-air channel
processing or to cherry pick cable channels.
☛
range. It is ideal for off-air signal processing (audio/video processing and remodulation) and CATV cherry picking
applications.
The MIDM-806C series features rock solid, phase lock loop (PLL) synthesized frequency control. Agile frequency
selection is accomplished via front panel channel up/down buttons with a LED channel readout for easy on-the-fly
channel changes. A channel lockout mode is also provided to prevent accidental channel changes. Non-volatile
memory maintains the programmed channel selection in case of power loss. All MIDM series units are compatible
with any modulators requiring a baseband input, and can be used in any combination with the MIPS-12C power
supply in a MIRC-12V chassis.
Specifications MIDM-806C (Typical)
Video
Audio
Mechanical
Connectors/Impedance
Controls
Indicators
18 HE-12/HE-4
Instruction Manual
1
4
3
2
All operating controls are located on, or are accessible from the front panel.
MIDM-806C
Stock no. 7740C
VA
PWRC/ANT
+100
BLONDER
TONGUE
1
5
6
9
3
4
7
8
2
CH CH
LOCK
. .
1. Video - Adjusts video output level
2. Audio - Adjusts audio output level
3. Channel LED - Displays ANT or CATV channel number
4. C/ANT Mode Button - Push button to enter the mode selection menu. Use the
Display Channel System
STD CATV
HRC
IRC
Broadcast U/V
5. Power - On / Off push button
6. Channel Down - Increments channel by -1
7. Channel Up
8. +100 LED - When depressed, red LED lights to indicate
channels 100 and higher
9. Lock - Depressing Lock button locks present channel or mode in memory prevent-
ing inadvertent change. A user must depress the lock button again for any chan-
nel mode/changes
All the connectors are located on the rear panel.
1. Video Output - Standard negative sync video at a 0.5 to 1.5 Vp-p level.
2. Audio Output - Adjustable 0.5 to 1.5 Vp-p
3. Power
4. ANT/CATV
. .
3. LED Display - Lights when in standby
LOCK Indicator
Channel Display
DC Input
GND
Rear Panel
19HE-12/HE-4
Instruction Manual
CH
ENTER
BLONDER
TONGUE
3
2
DHDC -DV
UP DN
CHANNEL
1
1. 2-Digit LED Display — 2 digit LED Channel display
2. Up/Down Channel Buttons — Up & down push button controls for setting the channel.
3. Enter Button - Button used to enter the displayed channel into memory.
5. Up/Down Channel Buttons — Up & down push button controls for channel and mode adjustment.
DHDP - Digital High Definition Processor Series
Description: The DHDP Series consists of 2 parts, the DHDC-D (Downconverter) and the DHDC-U (Upconverter). The units
are intended to operate as a system in order to process digital & high definition television (HDTV) signals.
Operating Controls and Indicators
Rear Panel Views
DHDC-DV
ENTER
BLONDER
TONGUE
+100
DHDC -UV
8
RF LEVEL
DN
UP
UP DN
4
5
6
7
CH
ENTER
BLONDER
TONGUE
+100
DHDC-UH
DIGITAL HDTV
UP CONVERTER
RF LEVEL
DN
UP DN
7
CHANNEL
UP
6
5
8
4
DHDC-UV
IF
RF
POWER
9
12
11
DHDC-DV/DH
IF
RF
POWER
10
13
11
DHDC-UV/UH
Rear Panel
11. Power Connector
Specifications
DHDC-D Down Converter
Input Tuning Range (Off-Air 8VSB) (54-216, 470-864 MHz)
DHDC-U Up Converter
Standard CATV, IRC, HRC & Broadcast 54-864 MHz
* Average Measurement
DHDC-UH
DHDC-DH
ENTER
BLONDER
TONGUE
DHDC-DH
DIGITAL HDTV
DOWN CONVERTER DN
3
CHANNEL
UP
1
2
20 HE-12/HE-4
Instruction Manual
Setting Up the Units
1. Place each of the units into the appropriate Blonder Tongue Micromodular chassis by sliding the unit into the
retaining rails.
a. It is recommended to physically place one Downconverter and one Upconverter next to one
another in the chassis.
5. Connect each unit to the power supply using one of the power supply cables.
Programming the Unit
mode skip to the Operating Mode Selection section.
Programming the DHDC-D
1. Navigate to the desired channel number by depressing the CH pUP and qDN buttons.
a. Press and hold the CH pUP or qDN arrow button for fast scrolling.
2. Press the ENTER button when you reach the desired channel setting. This will tune the downconverter input to the
corresponding frequency for this entry.
a. The LED display will blink continuously during the channel programming process and will not change the channel
until the ENTER button is depressed.
b. The unit has a special feature that alerts an operator of an inadvertent or desired change to the unit by flashing
LED readout. The LED will continue to flash for 30 seconds if the ENTER button is not depressed and if no
additional entries are made then the readout will return to the display of the previously programmed channel
entry setting.
Programming the DHDC-U
Programming a Channel
1. Navigate to the desired channel number by depressing the CH pUP and qDN buttons.
b. Press and hold the CH pUP or qDN arrow button for fast scrolling.
2. Press the ENTER button when you reach the desired channel setting. This will tune the upconverter output to the
corresponding frequency for this entry.
a. The LED display will blink continuously during the channel programming process and will not change the output
channel until the ENTER button is depressed.
b. The unit has a special feature that alerts an operator of an inadvertent or desired change to the unit by flashing
LED readout. The LED will continue to flash for 30 seconds if the ENTER button is not depressed and if no
additional entries are made then the readout will return to the display of the previously programmed channel
entry setting.
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