T2 MD-4 User manual

QUAD CHANNEL
RACK MOUNT MODULATOR
OWNER’S MANUAL
SELECT
35
MD-4
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System Set-up::
SP-8
SP-2
ANTENNA/CATV
TVs
CCTV CAMERAS
MD-4
2
Int oduction::
Thank you for purchasing this T2 modulator. T2 is the
brainchild of some of the most experienced professionals
in the custom installation and home entertainment indus
tries. Please read through this owner’s manual so that you
will know how to operate your MD 4 properly. Always keep
this manual in a safe place for future reference.
The MD 4 is a digitally tuned, dual sideband, quad channel
modulator. It is designed to convert four independent
baseband video and audio signals to user selected UHF or
CATV channels. Any TV connected to the RF output can
receive the signal, provided that the TV is tuned to the
proper channel.
1
The diagram below shows how the MD 4 might fit into a
typical RF system. See fig 1.
Fig. 1
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Mounting::
Your MD 4 was designed to be housed in a standard 19”
rack. Mounting screws have been included with your
MD 4, which should be used to affix the front panel to
the corresponding holes in the 19” rack. See fig. 2.
3
Fig. 2
Featu es::
Your MD 4 is a dual sideband modulator. When selecting a
channel for modulation, ensure that that channel, along
with the following channel, is empty.
Your MD 4 has an adjustable output gain, allowing you to
quickly and easily balance the modulated channel with the
rest of the system. See fig. 3a.
Your MD 4 comes with adjustable video input modulation,
which will ensure compatibility with all video source
equipment and provide optimal video quality. Video
modulation knobs have corresponding LEDs, which are
set to illuminate when the modulation level reaches
87.5%. To effectively set the input modulation level, rotate
the knob slowly clockwise until the LED illuminates. Then
rotate it a very small amount counter clockwise until the
LED extinguishes for optimal result. See fig. 3b.
Your MD 4 comes equipped with a video present relay.
This can be connected directly to an a/v control system.
The contact is normally closed and opens upon detection
of a video signal. See fig. 4a.
4
Fig. 3
ba
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Your MD 4 is equipped with video present LEDs that will
illuminate upon detection of a source signal. See fig. 5a.
Video can be fed to your MD 4 through standard composite
cables or through S Video cables. Loop through outputs
allow the source signal to be sent to other system compo
nents. When using the loop through outputs, be sure to
change the resistance switch to “1KΩ.”
Your MD 4 has an adjustable offset mode. Use the button
labeled “OFFSET MODE” to switch between TV, STD, HRC
and IRC. See fig. 5b.
5
a
Fig. 5
Fig. 4
ab
P og amming::
To program a channel into your MD 4:
• Ensure that the channel that you wish to
modulate onto is empty.
• Use the “Select” button to switch between MODA,
MODB, MODC, and MODD. These are the four
modulation inputs.
• Select the proper offset mode.
• Select the desired channel using the buttons
marked “UP” and “DOWN”. See fig. 6a.
All channel information will be shown in the display
window. See fig. 6b.
6
Fig. 6
a
b
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Input::
S Video: 0.4V to 2.7V Peak to Peak
Adjustable @ 75Ω
Audio: 1Vrms Adjustable @ 47KΩ
Video Pe fo mance::
Differential Gain: Less than 5% (0.5dB)
Differential Phase: Less than 5°
RF Output::
Offset Modes: TV STD HRC IRC
Channel Range: 14 78 65 135 65 135 65 135
Output Level Range: 25 to 35dBmV Adjustable
IM Distortion: 60dBC
Note::
All channel ranges exclude channels 95 99.
7
T oubleshooting::
No Pictu e::
Ensure that the video source is on and generating a signal.
Ensure that the TV and the modulator are tuned to the
same channel.
He ingbone Inte fe ence on Modulated Channel::
Ensure that the channel that you are modulating to is
completely vacant. Distant UHF stations may sometimes
appear open but will cause interference if you try creating
a new channel at the same frequency.
8
Specifications::
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Wa anty::
T2 Signal Management (T2) warrants this product to be free from defects in
materials and workmanship for a period of three (3) years from the date of
purchase or T2 will repair, or at its option, replace the defective product
(with a new or factory reconditioned product, as T2 may determine). To
obtain warranty service under this warranty, call T2 for a return material
authorization (RMA) number and return the defective product together with
a copy of the sales receipt or other satisfactory proof of purchase to T2 Signal
Management, 63 Mall Drive, Commack, NY 11725, Attention: Customer
Service. Please put the RMA number on the outside of the carton. Ship all
cartons freight prepaid.
This warranty does not cover damage resulting from (1) use or installation
other than in strict accordance with manufacturer’s written instructions, (2)
disassembly or repair by someone other than the manufacturer, (3) misuse,
misapplication or abuse, (4) alteration, (5) lack of reasonable care, (6) wind,
ice, snow, rain, lightning, or any other extreme weather conditions, acts of
nature, fire or any other cause not within the reasonable control of T2.
ANY IMPLIED WARRANTY ARISING FROM THE SALE OF THE PRODUCT,
INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
FOR PURPOSE, ARE LIMITED TO THE WARRANTY STATED ABOVE. THERE
ARE NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION OF
WARRANTY SET FORTH ABOVE. THIS PRODUCT IS SOLD AS IS.
T2 shall in no event, and under no circumstances, be liable or responsible for
any consequential, indirect, incidental, punitive, direct or special damages
based upon breach or warranty, breach of contract, negligence, strict tort
liability or otherwise or any other legal theory, arising directly or indirectly
from the sale, use, installation or failure of any product acquired from T2.
Buyer’s remedy is strictly limited to return of the goods and repayment of the
price or repair or replacement of the non conforming goods or parts,
whichever T2 chooses.
10
FCC Confo mity::
DECLARATION OF CONFORMITY
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES.
OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS:
(1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE,
AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE
RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDE
SIRED OPERATION.
Installation Requirements:
FCC Classifies this product under part 15 of its rules as a “televi
sion interface device.” Systems designed using television interface
devices have the following legal requirements:
1. The modulated channel signal strength may not exceed
15.56dBmV at any television. Federal Regulation
47CFR15.115(b)(1)(i).
2. If an antenna is used in the system, the modulated channel sig
nal strength may not exceed 51dBmV at the antenna
input port. Federal Regulation 47CFR15.115(c)(4).
For the Installer:
The system you design must comply with these regulations.
As the installer, you are responsible. Amplifiers must be used
in all antenna based systems to provide necessary isolation and
comply with FCC part 15.
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For mor information, visit www.t2signal.com.
For t chnical support, call 1.800.827.5540. 85P004A
TERK and T2 are registered trademarks. The T2 logo is a trademark of TERK Technologies Corp.
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