Olson Technology OTD-3000 User Manual

OTD-3000

FREQUENCY AGILE

TELEVISION DEMODULATOR

INSTRUCTION MANUAL

Phone:

E-Mail: [e-mail]

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OTD-3000

AGILE DEMODULA TOR

The OTD-3000 is a full feature agile demodulator that is available in four standards - NTSC, P AL B/G, P AL I and P AL
D. The OTD-3000 will demodulate NTSC frequencies from 55.25MHz (ch. 2) to 801.25MHz (UHF ch. 69), and
P AL carrier frequencies from 48.25MHz to 855.25MHz, including all cable channels. Frequency selection is by front
panel DIP switches. The unit features external subcarrier output, two video outputs, rear panel selectable composite
video outputs, and a 600 ohm balanced audio output. A multiplex audio output is also provided for stereo applications,
along with an i.f. output port which allows the unit to be utilized as a frequency agile input tuner for processor applica­tions.

APPLICATIONS

* On line applications where a monitor feature is required.

* Microwave applications requiring composite video outputs.

* Standby input tuner for processor applications.

* Sub-carrier output for broadcast stereo applications.

* Use in conjunction with OTM-3000 or OTM-3000-CV for processor applications.

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OTD-3000

SPECIFICATIONS

RF Input................................................................................

RF Input Level.....................................................................

V ideo Outputs (two)...........................................................

Composite Video.................................................................

Audio Output......................................................................

MPX Audio Output (NTSC)..............................................

4.5MHz Output (NTSC).....................................................

5.5MHz Output (P AL B/G).................................................

6.0MHz Output (P AL I)......................................................

I.F . Output............................................................................

NTSC

55.25MHz to 801.25MHz in 0.25MHz increments.
All P AL Versions

48.25MHz to 855.25MHz in 1MHz increments.
Can select HRC channels with internal jumper plugs.

-10dBmV to +25dBmV off-air .

-10dBmV to +10dBmV off-cable.

1V p-p (75Ù).

Rear panel selectable by slide switch.
500mV p-p (600Ω balanced) min.
+40dBmV (75Ω unbalanced).
+40dBmV (75Ω).
+40dBmV (75Ω).

+40dBmV (75W).
75Ω, +20dBmV nominal @ 15dBmV input.

Front Panel Controls..........................................................

Rear Panel Connectors......................................................

Power Requirements...........................................................

Size........................................................................................

On/off switch, channel/band select DIP switches.

T ype F RF input, (2) video outputs, external subcarrier output, MPX audio
and I.F . audio outputs. Audio output screw terminals. 3-wire power cord ­U.S.A. plug.

NTSC 115 VAC @ 60Hz

10 watts maximum.

PAL B/G , P AL D 220 V AC @ 50Hz

10 watts maximum.

PAL I 240 V AC @ 50Hz

10 watts maximum.

1.75"H x 19"W x 8" D.
Standard rack mounting.

OPTIONAL

OTD-3000-S.........................................................................Same features and specifications as OTD-3000 but with sub-band

channel T -7 (7MHz) through channel YY (445.25MHz) input
capabilities.

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1) DEMODULA TOR OPERA TION

A) Input Channel selection - Remove the front panel plate on the “Input Channel Select” to expose the

channel select and band select DIP switches.

The channel select switch is the first 12 positions on the left side of the opening. The next 3 positions
are for band select and the last position is for AFC “On-Of f” selection. The channel select codes for
all standard input channels is attached to the DIP switch cover for operator’s convenience and also
appears on page 5 of this manual. To select an HRC input channel, utilize the HRC code page
attached to the manual. T o select a channel, follow the code sheet from left to right placing the DIP
switch in either the up or down position as indicated by the code sheet. (0 = DOWN, 1 = UP)

The band select switch for the channel selected is as follows:

B) AFC selection - Most off air TV stations are usually very close to the specified carrier frequency

C) Off cable processing should not require AFC but make sure the proper code sheet (standard

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This information is also included on the code cards attached to the cover plate.

such that the AFC function need not be used. However , some UHF stations have a tendency to
drift so it is best to utilize the AFC function. Simply put the AFC switch (last switch on the right) in
the down position for automatic frequency control.

channel or HRC) is utilized.

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