Olson Technology OTR-3550 - Manual (Page 2)

025-000156 REV F Page 2
OTR-3550
FREQUENCY AGILE - F.C.C. COMPATIBLE
TELEVISION PROCESSOR
1) INTRODUCTION
The Olson Technology OTR-3550 is a frequency agile - F.C.C. compatible television processor. This unit will
select any VHF/UHF/cable/HRC and IRC input channel from 55.25MHz to 801.25MHz, and will provide
high level (+60dBmV) outputs on any channel from 55.25MHz (channel 2) through 547.25MHz (channel
YY). All input channels are selectable in 0.25MHz steps and output channels are selectable in 1MHz steps by
front panel DIP switches, including F.C.C. offsets of +12KHz and +25KHz.
The OTR-3550 uses dual SAW filtering for 60dB adjacent channel rejection and has high level spurious free
output. This unit also offers the unique Olson Technology feature of >80dB out-of-band carrier to noise ratio,
which will allow virtually unlimited numbers of the OTR-3550 to be combined without the need for external
bandpass filters. The OTR-3550 is BTSC compatible and will automatically function with stereo or monaural
audio carriers.
The OTR-3550 has a low power consumption (17 watts @ 115 VAC) for reliable long term operation. This
unit is equipped with a 0.5 amp slo-blo fuse. To maintain proper performance of unit, replace only with
equivalent fuse.
2) INPUT CHANNEL SELECTION - DEMODULATOR
Remove the front panel plate marked “Input Channel Select” to expose the channel select and band select
DIP switches as shown in Figure 1.
FIGURE 1 - INPUT CHANNEL SELECT
A) CHANNEL SELECTION - Channel selection is accomplished by properly setting the 12-position
DIP switches to the corresponding channel code. Channel codes can be selected from figure #2 or
the code card attached to the Input Channel Select cover plate then, set the DIP switches from left
to right. For example - If channel 11 is selected, its corresponding channel code is: