Olson Technology OTM-3550-SW User Manual
Page 3
025-000233 REV E
Page 3
OTM-3550-SW
FREQUENCY AGILE - F.C.C. COMPATIBLE
TELEVISION MODULATOR
1) INTRODUCTION
The Olson Technology OTM-3550-SW is a frequency agile F.C.C. compatible television modulator that will
provide high level output, on any channel from 7.00MHz, Ch. T7 through 547.25MHz, Ch. 78, including all
HRC and IRC output channels. All channels are selectable in 0.25MHz increments by front panel DIP switches.
F.C.C. offsets of +12KHz and +25KHz are also selectable by front panel DIP switches.
The OTM-3550-SW uses SAW filtering for 60dB adjacent channel rejection. This unit also offers the unique
Olson Technology feature of >80dB out-of-band carrier to noise ratio which allows virtually unlimited numbers
of the OTM-3550-SW to be combined without the need for external band pass filters. The OTM-3550-SW
is BTSC stereo compatible.
2) CHANNEL SELECTION
Remove the front panel plate marked “Output Channel Select” to expose the channel select and offset select
DIP switches as shown in Figure #1.
Figure #1
FRONT PANEL DIP SWITCHES
0 = Switch in DOWN Position
1 = Switch in UP Position
1)
Select the desired channel by use of the channel select switch and the code sheets.
2)
Select the proper offset by use of the offset switch and the offset information on the next page.
3)
The example above indicates channel 6 with 0KHz offset.