Olson Technology OTD-3000-DC - Manual (Page 2)

025-000128 REV B Page 2
OTM-3000 DC
FREQUENCY AGILE PAL D
TELEVISION MODULATOR
1) INTRODUCTION
The OTM-3000 DC is a frequency agile television modulator with an output frequency range of 48.25MHz
through 450.00MHz. All channels are selectable by front panel DIP switches in .25MHz increments.
The OTM-3000 DC offers high output level, typically +60dBmV. This unit has a very high out-of-band carrier
to noise ratio (>80dB) and uses SAW I.F. filtering, which allows virtually an unlimited number of modulators to
be combined without the need for external bandpass filters. The OTM-3000 DC has low power consumption
(typically 12 watts @ 220 VAC) for reliable long term operation.
2) CHANNEL SELECTION
Output frequency selection is made by properly setting the two 8-position DIP switches SW1 and SW2 which
are located behind the small cover plate on the front panel.
Refer to Table 1 to determine the proper switch settings for various PAL D China channels. Set the
switches from left to right as shown in Table 1.
Figure 1 - SW1, SW2 Switch Functions
For example, if 49.75MHz is desired, the DIP switches would be positioned as follows: