Olson Technology OTD-3000-DC - Manual (Page 3)

025-000128 REV B Page 3
3) SELECTION OF NON-STANDARD OUTPUT FREQUENCIES
Refer to the following paragraphs if you need to set the switches for non- standard assignments.
Each of the switches has a weighted value as indicated in Figure 2. The switches are either
UP = OFF = (value) or are DOWN = ON = 0.
Figure 2 - SW1/SW2 Switch Values
The selected video carrier frequency may be any frequency within the 48 to 450MHz band providing the selected
frequency (+) 605.75 is evenly divisible by .25. The procedure is as follows:
COMPUTING SWITCH SETTINGS FOR NON-STANDARD FREQUENCIES
A) Decide on the required frequency and check that it is evenly divisible by .25 (answer must end in .00).
B) Compute the total weighted switch value required.
C) Set the DIP switches to equal the total weighted value.
EXAMPLE:
If X is the required frequency in MHz and Y is the total weighted value of the switch settings, then (X + 605.75)
divided by .25 = Y.
To illustrate: If the desired frequency is 49.75.
Y = (49.75 + 605.75) divided by .25 = 2622
Refer to Figure 2 and compute which switch positions must be moved UP so their total value = 2622. This would
yield switch settings of:
Figure 3 - Example of settings for 49.75MHz.