Olson Technology OTD-3000-BG - Manual (Page 5)

025-000388 REV B Page 5
COMPUTING SWITCH SETTINGS FOR NON-STANDARD FREQUENCIES
Positions 1 through 8 of the left switch and positions 1 and 2 of the right switch each have numerical values as shown
in figure 2 below. Each switch position is either UP = OFF = (value) or is DOWN = ON = 0. The TOTAL SWITCH
VALUE is the sum of these individual values and set the frequency in 1MHz steps.
LEFT SWITCH RIGHT SWITCH
Switch position 1 2 3 4 5 6 7 8 1 2
Value up 1 2 4 8 16 32 64 128 256 512
Value down 0 0 0 0 0 0 0 0 0 0
i.e.: 115 = 1 + 2 + 16 + 32 + 64
Figure 2 - DIP SWITCH VALUES
A) Decide on the required frequency yyy.xx.
B) Temporarily drop the .xx part and compute the total switch value required by adding 39.0 to the
remaining number.
C) Set the DIP switches to equal the total required value.
D) Change the SW 2 setting if frequency ends with .00, .05, or .75. Factory setting is .25MHz.
E) Select the proper input tuner band and set the appropriate switch to activate this band.
EXAMPLE:
A) Example frequency of 76.25MHz is desired.
B) 76.25 - .25 = 76.0 + 39.0 = 115, the total switch value required.
C) The switch settings for a total of 115 would be: 1100 1110 00. Set the 1st 10 positions to this value
1 = Up, 0 = Down.
D) .25 is the default for SW 2 so it does not require changing.