User's Manual Part 1

Dip Switch Settings

The switch settings on the modulator board for an NTSC system are as follows:

Visual Carrier

IF Channel Freq SW2 SW9 SW10 SW12 SW8 SW6 SW7

45.75 CF 1100 0111 0001 0001 0111 1111 1000

45.75 +10KHz CF -10KHz 1100 0111 0001 0001 1111 0000 0000

45.75 -10KHz CF +10KHz 1100 0111 0001 0001 0111 1111 0000

38.9 CF 1100 0100 0000 0110 1000 0100 0000

38.9 + 1/2 line CF -1/2 line 1100 0100 0000 0110 1000 0100 0101

38.9 - 1/2 line CF +1/2 line 1100 0100 0000 0110 1000 0011 1011

38.9 +1/3 line CF -1/3 line 0010 1101 0000 1001 1000 1110 0101

38.9 - 1/3 line CF + 1/3 line 0010 1101 0000 1001 1000 1101 1011

38.9 +2/3 line CF -2/3 line 0010 1101 0000 1001 1000 1110 1010

38.9 -2/3 line CF +2/3 line 0010 1101 0000 1001 1000 1101 0110

Aural Carrier

Inter Carrier IF SW3 SW4 SW5 SW11

4.5 MHz 45.75 and 45.75 +/- 10 KHz 0000 0111 1000 0000

5.5 MHz 45.75 and 45.75 +/- 10 KHz 1000 1000 1100 0000

38.9 and 38.9 +/- 1/2 line 0000 1011 0011 0000

38.9 +/- 1/3 line and 38.9 +/- 2/3 line 1000 0010 0101 0000

6.0 MHz 45.75 and 45.75 +/- 10 KHz 1000 0100 0011 0000

38.9 and 38.9 +/- 1/2 line 0000 1111 0001 0000

38.9 +/- 1/3 line and 38.9 +/- 2/3 line 1000 0110 0001 0000

6.5 MHz 45.75 and 45.75 +/- 10 KHz 1000 0010 1010 0000

38.9 and 38.9 +/- 1/2 line 1000 0000 0010 0000

38.9 +/- 1/3 line and 38.9 +/- 2/3 line 1000 0001 0110 0000

1 = switch off with IC input at 5V

0 = switch on with IC input shorted to ground