Information regarding the DIP switch configuration can be found on pages 2-5 through 2-7 of the VITS100 user manual. You can download this manual from the following link: VITS100 user manual VITS signal selection for the individual vertical interval lines is made with four DIP switches (S1-S4) mounted on the VITS inserter circuit board. Remove the small panel from the top cover of the VITS inserter, as shown in Figure 2-4, to gain access to these switches. Switches S1 and S2 make the selections for fields 1 and 3, and switches S3 and S4 make the selections for fields 2 and 4. Each DIP switch selects the test signals for two of the vertical interval lines, as shown in Figure 2-5. Table 2-2: DIP Switch Settings VITS inserter Action DIP Segment Settings* 1 (5) 2 (6) 3 (7) 4 (8) Insert Test Signal: 0% Black (two settings) = 0 1 1 0 or 1 0 0 1 7.5% Black = 1 1 1 0 50% Gray = 1 1 0 1 FCC Color Bars = 0 0 0 0 FCC Composite = 1 0 0 0 Multiburst = 0 1 0 1 Multipulse = 0 1 0 0 NTC 7 Composite = 1 0 1 0 NTC 7 Combination = 0 0 0 1 Red Field = 1 1 0 0 SIN X/X = 0 0 1 0 VIRS = 1 0 1 1 Pass Program Video = 1 1 1 1 Auto VIRS = 0 0 1 1 Insert Source ID = 0 1 1 1 * 1 signifies an OPEN switch; 0 signifies a closed switch