Internal Switches

2.3 Internal Switches

Remove the camera cover to set the internal switches. Viewing the camera from the front, the switches are located on boards in the center and the left. The center board is called the clock board, and the left board is called the pro- cess board. Figure 2±5 shows the switch locations.

Figure 2±5. Internal Switches

Clock board inside

(HD/VD

SW1)

(S1)

Processor board outside

(ϒ SW1)

Connectors

(SW2)

(SW4)

Bottom

2.3.1 SYNC Signal (HD/VD) Input/Output Switch SW1

Clock board outside

Lens

Switch SW1 selects between internal sync output and external sync input. Table 2±8 lists the switch positions and functions, and Figure 2±6 shows the switch.

Table 2±8. SYNC Signal (HD/VD) Input/Output Switch SW1

Switch Position

Input/Output Mode

 

 

Upper

External sync signal input

Center

Not used

Lower

Internal sync signal output

 

 

Figure 2±6. SYNC Signal (HD/VD) Input/Output Switch SW1

Upper

Center

Lower

2.3.2Option Output Switch S1

Switch S1 switches the option output as listed in Table 2±9 and shown in Figure 2±7.

Nomenclature and Use of Each Component

2-7

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Texas Instruments MC-780PIx manual Internal Switches, Sync Signal HD/VD Input/Output Switch SW1, Option Output Switch S1