Peripheral imaging Corporation

Page 9 of 10 PI310MC-DR Description, 7/30/99

Offset adjust, R18, is a screw driver adjustment potentiometer that is accessed through

adjustment hole as viewed in figure 5.

Gain adjust, R16, is a screw driver adjustment potentiometer that is accessed through the

hole as it is viewed in figure 5.

There are only two adjustments:

These adjustments will be pre-set to the customer’s specific application at the factory,

therefore, in general will not require trimming by the user. Test point TV is probed with

a scope to monitor the analog image pixel levels. The probe should be grounded as close

to the CIS module as possible. If possibly right on the ground input lead, pin 5, of the I/O

connector.

Analog Zero signal adjust (OFFSET ADJ) as it is shown in Figure 5. This pot is adjusted to

place the dark level of the analog image pixel signal to approximately –0.9 to –0.7 Volts.

Normally adjusted with intended targets.

Analog Gain adjust, “GAIN”, is adjusted greater than 2.0 and less then 3.5 Volts with the

CIS imaged on a standard white target similar to the standard white copy or typing paper.