Leica WILD M695 User Manual download pdf (Page 104)

Testset

Service Manual M695

09/93 3077-HWE Doc code 636 718

Functions of test box

All control voltages . . .

All supply- and control voltages between the control unit and the microscope

with XY-gear can be measured.

. . . to the microscope . . .

Control voltages to the microscope are measured relative to XY_GND, such

to the XY-gear relative to GND_XY.

. . . measure at low light

level

Unless otherwise indicated, set the lamp to minimum brightness. The voltages

indicated in Section 4 are only valid for this condition.

Voltage levels are falsfied by the voltage drop between the control unit and

the microscope. Because of the current taken by the lamp, this voltage drop

to PGND (measuring ground) can be as much as 0.9V. The control voltages

of focus and zoom are measured against PGND and are therefore influenced.

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Leica WILD M695 User Manual Page 104