MEASUREMENT MODES
VOLTS
I
cl
OHMS
El
V/I
clcl
1 AMPS
El
q
DESCRIPTION
These buttons place the Model 617 in the desired electrometer measure-
ment mode. The VOLTS and OHMS buttons have sacondan/functions:
external feedback and VII modes respectively. In the external feedback
mode, the internal feedback elements are electrically removed from the
circuit so that an external element can be used instead. The VII mode
utilizes the V-Source to extend the resistance measurement capabilities
of the Model 617 to lOtaD. In this mode the Model 617 automatically
calculates the resistance from the programmed voltage value and
measured current, and then displays it.
OPERATION
Volts, Ohms and Amps:
1. Turn zero check on.
2 Determine the signal to be measured.
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