Keithley 617 User Manual

Table 7-14. Preamplifier Checks
Step Item/Component
Required Condition Remarks
1 COM fuse Remove and check for continuity
Replace if open
2
Power on, 200mV DC range
Zero check off
3 Apply 190mV DC Input 19OmV
Measure at PREAMP OUT and
COM unless otherwise noted.
4 Apply 1.9V DC Input
1.9v
5 Apply 19V DC Input
19v
6 Apply 19OV DC input
19ov
Remove before sleeting amps
7
Select AMPS, 2mA range
8 Apply 1.9mA Input 19OmV
9
Select 20mA range
10 Apply 19mA Input
1.9v
11
Select 2OOpA range
12 Apply 190fiA Input
19v
13
Enable zero check, volts
14
ov
Zero Correct, if necessary.
15
Select OHMS
16 R304, pin 1
1ov. +0.1v
Referenced to PREAMP OUT
17 R304, pin 2
IV, +-O.OlV
Referenced to PREAMP OUT
18 R304, pin 3
O.lV, +o.o01v
Referenced to PREAMP OUT
Table 7-15. Ranging Amplifier Checks
> Item/Component
t------
Apply 19OV DC to input.
Apply 19V DC to input.
Apply 1.9V DC to input.
ANALOG OUTPUT and COM,
Check X0.01 Gain
Required Condition 1 Remarks
Power on. ZOOV DC ranoe. / Measure between 2V
ZERO CHECK off. I
1.9v
Select 20V DC range.
1.9v
Check X0.1 Gain
Select 2V DC range.
1.9v Check Xl Gain
Select 200mV DC range.
/Apply 190mV DC to input. 1 1.9V
Check Xl0 Gain
7-19

Keithley 617 Specifications

General

Brand	Keithley
Model	617
Category	Measuring Instruments
Language	English