Newport 1815-C, Operator'S Manual

Page: 27 / 34

14
Section 4
Test, Maintenance and Troubleshooting
In cleaning the body of this instrument, use only a mild soap and water
solution on a damp cloth.
Caution
Do not use acetone or other organic solvents on the Model 1815-C.
Organic solvents attack the ABS plastic case.
This section contains information to verify that the Model 1815-C electrical
performance is within the specified accuracy. Model 1815-C specifications
may be found at the front of this manual.
Ideally, performance verification should be performed when the instrument is
first received to ensure that no damage or change in calibration has occurred
during shipment. The verification procedure should also be performed
whenever instrument accuracy is suspect. If the performance under these
circumstances is outside specified limits, contact Newport Corporation about
re-calibration.
Note
If the instrument does not meet specifications and it is still under
warranty (less than 12 months since date of shipment), contact your
local Newport Corporation representative or the factory to deter-
mine the action to be taken.
4.2.1 Environmental Conditions
The instrument should be operated with ambient temperature surrounding the
Model 1815-C between 18
°
C and 28
°
C with a relative humidity of less than 70%.
4.2.2 Recommended Test Equipment
Equipment for verifying the performance of the Model 1815-C is listed in Table
7. Alternative equipment may be used so long as the equipment accuracy is at
least as good as the specifications listed in Table 7.
Table 7 — Recommended Calibration Equipment
Description Specification Manufacturer Model
Current Source 1.00 nA to 10 mA Keithley 220
Required Accuracy
<
100 nA
±
0.4%
>
100 nA
±
0.1%
DC Voltage Source 1
µ
V Resolution
(Resistive voltage
divider may be required)
Digital Multimeter 1
µ
V Resolution Keithley 192
Required Accuracy
±
0.4%
Maintenance
Procedures
4.1
Performance
Verification
4.2