IET Labs 1409 Series, Руководство по эксплуатации

Страница: 16 / 17

8
1409 Series
8 Maintenance
4.2.3 Calibration Procedure
To calibrate the 1409, proceed as follows
1. Determine and employ proper metrological
practices.
Allow a confi dence band for the uncertainty
of the measuring instrument and setup.
2. Set test conditions:
See Calibration conditions in Specifi cations
Chapter 2 above.
If a Digibridge is used, set to 1 Vrms, series
model.
Calibrated value is the capacitance added
when the standard is plugged into binding
posts.
3. Determine the allowable drift limits for the
capacitance reading.
<0.1% per year
4. Confi rm that the readings fall within these
drift limits, allowing for the uncertainty
band.
If the reading falls outside the limits,the unit
may need to be monitored or returned to
IET,
There are no adjustments in the 1409.
4.3 Replaceable Parts List
Reference IET Pt No Description
1 32-21 Binding Post, Red
2 32-20 Binding Post, Black
3
32-19 Binding Post, Gold
3
BP-1000-RED Binding Post, Red
3
BP-1000-BLK Binding Post, Black
3 BP-1000-GRN Binding Post, Green
Not Shown UG-194 bnc connecor
Not Shown
SCA-*-Cap SCA capacitor assembly
Replace * with nominal capacitance value
4
5
6
Figure 4-1
10 µF - 1000 µF
R eplaceable parts