Fluke 9100 - Page 56

3-28 Section 3: Model 9100 Controls: Modes of Operation
Final Width = 215mm
'Lead Capacitance
Compensation'
The 9100 is designed for use with the
Comprehensive Lead Set Model 9105,
which is shipped as standard with the
instrument. However, users are at
liberty to use their own leads, so long
as they are of high enough quality.
For Capacitance function (refer to
Section 4, sub-section 4.13), a lead
compensation bridge ensures that the
correct virtual capacitance is delivered
at the UUT terminals. It is possible that
users may need to accommodate leads
other than those provided with Model
9105, and these may require further
compensation. For this purpose, the
9100 also provides Lead Capacitance
Compensation to be altered separately,
for leads connected either at the 9105
workmat, or directly into the front panel
terminals. These two adjustments are
accessed via the 'MORE' Configuration
screen, as shown below.
The 'Fluke Lead Cap' value of
28.5pF, shown on the screen, is the
default value referring to compensation
using the Model 9105, whereas the
'User Lead Cap' value is applied for
connection directly to the front panel
terminals.
TODAYS DATE TIME
Configuration
Ser. No. XXXXXX Rev. XXX
Present Settings:
Certificate Style Style 1
Engineers Notes Disabled
Fluke Lead Cap 28.50 pF
User Lead Cap 0.00 pF
EXIT
NEW
PASSWRD
CERT
DETAILS
ENG
NOTES
WFLUKE
LEAD
CAP
USER
LEAD
CAP
1. For access to alter the factory
Lead Capacitance Compensation,
press the FLUKE LEAD
CAP screen key on the 'MORE'
'Present Settings' screen
2. This transfers to the 'Fluke
leadset' screen, which allows users
to adjust the compensation for a
known lead capacitance value
(refer to para 3.3.2.29).
3. The EXIT screen key reverts to
the 'Present Settings' screen.
3.3.2.27
Factory Lead Capacitance Compensation Adjustment
1. Use Digit edit or Direct edit to
adjust the compensation, by
adding the extra value of lead
capacitance to the default value.
2. The EXIT screen key reverts to
the 'MORE' - 'Present Settings'
screen.
3.3.2.28
Factory Lead Compensation Adjustment Screen
TODAYS DATE TIME
Configuration
EXIT
Fluke leadset capacitance
compensation can be adjusted
using digit or direct editing.
DEFAULT
CAP
COMP
The maximum value is
pF
Lead Cap (pF) =
28.5