12-17-2018
Information subject to change
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3110 HELP FILES – SECTION 11
11 3110 Calibration
This section provides the guidelines for establish-
ing the performance of key parameters for the
3110 output. It provides instructions for the mea-
surement of the various output signals the 3110
can provide. Although the output of the 3110 can
be adjusted via the gain settings, this feature is
intended for use in calibrating the system (both the
3110 and the associated amplifier) and not for cali
-
brating the output of the isolated 3110. For instruc-
tions on the calibration of a 3110/amplifier system,
please see the Help topic “System Calibration.”
For the calibration of an isolated 3110, tolerances
and ranges will be provided for a variety of mea-
surements. The results of the measurements will
be essentially a “Pass” or “Fail.” Tests conducted
according to these instructions should be consid-
ered “functional tests” that are intended to confirm
the function of the settings of the 3110. Since
fine adjustment of the test system can be accom
-
plished via the 3110/amplifier System Calibration,
the calibration of the isolated 3110 will require only
general instrumentation. The procedure should be
carried out with the gain set at the anticipated gain
to be used in testing. The default gain used in the
assessment tables is 20.
11.4.1 Documentation
Standard SI units commonly found in electrical
standard are used for checking the calibration of
the 3110. The minimum requirements for calibra-
tion documentation are that the instruments used
should be able to accurately measure the quanti-
ties in Table 1 within the tolerances provided. In-
struments should bear evidence (via a label on the
instrument or similar documentation) that the mea
-
suring instrument is calibrated. The table shown
below is provided to record the performance of the
3110 in key areas, and to facilitate interaction with
the AE Techron when needed.
ANSI Z540 or ISO 17205 calibration with docu-
mentation is available as an option.
11.4.2 Required Instruments
Instruments required are an oscilloscope and a
digital multimeter. All measurements should be
made into high-impedance instruments. The mea-
surements outlined here do not require a probe.
Using BNC connectors to both instruments is
advised. It is assumed that the oscilloscope probe
attenuation is set at 1X.
Best performance will be attained if the measuring
instruments are either isolated (battery powered)
or grounded at the same point with the 3110.
Instruments requirements are suggested require-
ments. Virtually any calibrated high impedance
DMM and oscilloscope will serve. Observe any
temperature corrections or other temperature
based requirements for the measuring instru-
ments.
Oscilloscope:
Bandwidth:
50 MHz, minimum
Sample Rate:
1 GS/sec minimum
Automatic Measurements:
Frequency, RMS,
Peak-to-Peak
Input Impedance (DC):
10M ohm
DMM:
Frequency Range:
±(% of r # of counts)
50 Hz to 10 kHz:
0.3 + 20
10 to 20 kHz:
1 + 40
20 to 100 kHz:
2 + 150
Impedance:
Up to 20 M ohm over available
ranges
11.4.3 Connections
Test connections are made from the front panel
Signal Out BNC connector to the test instrument.
Cables and connectors having minimal inser-
tion loss over the bandwidth (DC to 300 kHz) are
required.
An amplifier may be connected to the 3110, but
must be turned off during this series of tests.