Test Conditions; Calibration Procedure - National Instruments FD-11603 Manual

Equipment
Calibrator
SHM125M-Pigtail I/O
Cable (0.3 m, 1 m, 3 m
lengths) (x4)
Banana Plug (optional)
(x2)

Test Conditions

The following setup and environmental conditions are required to ensure the FD-11603 meets
published specifications:
• Keep connections to the device as short as possible. Long cables and wires act as
antennas, picking up extra noise that can affect measurements.
• Verify that all connections to the device are secure.
• Use shielded copper wire for all cable connections to the device. Use twisted-pairs wire
to eliminate noise and thermal offsets.
• Maintain an ambient temperature of 23 ±5 °C. The device temperature will be greater
than the ambient temperature.
• Keep relative humidity below 80%.
• Allow a warm-up time of at least 10 minutes to ensure that the FieldDAQ device
measurement circuitry is at a stable operating temperature.

Calibration Procedure

The calibration process includes the following steps:
1. Initial Setup on page 4
2. Verification on page 4
3. Adjustment on page 7
4. EEPROM Update
5. Reverification
Table 2. Recommended Test Equipment
Recommended Model
Fluke 5502A
NI part number
785950-0R3/01/03
on page 8
on page 8
High-precision voltage source with
gain uncertainty of ≤50 ppm and
offset uncertainty of ≤50 μV
— Use banana plugs with an opening
large enough to accommodate four
22 AWG signal wires
FD-11603 Calibration Procedure | © National Instruments | 3
Minimum Requirements
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