Basic Instrument Setup For All Verifications - Fluke 1746 Calibration Manual

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Supported Calibrators:
Fluke 5520A and 5522A with reference DMM 8508A. 5700A or 5730A for voltage verification/calibration only.
Calibrator settings:
Baud rate:
Data bits:
Stop bit:
Parity:
Stall:
EOL:

Basic Instrument Setup for all Verifications

The Fluke17xx_354x-ExcelTool_x.xx (ExcelTool) has built-in procedures to verify and adjust the Logger.
The Verification uses an external divider. This divider, (see Verification Box Assembly) provides more
accurate voltages than a direct connection to the 5520A. The 5520A uses a divider with a 50 Ω output
impedance when sourcing <330 mV. Due to variations in the Logger input impedance, the actual applied
voltage is less than the programmed voltage. Using an external divider where the parallel resistance is
~30 Ω allows calculation of the applied voltage with confidence that the Logger input loading will not
significantly impact the applied voltage.
The ExcelTool calculates the voltage that should be applied based on the values entered in the setup
screen.
1. Apply power to the Logger using the power supply and line cord.
2. Turn on the Logger.
3. Connect the Logger USB to the PC and start Energy Analyze.
4. Go to Instrument Setup > Measurement tab.
5. Select 3-phase Wye topology and set the scaling factors for voltage and current to 1:1. Configure both AUX
channels to use the wired ±10 V input.
Table 10. Calibration and Verification in Excel Worksheet (cont.)
Sensor selector – select items from the list for a verification of the accessory.
Use DIRECT for the Fluke Logger verification.
Calibration items – Select Voltage, AUX Input or Current input for calibration. For a Logger calibration all
three items need to be calibrated sequentially. A specific order is not required.
Calibrator Control setup – When the calibrator is connected to the PC using a RS232 cable select
Automatic to control the calibrator. Use the drop-down list box to configure the COM port. Otherwise select
Manual.
Voltage Divider setup – Configure the resistor values, R1 and R2, of the voltage divider for current
verification. Store the Excel workbook to keep the applied values for future use.
9600
8
1
None
XON/XOFF
CR/LF
Description
Power Quality Logger
Setup
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