BASEWEST TS-421 Calibration Manual
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Summary of Contents for BASEWEST TS-421
- Page 1 BASEWEST Calibration Manual Model TS-421 Test Set June 20, 2023 BASEWEST INC. Terrace N • Clearwater FL 33762 4240 116 Tel: 727/573-2700 • Fax: 727/573-4307 E-mail: info@basewest.com www.basewest.com 25-60-46...
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Page 2: General Arrangement
5VDC power supply. GENERAL ARRANGEMENT The general arrangement of the Model TS-421 test set is shown in the figures below. Connector Block (Figure 2) Battery Status Icon... -
Page 3: Equipment Required
Digital Ammeter, 4½ digits, 0.05% or better, capable of handling 3 amps • Power Cable, BaseWest P/N 7-6930 • Test Cable, BaseWest P/N 7-6931 (with 2Ω, 5%, 25W and 50Ω, 5%, 5W load resistors) • Banana plug to Banana plug jumper cable, Red •... - Page 4 BASEWEST Calibration Manual Model TS-421 Test Set After approximately 2 seconds, the test set should enter Calibration Mode. a) If entering Calibration Mode takes more than 4 seconds, unplug the Power Cable from the Recharge Receptacle, turn the test set OFF and ON, and then quickly plug the Power Cable back in.
- Page 5 BASEWEST Calibration Manual Model TS-421 Test Set Calibration Status Indicator Bar Figure 7. Set Low Battery Level The internal battery is now disconnected, and the test set is powered by Power Supply No.1 for the remainder of the calibration sequence. DO NOT adjust voltage until calibration is complete.
- Page 6 BASEWEST Calibration Manual Model TS-421 Test Set Select NEXT to continue (Figure 9). Figure 9. 5VDC Output Setup Use arrows on the Touchscreen to change the 5 VDC output so the digital voltmeter reads in a tight range between 5.003 and 5.007 VDC (Figure 10). Select NEXT to continue.
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Page 7: Ammeter Calibration
BASEWEST Calibration Manual Model TS-421 Test Set Use arrows on the Touchscreen to match the value shown on the Touchscreen with the reading on the digital voltmeter (Figure 11). Due to possible losses in the cable, the reading can be loosened up to be between 5.002 and 5.008 VDC. - Page 8 BASEWEST Calibration Manual Model TS-421 Test Set Move the Black Jumper Lead on the Load Module from the 2 contact (Figure 13). Select NEXT to continue (Figure 14). Black Jumper from Ammeter to Contact on Load Module *See Figure 8B for 2...
- Page 9 BASEWEST Calibration Manual Model TS-421 Test Set VOLTMETER CALIBRATION Adjust Power Supply No. 2 to 9.00VDC, 1A. Reconnect the Test Cable P/N 7-6931 leads as follows: (a) Swap out the AMMETER Test Lead plugged into the digital voltmeter with the VOLTMETER Test Lead, (b) connect the RED lead of Test Cable P/N 7-6931 to Power Supply No.
- Page 10 BASEWEST Calibration Manual Model TS-421 Test Set Adjust Power Supply No. 2 until the digital voltmeter reads 9.000 0.005 VDC. Select NEXT to continue (Figure 17). Figure 17. Voltmeter (9V) Setup Adjust the second Power Supply until the digital voltmeter reads 5.000 0.005 VDC. Select NEXT (Figure 18) to continue to the Voltage Load Check.
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Page 11: Calibration Completion
The Touchscreen will show the old and new calibration settings (Figure 20). Any readings that are RED were out of calibration but have been corrected. If any of the loads are RED instead of GREEN, it is recommended that the test set be returned to BaseWest for rework. Figure 20. Calibration Summary... - Page 12 BASEWEST Calibration Manual Model TS-421 Test Set 10.2 Record test information on the attached Calibration Sheet (Appendix A) or in-house form. 10.3 Select ACCEPT to accept changes. If EXIT is selected the test set returns to pre-calibration status and no changes are made.
- Page 13 25-60-46 TS-421 Calibration Record Appendix A Perform Calibration per latest revision of TS-421 Calibration Manual No. 25-60-46 Battery Info BaseWest Part Number 6-1036 BaseWest Lot Number Manufacture Date Suggested Replacement Date TS-421 Info Date of Last Calibration Serial Number T-00...
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