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Maintenance
5–30
TFS3031 TekRanger/TekRanger 2 Service Manual
Battery Charge Current Check
H
Oscilloscope with current probe and amplifier that has a >1 amp range and
10% accuracy. Example is a Tektronix AM503S current probe.
1. Disconnect the TFS3031 from the power/charger adapter.
2. Discharge the battery by operating the TFS3031 exclusively on battery
power until it stops operating. The instrument automatically turns off when
the battery is fully discharged.
3. Remove the battery from the battery compartment. Do not disconnect the
battery cable or connectors.
If necessary, see page 1–15 for battery removal instructions.
4. Attach the current probe to battery wire #2.
5. Set the current probe to measure 1 amp current, 200 mA range, full
bandwidth, and DC coupled.
6. Set the oscilloscope for 10 mv/div, 50 ohms, DC coupled.
7. Plug the power/charger adapter into the TFS3031. Do not power on the
TFS3031.
8. On the oscilloscope, verify that the charging current is about 960 mA.
9. Power on the TFS3031 and allow it to initialize and stabilize.
10. Verity that the charging current is about 660 mA.
NOTE
. Charging currents of 100 ma and 330 mA may be observed assuming a
good battery and Power Supply board, and depending on battery charge
condition and ambient temperature.
11. Power off the TFS3031, remove the fiber test fixture, and reinstall the
battery in its compartment.
Equipment Required
Current Check Procedure
Summary of Contents for TekRanger 2 TFS3031
Page 5: ......
Page 27: ...Module Level Service 1 4 TFS3031 TekRanger TekRanger 2 Service Manual...
Page 39: ...Battery Recharging and Replacement 1 16 TFS3031 TekRanger TekRanger 2 Service Manual...
Page 129: ...Accessories and Options 1 106 TFS3031 TekRanger TekRanger 2 Service Manual...
Page 133: ...Theory of Operation 2 4 TFS3031 TekRanger TekRanger 2 Service Manual...
Page 265: ...Replaceable Parts 6 14 TFS3031 TekRanger TekRanger 2 Service Manual...
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