DOCUMENT SUBJECT TO U.S. EXPORT CONTROLS, COMPLIANCE APPROVIAL REQUIRED PRIOR TO DISTRIBUTION
IM4830, Page 11
7. BATTERY REPLACEMENT
In the event the battery requires replacement, it can be replaced with an Endevco model EBT26. It can be
installed by Endevco or the user can replace the battery. The battery is located in the upper right corner in
figure 3.
Below are step-by-step instructions to follow for replacing the battery:
1. Remove the four screws on the bottom of the instrument. These screws may be located under the
rubber feet.
2. Gently remove the top cover and the battery will be visible (see figure 3). The battery will lift out
since it is held in-place when compressed by the upper and lower case.
3. It is recommended that the wires be cut close to the battery leaving the other end of the wires
attached to the circuit board and plug. Strip the ends of the wire
4. Strip the ends of the leads on the new battery.
5. Solder the new battery leads to the leads that were left in the simulator. Cover the solder joint with
shrink tubing
6. Reassemble the case and check for proper operation.
8 CALIBRATION AND TESTING
Annual calibration is recommended to ensure accuracy and proper performance. Calibration service is
available from the factory, or the user can perform the calibration by following the following procedures.
8.1 Test Equipment
Unless otherwise stated, the following equipment is required. Items may be substituted with equipment of
similar performance.
• DC Power Supply, 9 Volts regulated. The power supply provided with the 4830A is preferred
• Oscilloscope
• Frequency counter
• RMS Voltmeter
• Isotron Signal Conditioner model 4416B
• Single/differential charge amplifier model 6634C
8.2 Testing
8.2.1 With the unit switched on, verify that the Battery Low message is not displayed. Use the 9 V
regulated power supply to recharge the batteries, if required. The procedure may be performed
with the power supply connected.
8.2.2 Turn the unit off and connect the 9 Volt power supply (note that the center pin is +). The unit should
automatically turn on with the power supply connected and charging the internal batteries. Verify
that the yellow LED charge indicator is lit when the power supply is connected.
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