General Information
Chapter 224
Recommended Test Equipment 
Table 2-1 lists the test equipment recommended to check, adjust, and troubleshoot 
the Power Sensor. If substitute equipment is used, it must meet or exceed the critical 
specifications to be used in place of the recommended instruments for servicing the 
Power Sensor. 
NOTE Check the Power Sensor’s warranty. Opening it voids the warranty.
Table 2-1 Recommended Test Equipment (done)
Instrument Type Critical Specifications  Suggested Model
Use
a
Power meter No Substitute E4418B (Modified - 
See Appendix A)
A
Digital Voltmeter • Range: 100 mVdc to 100 Vdc 
• Input Impedance: 100 mohm;
• Resolution: 4-digit
• Accuracy: ±0.05% ±1 digit 
34401A T
Oscilloscope • Bandwidth: dc to 50 MHz 
• Sensitivity: Vertical, 50 mV/div 
• Horizontal, 500 μs/div
54622A A,T
BNC(m) to BNC(m)
(2 required)
10503C A
Ohmmeter • Range: 1 - 100,000 ohm; 
• Accuracy: ±5% 
34401A T
a. A = Adjustment, T = Troubleshooting