Termaline® Coaxial Load Resistor
9
Inspection
With the rugged and simple construction of the Models 8201 and 8203 Load
Resistors, periodic inspection will be necessary at only about six-month
intervals. Inspection should include the items listed below:
1.
Oil Leakage - Check for coolant oil seepage around the radiator tank,
particularly at the front and back around the underside of the clamping
band.
2.
Inspect the Load for completeness and general condition of the equipment.
The Troubleshooting Chart lists the symptoms of commonly encountered
troubles, their causes, and suggested corrective measures. Use the chart as a
guide when analyzing symptoms.
Preventive Maintenance
Because of the basic simplicity of construction, no special maintenance
procedures are required. Keep the equipment clean, and occasionally check the
coolant level in the radiator tank.
DC Resistance
Check the condition of the load resistor by accurate measurement of the DC
resistance between the inner and outer conductors of the RF connector. Use an
ohmmeter with an accuracy of 1 percent or better at 50 ohms for this purpose.
The measured resistance should be a nominal 50 ohms, ±2 ohms. Perform this
test only when the load has cooled down to room temperature. Refer to
.
Figure
2
DC Resistance Measurement
