ETS-Lindgren HI-4433-STE Electric Field Probe - Manual (Page 19)

Practical Application and Use | 19
Practical Application and Use
Before connecting any components, follow the
safety information in the ETS-Lindgren
Product Information Bulletin included with your
shipment.
System Theory
HI-4433 series Broadband RF Probes utilize a microprocessor for intelligent
operation and control. Their self-contained power supply employs a 3.6 VDC
NiCd battery, which provides up to 20 hours of continuous operation.
For each axis, the probe measures the radio frequency signal level and
generates a linearized reading of this measurement. A vector addition is
performed on these three readings: the resultant is transmitted to the readout
over glass fiber optic cables.
Receiver commands to the probe consist of the following:
• Send reading
• Read battery
voltage
• Zero
• Set sleep timer
• Switch range
• Read temperature
• Enable axis
Automatic Zero
This feature eliminates the need for internal zero adjustment and eliminates the
temperature drift problems associated with other instrumentation. The automatic
continuous zero also allows the operator to use the meter immediately upon
power-up. Also, it is not necessary to place the meter in a zero field environment
to check its zeroing.