ETS-Lindgren HI-4422 Field Probe (Archived) - Manual (Page 65)

HI-4422 O PERATION
The HI-4422 is a battery-operated broadband radio frequency (RF) probe
designed for a variety of applications, including broadcast facilities, industrial
RF source and electromagnetic compliance (EMC) testing.
The HI-4422 measures field strength in each of three axes. It performs a vector
addition calculation on the readings and sends the result to the receiver through
a fiber optic cable. Data from each axis can be viewed individually, or can be
combined.
Limitations in system resolution may result in a non-zero reading when the
receiver is zeroed. If this occurs, it does not mean there is a problem with the
receiver, or that the readings are inaccurate. Probe linearity is specified as
+0.5 dB full scale. In addition, the variance of the A/D converter is +2 least
significant bits. When using the most sensitive range (10 V/m), these
specifications create the possibility that, under zero field conditions, the receiver
may display a non-zero value.
For a list and description of communication and information transfer protocols,
including command structure and probe commands, see Appendix E: Operating
Protocols on page 105.
Battery-Operated Field Probes: HI-4422 Field Probe | 65
Archived 6/29/10
Use only the content for
HI-4422 in this manual.
Disregard content for
all other probe models;
see ETS-Lindgren
website for other
probe content.