User's Manual

User Guide
WherePort III User Guide D948 Rev B
©2010 Zebra Enterprise Solutions. WherePort and all product names and numbers are Zebra Enterprise Solutions trademarks. All oth
e
Figure 21 Magnetic Field Meter
3.8 The Field Meter
The field meter is a WhereTag connected to a voltage meter so that it can detect and
display the strength of the WherePort field (Figure 21). By walking around an installed
WherePort the strength of the signal throughout the area to be monitored can be
measured. The tag can be positioned to match its mounting position on the tracked asset.
Experimenting with the field meter can help to clarify the coverage area of the
WherePort.
After the installation of WherePorts at a facility, the field meter is used to test that
the field coverage is as it was planned to be. If gaps or problems with the coverage are
found they can be corrected before the facility is put into operation. See the Magnetic
Field Meter User’s Guide (P/N D0755).
3.9 The WherePort LED
On the top of the WherePort is an LED that indicates the status of the WherePort (see
Table 5).
Table 5 LED Status Indicator
Condition WherePorts LED Status
Power up reset All Red
Power = 0 All Red
Phased Master Green
Phased Slave Yellow
Sequenced Master, field on Green