2: Link Test - Honeywell XYR 5000 series User Manual

Honeywell Process Solutions
3.2.1 Continued
NOTE
While using a slower baud rate increases
communication distance, it also increases the
minimum transmit time. See Section 5.2 for a list
of the fastest transmit rates for each baud rate.
This may not be suitable for your application.
3.2.2 Link Test
NOTE
The Link Test may only be conducted from
Transmitters, Base Radios and WMT versions 1.7
and higher. However, a Link Test being run from
WMT version 1.7 may test communications with
Transmitters older than version 1.7.
The version number may only be checked when
the Transmitter is powered up. See Figure 4.1.
8
July 2012
Wireless Dual Analog Input Interface Transmitter
To place the Transmitter in RSSI Diagnostic mode follow the menu map
shown in Figure 3.2. Note that the RSSI menu is under the DIAGNSE
menu and not the CONFIG menu.
Figure 3.2: Menu Map to RSSI Mode
Now that the Transmitter is in the RSSI mode, bring the Transmitter close
to the equipment you wish to monitor. Look at the LCD; notice the '>'
will constantly fluctuate. One should estimate an average value based on
these fluctuations. The ideal signal integrity is seven arrows.
Once you have verified that you are receiving a signal, you should check
to make sure the Transmitter is communicating properly with the Base
Radio. To do so, exit the RSSI by pressing ENTER, and then navigate to
EXIT? of the diagnostic menu and return to the Operations Sequence
shown in Figure 4.1 in Section 4.1.
If you see a NO RF message, then you do not have satisfactory RF
communication with the Base Radio. If your application allows, move the
Transmitter to a different position and check again for communications. If
your application only allows you to mount at this particular point, you may
want to try a slower baud rate setting for an increased range.
One final solution is to reposition the Base Radio. However, this may
affect communications with previously installed Transmitters, and if so,
may require the use of a second Base Radio for your application. To select
a better spot for the Base Radio, see Section 3.1.1 of the Base Radio User
Manual.
The Link Test measures the wireless link performance of a Transmitter
running in its normal operating mode.
Transmitter to the Base Radio at a predefined interval called the Transmit
Rate (see Section 6.1). Each message contains data for the previous time
period (since the last transmit). The Link Test looks at the wireless
performance going in both directions, from the Transmitter to the Base
Radio and vice versa, and comes up with a rating. The result that appears
on the display shows the determined link strength.
In order to perform this test, the Transmitter must be communicating on
the same channel and baud rate as the Base Radio. See Section 5 to
configure communications.
The Link Test may be conducted from the Transmitter, Base Radio, or
through WMT. Running the Link Test from WMT is ideal for testing
communications for an installation with remote or hard-to-get-to
Transmitters. To conduct the Link Test from a Base Radio, see Section
3.2.2.2. To conduct the Link Test from WMT, see Section 3.2.2.3.
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