Polymap Wireless Polytel, User Manual

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Polytel
®
Data Transmission System
8-1500-R - 11 -
correctly connected.
In normal operation, the leftmost, or POWER light, will remain on, and the second light
(RADIO), will blink roughly once per second. During the data transfer, the RADIO light
will blink in other patterns. The PHONE light is used to indicate usage of the telephone,
and the ERROR light is used to indicate a data transfer error.
Note that data transfer errors are expected to occur when phone lines or the network are
congested, and should not be a concern unless they persist for more than one hour. Should
the error light persist for more than an hour, please contact the agency that provided you
with this equipment.
If the ERROR light comes on the first time the device is used, the most likely
explanation is that it is not correctly connected to a telephone jack.
4.6 Indicator light on PWR-08-03
The device contains a small LED. This indicator will light shortly after you take a
measurement on the host. It will turn itself off completely after the data is successfully
transmitted. Should the data fail to transmit immediately, the device will schedule multiple
retries, and the light will come on again several times for short intervals.
LED Meaning
Solid (maximum 20 seconds) Retrieving data from host
Fast blink (1 per second) Looking for a receiver
Very fast blink (2 per second) Transmitting data
Slow blink (1 every 10 seconds) Waiting for a retry (previous attempt did not find
receiver)
4.7 Retry Schedule
Immediately after a new measurement is taken, the unit will attempt to contact the receiver
or access point. Should this fail, it will retry after waiting for one minute. Failing that, it
will wait two minutes before retrying. Should all of these transmission attempts fail, the
measurement will be stored and the device will turn itself off automatically. Stored
measurements are time stamped and transmitted along with the next measurement.
If you know you have measurements stored and not yet transmitted, you can wake up the
device and transmit the stored measurements without taking a new measurement. Please
consult the documentation of each device for specifics instructions on how to do this.
4.8 Operation in France, Spain or Japan
The device uses a frequency hopping protocol in the 2.4GHz band. Some of the channels
used are not allowed in France, though they are allowed elsewhere. Please notify Polymap
Wireless of your intent to use the device in this country so that it can be reconfigured
appropriately.