Campbell Scientific VSP3 Vosponder Voice Radio Interface User Manual
Page 41
Section 5. Testing and Troubleshooting
5-5
Problem:
The radio doesn’t hang up after a voice message transmission.
Solution:
Check the radio interface cable. Make sure that the connection to
the radio and the Vosponder are solid. If the problem still exists,
then try replacing the cable with another one if you have a spare
or can swap one out from another Vosponder that is working.
You may need to repair or replace the cable.
Problem:
The Vosponder transmits voice messages great when I set it up
in the office, but when I deploy it to my remote site it doesn’t
transmit when I key in the DTMF code from a handset, unless
I am close to the site.
Solution:
The problem likely has something to do with loss of radio signal
due to the physical or environmental conditions. RF signals
require a clear line of site from the remote to the handset or
through a repeater and then to the handset. If trees, buildings,
mountains, etc. are blocking the path, then the signal may be
reduced or completely lost. Environmental conditions such as
fog and snow can also reduce the range of the RF signal.
A visual check for line of sight may reveal problems that may be
corrected by relocating a remote station or adding a repeater. If
the network appears to have good line of site, then a radio path
study may be in order. This would reveal any weak links in your
radio network. Things like loose cable connections, damaged
cables, radios, or antennas could be the source of the problem.
Contact a radio specialist who has the right equipment to perform
a radio path study if you don’t have the equipment yourself.
Problem:
When the voice message is transmitted, it speaks a bunch of
random letters and will not stop transmitting.
Solution:
This is typically caused by an error that has occurred while
uploading the voice image file to the Vosponder.
1. First check your terminal communication settings in
HyperTerminal or whatever terminal program you are using.
See Section 4.1.
2. Reset the Vosponder by entering an “R” from the M:>
prompt. Then upload the voice image file again. Make sure
to check the voice image file by viewing after you have
uploaded it to the Vosponder. (Refer to Section 4.2.4.)
Important Note: After resetting the Vosponder you will also
need to reset any settings that you had previously changed from
the default settings, like the SDI-12 address or DTMF code.
Problem:
The Vosponder prompt does not appear when HyperTerminal is
opened and a key is pressed on the keyboard.
Solution:
This is typically caused by the setting in the terminal program
not being quite right. Check the following: