Table 29 Symptoms and Remedies
Symptom
Number
a
Symptom Remedy
3 When testing the
MPRX, all the wires are
connected correctly but
the unit does not respond.
The MPRX may not have the software loaded inside the unit. Contact
Technical Support.
If you are using a terminal emulation program, check that the
terminal emulation setting on the MPRX is VT100.
Check that the MPRX communication cable is connected to the
correct COM port.
Verify that the external antenna is connected correctly.
Also, check the position of the Interface Selection Switch.
4 Strange signal responses
come from the MPRX
when tested with the PC.
Ensure that the reader is in the correct interface mode for the
test tag, that is, AAR for an AAR-formatted tag.
Check the system defaults using a terminal emulation program. Both
PC and reader should be set to 9600 baud, 8 bits, 1 stop bit, and no
parity.
5 Nothing happens when
the test tag is passed
in front of the MPRX RF
antenna.
Ensure that the MPRX is powered on
Verify that the reader is set to RF ON (#6401). Verify that the antenna
is connected correctly.
6 The MPRX came from
another site and does not
work the way the factory
defaults indicate that it
should.
Dierent commands may have been used to support the other site’s
specific configuration. You can restore the factory defaults by using a
terminal emulation program to switch to command mode and issuing
command #66F Load Default Operating Parameters. All factory
defaults except RF frequency will be restored.
7 When connected to a PC
that is running terminal
communications software,
a just-powered up MPRX
displays one of the
following messages:
#Model E4 Series
X.XX SNSSSSSS
#[Copyright notice]
The MPRX works. The software is now loaded. SSSSSS is the
TransCore-assigned serial number for this MPRX. However, if
SSSSSS = 000000, a serial number has never been assigned.
If a serial number has not been assigned to your MPRX, contact
TransCore Technical Support.
MPRX User Guide
TransCore Proprietary
7–102
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