VDL S7‑300 U
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anUaL
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The highlight will initially be positioned over the ProgMem field. To select a different test, position the
highlight in the desired field. Press the
Enter
key to perform the test. Each test is described in the sections
that follow.
p
rog
M
eM
A checksum of the entire program memory will be calculated and displayed after a few seconds. The
following example shows the results of a typical ProgMem test.
Program Memory
Checksum=19bb (GOOD)
Hit any key...
Program Memory Test
The labels GOOD or BAD will indicate the success of the test.
The reported checksum value will vary depending upon the version of the installed firmware.
f
LaSh
M
eM
The results of a typical FlashMem test are listed in the following.
Flash Memory:
4096K
Hit any key...
Flash Memory Test
The test verifies that the microprocessor can properly access the Event Record memory. The reference
to 4096K (or optionally 8192K or 16384K) indicates the size in bytes of the memory device. A value of 0K
indicates that a failure has been detected.
gpS r
CVr
The GPS Rcvr test will check for the presence and operability of the optional GPS Receiver. A typical test
result is displayed in the following.
GPS Rcvr Test: Okay
17:14:42.087 Valid
34.1043,-117.8784
Hit any key...
GPS Receiver Test
At the end of the first line either Okay or NONE will be reported. Okay indicates that the GPS Receiver is
installed and the microprocessor is communicating with the receiver. NONE indicates that the receiver is
either not installed or has experienced a severe failure.
At the end of the second line either Valid or Invalid will be reported. Valid indicates that the GPS
Receiver has achieved a signal lock with at least one satellite and that an accurate UTC‑0 time is being
reported. Invalid indicates that a satellite lock has not been achieved.
The third line will list the latitude and longitude coordinates if they are available. In order to report
latitude and longitude the GPS Receiver must achieve a signal lock with a minimum of four satellites.
Depending upon the location of the GPS antenna this may not be possible. In such cases coordinates of
0.0000,0.0000 will be listed.
Irrespective of the reported latitude and longitude coordinates, if the test reports Valid the GPS Receiver
option is reporting accurate date and time data.
Summary of Contents for CWR-24E
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Page 14: ...VDL S7 300 User Manual 6 Micro Aide 1 User Notes ...
Page 22: ...VDL S7 300 User Manual 14 Micro Aide 2 User Notes ...
Page 96: ...VDL S7 300 User Manual 88 Micro Aide A User Notes ...
Page 98: ...VDL S7 300 User Manual 90 Micro Aide B User Notes ...
Page 106: ...VDL S7 300 User Manual 98 Micro Aide C User Notes ...