EXPLORER 122
User Manual
98-150578-A
4-1
4
Troubleshooting, Maintenance, and
Technical Support
The EXPLORER 122 is designed to be very reliable and rugged. The terminal performs
automated self-tests and also provides for alarms, manual self-tests, and system resetting to
further evaluate the cause for, and possibly correct, any unexpected functionality. A further
list of problems that might arise, their possible causes, and potential remedies is provided in
section 5.2.
4.1
Self-Tests
The EXPLORER 122 has various self-tests to detect fault conditions. These tests are run on
start-up and periodically during the terminal operation. These tests can also be run manually
through the HW Diagnostics section 3.5.4. A list of these self-tests is provided in Table 5-1.
Table 4-1. Self-Tests
Self Tests
Description
Ethernet Controller
Verifies the operation of the Ethernet
controller chip
Information
Assurance
Verifies the operation of the data
encryption and decryption
McBSP1 Serial
Interface
Verifies the operation of the forward link
decoder
McBSP4 Serial
Interface
Verifies the ADC operation
FPGA
Verifies that the FPGA has been
programmed correctly and the device
driver has been loaded
Temperature Sensor
Reads the current temperature of the
board
NAND Flash
Reads a known test pattern from flash
sector
DDR SDRAM
Performs walking ones, walking zeros, and
address line RAM tests
MIMO
Verifies the RF transceiver’s device id
