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Table 4.1 Setting the Switches
Setting
Switch
No.
Function
ON OFF (default)
1 Location mode
change
Location fixing mode Location estimation mode
2 Reliability/TRAIM
mode change
Normal/TRAIM OFF High-reliability/TRAIM ON
3 Optical level test Continuous light emission Normal light emission
4 Clock range
change
2020 – 2039 (Year) 2001 – 2019 (Year)
Note: Settings can be changed when the power is ON, but changes are not valid until the
power has been switched OFF and ON again, except in the case of switch 3 for optical
level testing, which is valid immediately.
- In the case of location mode, the location estimation mode (OFF) should be used.
- In the case of reliability/TRAIM, the High-reliability/Train ON mode (SW-OFF)
should be used.
- In high-reliability mode, the unit outputs the 1PPS signal only when no failed
satellites are detected. In the case of two or more failed satellites, correct
operation of the unit cannot be assured.
- In the case of clock range change, the switch should be OFF before 2019 and ON
after 2020.
For the details, see the Appendix D.
4.2 How to Turn on the Power
Turn on the power switch. Power ON is confirmed by the illumination of the "5V" LED on the
front panel of the unit.
4.3 Checking the 1PPS Signal
After the power is turned on, check that 1PPS signals are output. If 1PPS signals are not output, it
is impossible to use the time signals that are output from the GPS receiver unit. Output of 1PPS
signals is confirmed by the blinking of the "1PPS OUT" LED on the front panel of the unit.