6
In the EI mode receiver blinks 5 times per cycle. The first blink is a delimiter. It is easily
distinguishable double-blink. Other 4 blinks stay for position computation, SN ratio,
oscillator frequency offset and continuous tracking tests respectively. Each blink could
be yellow, red or green. Yellow means that information for test isn't available. Green
means test is passed. Red means test is failed. The delimiter double-blink also could
be one of these colors. Its color is calculated from colors of other blinks. It is yellow if at
least one of blinks is yellow. It is red if no other blinks are yellow and there is at least
one red blink. It is green in all other cases.
The simple interpretation of testing requires only delimiter double-blink color to be
watched for. If it is green — all is OK, if it is yellow — need to wait more, if it is red —
some tests failed.
With good receiver, antenna and observation conditions, all blinks should be green in
10 minutes after power on.
Thresholds are:
•
51 db*Hz for SN ratio (red if less for all locked satellites),
•
3 ppm for frequency offset (red if more),
•
15 minutes for continuous tracking time.
Internal Modem Operation Status
This information mode is available only if the receiver is equipped with an internal
modem.
To switch to mode, click either FN or PWR button on MINTER two times (one, if already
in EI mode). 'Click' means push and quickly release (inside one second). To switch
back to normal blinking click either button once again.
1. When modem is turned off, the STAT LED blinks short red 2 times per second.
2. When modem is turned on, but no data is transmitted/received, LED blinks long red
2 times per second.
3. When modem sends data, LED blinks long yellow two times per second.
4. When modem receives data, LED blinks long green two times per second.
Содержание MINTER
Страница 1: ...MINTER User s Manual Revision May 31 1999 ...
