Grant Instruments
30641 V1.3
Yoyolog
Page 34
Operating Manual
9
Understanding the LEDs
The logger LED’s for Type YL-T10 and YL-RH20 are coloured differently compared to
those of the rest of the yoyo logger series.
Datalogger YL-T10 , YL-RH20
Logger Status
Red LED
Yellow LED Green LED
Logs at interval
-
-
Flashes at
interval
USB communication
-
on
-
Alarm occurred
Flashes at
8seconds
-
-
Alarm status cleared after an
alarm occurred
-
Flashes at
8seconds
-
At least 2 alarms occurred with a
pause in between.
Flashes at
8seconds
Flashes at
8seconds
-
Battery empty
Flashes at
15seconds
Flashes at
15seconds
Flashes at
15seconds
System check OK after battery
change
LED chaser
LED chaser
LED chaser
All other datalogger of Yoyo series
Logger Status
Red LED
Blue LED
Green LED
Logs at interval
-
Flashes accord-
ing to log interval
-
Monitors alarm condi-
tions
-
-
Flashes
every 8 secs
Alarm active
Long Flash for 1
second every 8
seconds
-
-
Alarm occured but is
not active anymore
Short Flash every
8 seconds
-
-
Battery empty
Intense flickering
for 0.5 seconds
every 15 seconds
-
-
System check OK
after battery change
LED chaser