Vaisala FD12P - Manual (Page 86)

User's Guide _______________________________________________________________________
86 ______________________________________________________ M210296en-A
SIGNAL 0.39 OFFSET 126.83 DRIFT 0.14
REC. BACKSCATTER 1281 CHANGE -1
TR. BACKSCATTER 10.3 CHANGE 0.1
TE 2.7 VBB 19.4 VH 0.6
LEDI 5.6
P15 15.1 M15 -15.0 BGND -0.1
AMBL 0.1 DUTY 1.6
DRI21 MEASUREMENTS
TS
1.8 DRD INST 811 DRY 915.6
HARDWARE :
OK
An asterisk (*) before a value indicates an exceeded limit.
In the end, there are verbal comments on the combined errors
detected. These comments can be one or many of the following listed
in Table 22 below.
Table 22 Hardware Error Texts
Error text Description
BACKSCATTER HIGH The receiver or transmitter contamination signal
has increased more than the ALARM limit given
in the configuration.
TRANSMITTER ERROR The LEDI signal is more than 7 V or less than
-8 V.
+15 V POWER ERROR The receiver/transmitter power is less than 14
V
or more than 16 V.
OFFSET ERROR The offset frequency is zero (cable is
disconnected).
SIGNAL ERROR
The signal frequency is less than 50 % of the
offset frequency.
RECEIVER ERROR Too low signal detected in the receiver
backscatter measurement.
DATA RAM ERROR The error is in RAM read/write check.
EEPROM ERROR This is an EEPROM checksum error.
The hardware warning texts are listed in Table 23 below.
Table 23 Hardware Warning Texts
Warning text Description
BACKSCATTER
INCREASED The receiver or transmitter contamination signal
has increased more than the WARNING limit
selected in the configuration.
TRANSMITTER
INTENSITY LOW The LEDI signal is less than -3
V
.
RECEIVER
SATURATED The AMBL signal is less than -9
V
.
OFFSET DRIFTED The offset has drifted more than ±5 Hz from the
reference value.
LENS HEATER OFF No current flowing to lens heaters.
DRI21 NOT The DRI21 board cannot be detected.