15.10.3 I/O interface
15.10.4 Transfer plug / load / mains voltage adapter
This plug is for data transfer, battery load (optional) or power. It's a mini USB format.
•
Data transfer:
USB mode
•
Data Format:
proprietary
•
Mains supply – charger:
type universal USB format – ref:
AS-123
PRI: 100V-240V-60/50Hz – 150 mA
SEC: 5V - 1000mA - 5VA
15.11 Memory and storage autonomy
•
Memory:
micro SD card. Storage capacity can be divided into
999 sessions
.
•
Minimum capacity
: micro SD Card –
2GB
The opposite table shows the measurement duration (1 session) according to the logging time DI for the storage in
1/1 oct
mode.
Logging time DI
Maximum duration measurement (in hour)
Maximum duration measurement (in day)
1 s
3240
135
½ s
1620
67
¼ s
810
33
1/8 s
405
16
1/16 s
200
8
For logging times greater than 1s, the maximum measurement duration is related to the obtained result with 1 second:
EX: DI = 15 s Maximum measurement duration = 135 days x 15/1
Technical features
65
GND : masse
I/O 1
Out
- output :to activate alarm - maintains high state after detecting a LX or
planned LXeq level . Variable time selected from 1s to 10s by 1s steps.
TTL level 3.3 V – input impedance < 100 Ω - jack : 2.5 mm diameter
I/O 2 Out
: DC output : 0-10 Volts – input impedance < 100 Ω - jack : 2.5 mm diameter
Dynamic range : 0-137dB
Step : 0,073 mV/dB
Accuracy : ± 0.5 dB
GND : masse
non connecté
I/O 1 In -
input : start-stop control for measurement :
TTL level maximal 5V – input impedance > 15 kΩ– jack : 2,5 mm diameter
Measurement
start
Measurement
stop
measurement
Ground
Ground
Not connected
In the event of a reset of the memory by the sound level meter or through the LDB23 software, all the memory
is erased.
