11.6.1 I/O Interface
11.6.2
Transfer plug / load / mains voltage adaptor
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
11.7 Memory and storage autonomy
•
Memory
: micro SD card type, it takes place in the slot on the back of the unit. It allows
25 sessions
of
86500
values each.
•
Capacity
: microSD Card –
1GB
or
2GB
Table below shows the measurement time (1 session) according logging time (sampling rate) for LXeq (LXY) storage.
Technical features
33
Access to micro SD card
Not used
Mini USB connector for data transfer –
load battery – mains voltage adaptor
Warning light of the state of
battery charge
I/O 1 : Input
: allows
measurement launching
I/O 1 : Output
: levels detection
I/O 2 : Input
: not used
I/O 2 Output
- 0-10V
I/O 1 In -
input : start-stop control for measurement :
TTL level maximal 5V – input impedance > 15 kΩ– jack : 2,5 mm diameter
GND : Ground
Measurement
start
Measurement
stop
measurement
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 0-130dB
step : 0,0769 mV/dB
accuracy : ± 0,3dB
GND : Ground
Not connected
