Manual
11
5.8
Mains adaptor
In addition to battery power supply, the device can also be powered by a 9 V dc mains adaptor. To do so,
please use the 9 V input socket (12). If you use the device with the mains adaptor, it is always on. Thus,
the power key (2) will not work.
5.9
System reset
If you have an issue using the device, for example because it does not show any reaction when you press
a key, you can reset the device to its original condition. You can do this as follows:
When the device is on, use a pointed object to push the RESET key (11) in slightly. The device is now in
its original condition.
6
RS-232 interface
The device is equipped with an RS-232 interface with a 3.5 mm jack socket (10). The data output is a 16
bit data string which can be read out and processed in line with the users’ requirements. See the following
circuit diagram of the interface:
The data result in a data stream of 16 components.
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D0
D0
end word
D1 & D8
display, D1 = LSD, D8 = MSD example: when 1234 is displayed, D8 to D1 is:
00001234
D9
decimal point (DP), position from right to left 0 = no DP, 1 = 1 DP, 2 = 2 DP, 3 = 3 DP
D10
polarity 0 = positive, 1 = negative
D11 & D12
displayed unit °C = 01, °F = 02, % RH = 04
D13
Selection of display line 1 = upper line 2 = lower line
D14
4
D15
start word
RS-232 format, 9600, N8, 1
Baud rate
9600
Parity
No
Start bit
8
Stop bit
1
7
Patents
The following patents for the device have been granted or applied for:
Germany
No. 20 2008 016 337.4
Japan
3151214
Taiwan
M 358970 M 359043
China
ZL 2008 2 0189918.5 ZL 2008 2 0189917.0
USA
applied for
