User manual

H82.0.02.6C-05 Operating Manual GMH 5150 page 16 of 22
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9 Universal Output
The output can be used either as serial interface (for USB 5100 interface converter) or as analog output
(0-1V). If the output is not needed, it is strongly recommended to deactivate it (Out oFF) to lower power
consumption. This increases battery life time.
If the device is used together with interface adapter USB 5100 the device is supplied from the interface.
Pin assignment:
4: external supply +5V, 50 mA
3: GND
2: TxD/RxD (3.3V Logic)
1: +U
DAC
, analog output

Only suitable adaptor cables are
permitted (accessories)!
9.1 Interface
The device can be connected to a USB interface of a PC by the electrically isolated interface converter
USB 5100 (accessory). The data is transmitted binary-coded and protected against transmission errors by
complex safety mechanism (CRC).
The following standard software packages are available:
 GSOFT3050: Operating and evaluation software for the integrated logger function
 EBS20M / -60M: 20-/60-channel software for measuring value display
 GMHKonfig: Configuration Software (for free on internet)
In case you want to develop your own software we offer a GMH3000-development package including:
 a universally applicable Windows functions library ('GMH3x32e.DLL') with documentation, can be used


 Programming examples 
The device has 3 channels:
- Channel 1: current measuring value (sensor 1) and base address
- Channel 2: min peak 
- Channel 3: max peak dummy value
The measuring-/ alarm- and display range values read back from the interface are always in
the selected measurement unit (mbar, bar...)!
*) CALC-Function: see chapter 7.6, 7.7