Erstellt in Deutschland • Änderungen vorbehalten • Eine PDF-Version finden Sie im Internet 
Created in Germany • Subject to change without notice • A pdf version can be found on the internet
GMC-I Messtechnik GmbH 
Südwestpark 15 
90449 Nürnberg •
 Germany
Telefon+49 911 8602-111 
Telefax +49 911 8602-777 
E-Mail
info@gossenmetrawatt.com
www.gossenmetrawatt.com
1 Application
Using this converter you can connect 
test instruments equipped with a serial 
interface 
(e. g. 
PROFITEST 204, PROFITEST PSI, 
METRISO 5000 D-PI, METRISO PRIME+, 
SECUTEST..., METRAHIT..., R6000
) to 
the USB-interface of any personal 
computer. The converter allows data 
transfer* between test instrument and 
PC as well as an update of the test 
instrument’s internal software. For further information see the test instrument’s operating instructions and the 
help file coming with the transfer software.
* The adapter can be used for remote con-
trol with restrictions only.
2 Connection
The converter is simply plugged to an 
unused USB port of your PC. No 
external power supply is required as 
the converter is supplied via the USB 
interface. 
Just connect the serial plug to the 
RS232 socket of your tester. For reasons of mechanical safety you can 
fasten the screws.
3 Driver installation
GMC-I Driver Control software for 
installation of the driver can be downloaded from Gossen Metrawatt's 
website at:
http://www.gossenmetrawatt.com 
→ Products  
→ Accessories; Software;  
→ Software for Testers  
→ Utilities  
→ Driver Control
4 Technical Data
Operating voltage 5 V DC +/-10% from USB 
Port of PC
Current consumption
50 mA max, 25 mA typ.
USB-Interface 4-pin Type A, USB 1.1 
compatible with USB 2.0 
USB Pinning 1:VCC, 2:D-, 3:D+, 4:GND 
RS232-Interface 9-pol. connector Sub-D 
shielded. Interface param-
eter programmable by PC, 
max. 230 kBd 
RS232 
Pinning 1, 6, 7, 8, 9: NC; 
2: RxD; 
3: TxD; 
4: aux. Voltage 10 V; 
5: GND 
EMC EN 61326:2013 
EN 61000-2 /EN61000-4 
Weight 90 g 
Cable length USB: 1.1 m, RS232: 0.4 m 
Protection class IP40