Product specifications
WuT 82005
RS232 > Centronics interface, 5kV-isolated
Often, it is necessary to connect a standard parallel printer to an RS232 interface without a difference in potential.
The signal ground of the parallel interface of most common printer models is equipped with a direct line to the ground wire. A not insulated connection of such a printer to a measuring device can thus greatly affect the measured results, due to a ground loop. Measuring equipment that works without potential and that is not equipped with a fully isolated serial interface also provide incorrect measured results if in contact with the printer and thus the ground.
This interface works without external power supply and allows for a number of mobile applications that were previously not feasible. The currentless operation however has also a few disadvantages, as the functions are limited to the essential ones. If you require high baud rates, large security FIFO or autosensing of the RS232 parameters, we recommend the standard device #82008.
Technical background on security FIFO: The flow control (or handshake) in serial interfaces is not always carried out exactly by character, as, under certain circumstances, characters might still be transmitted after the set stop signal. This effect is normally limited to maximum 3 characters, although with older UNIX systems up to 1kByte of extra data has been measured. Missing security FIFO can result in the loss of characters or even garbled printouts.
Product properties:
Insulated connection of parallel printer to RS232
Interface in the cable
No need for external power adapter
Electronic system discretely secured in the adapter housing of the printer cable
Security FIFO of 7 bytes
Ready to plug
to 9-pin PC-COM port
Pluggable to 25-pin PC COM ports via supplied mini gender changer #11570
Pluggable to 25-pin terminal AUX ports via supplied mini gender changer #11580
Connections and displays:
- Serial port: RS232 Interface, 9-pin SUB-D female plug-ready for PC, incl. 2m connection cable on device
- Parallel port: 36-pin Centronics plug, interface, Can be plugged directly to the printer
- Baud rate: 150 .. 19,200 baud
- Data format: 7, 8 data bits, No, Even, Odd Parity
- Handshake: DTR, XON/XOFF handshake
- Buffer: 7-byte overflow buffer
- Power supply: No need for external power adapter
- Current consumption: approx. 5mA
Housing and other data:
- Housing: Plastic housing: 75 x 61 x 20mm (L x W x H)
- Enclosure rating: IP20
- Weight: approx. 200g
- Scope of delivery: RS232 > Centronics interface, 5kV isolated, mini gender changer, #11570, mini gender changer, #11580
- Wiesemann & Theis product -
