Fluke 89V
Meter (General)
Description
This Communication Protocol has an infrared (IR) serial interface that is operated in an RS-232 mode:
9600 Baud, no parity, 8 bits, 1 stop bit
The IR adapter cable thqat is used with the 89-IV and 87-IV gets its power from the DTR and RTS signals going into its DB9 connector.
The PC RS-232 communications port needs to control these two signal lines via software, or of course, they can be controlled by wiring in an external power source.
If you wire in an external power source, be sure to break the DTR and RTS signal lines going back to the PC. The DB9 connector on the IR adapter cable needs to have the following lines with the following voltages applied:
DTR disabled - pin 4 with -3 to -12 volts (or tied to pin 5, Ground, will work also)
RTS enabled - pin 7 with +3 to +12 volts
Key Points
The Fluke 189 and 187 both have an infrared (IR) serial interface different from the model 89-IV and 87-IV.
Even though the IR hardware is somewhat different, the serial communications still operates with the same RS-232 mode:
9600 Baud, no parity, 8 bits, 1 stop bit
The IR adapter cable for the Fluke 189 and 187 does not need any special control of its signal lines.
It can be used just like a traditional serial cable.
Specifications
The Fluke 189 and 187 both have an infrared (IR) serial interface different from the model 89-IV and 87-IV.
Even though the IR hardware is somewhat different, the serial communications still operates with the same RS-232 mode:
9600 Baud, no parity, 8 bits, 1 stop bit
The IR adapter cable for the Fluke 189 and 187 does not need any special control of its signal lines.
It can be used just like a traditional serial cable.
