DranTech PMIT User’s Guide
19
12.6 Transmission Mode Operation with RS 232 Interface
The DranTech PMIT is equipped with a bi-directional infrared
interface for the transmission of measurement data to a PC. Data
are transferred optically through the instrument housing by means
of infrared light to an interface adapter (accessory USB-HIT),
which is attached to the instrument. The adapter’s RS 232
interface allows for the establishment of a connection to the PC
via an interface cable. Beyond this, commands and parameters
can be transmitted from the PC to the instrument as well. The
following functions can be executed:
•
Configuration and read-out of measuring parameters
•
Measuring function and measuring range selection
•
Start measurements
•
Read out measured values
Activating the Interface
The interface is switched on manually as described below for
transmission mode operation. The instrument continuously
transmits measurement data to the PC via the interface adapter in
this operating mode. The interface is activated automatically by
the PC for receiving operation (i.e. the instrument receives data
from the PC).
Starting Transmission with Menu Functions
InFO
SEnd
StArt
The
symbol blinks at the display in order to indicate interface
operation.
Automatic Activation and Deactivation of the Transmission
Mode
If the sampling rate is 20 s or longer, the display is switched off
automatically between samples in order to prolong rechargeable
battery or battery service life.
Exception: continuous operation
As soon as an event occurs, the display is automatically switched
back on.
Configuring Interface Parameters
Addr – Address
If several instruments are connected to the PC via interface
adapters, an unique address must be assigned to each device.
Address 1 should be used for the first device, address 2 for the
second etc. If only one multimeter is utilized, an address between
1 and 14 should be used.
Address 15 is not used for addressing, i.e. the device with address
15 always responds, regardless of the actual address.
