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Gossen Metrawatt METRAHIT ULTRA BT Manual

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56 GMC-I Messtechnik GmbH
Interface Operation
7 Interface Operation
The multimeters are equipped with an infrared interface for the
transmission of measurement data to a PC. Measured data are
optically transferred through the instrument housing by means of
infrared light to an interface adapter (accessory), which is at-
tached to the multimeter. The adapter’s USB interface allows for
connection to the PC with an interface cable.
Model METRAHIT ULTRA BT (M248B) optionally allows for the wire-
less data transfer via Bluetooth to a PC, smartphone or tablet PC
(based on Android operating system). Information on the smart-
phone app METRALOG is available in section 10.4.2.
Commands and parameters can be transmitted from the PC to
the multimeter in both interface operating systems as well. The
following functions can be executed:
• Configure and read out measuring parameters
• Select a measuring function and a measuring range
• Start measurement
• Read out stored measured values
7.1 Activating the Interface
The interface is automatically activated for receiving operation
(multimeter receives data from the PC) as soon as the interface is
addressed by the PC, assuming that the “1rStb” parameter has
been set to “ir on ” (see section 7.2), or the instrument is already
switched on (the first command wakes up the multimeter, but
does not yet execute any further commands).
To activate the Bluetooth interface, set parameter „COM ir “ to
„COM bt “ and allocate an access key (pin) via „bt pin “, see section
7.2. The Bluetooth interface is inactive when the multimeter is
switched off.
The “continuous transmission” operating mode is selected manu-
ally as described below. In this operating mode, the instrument
continuously transmits measurement data to the PC via the inter-
face adapter, which can then be displayed with the help of a ter-
minal program.
Starting Continuous Transmission Operation with Menu Functions
1nFo
... SEnd StArt
send /
IR interface: IR and an arrow pointing to the right blink during trans-
mission mode operation.
Bluetooth interface: During radio communication to the PC or
smartphone, symbol and the two cursors are flashing.
Stopping Continuous Transmission Operation with Menu Functions
1nFo
... SEnd send /
stop send
Automatic Activation and Deactivation of Transmission Mode Operation
If the sampling rate is 10 seconds or longer, the display is
switched off automatically between samples in order to prolong
battery service life. The only exception is when the multimeter is
set to continuous operation. As soon as an event occurs, the dis-
play is automatically switched back on.
MEASURE
SETUP
FUNC
ENTER
FUNC
ENTER
MEASURE
SETUP
FUNC
ENTER
FUNC
ENTER
FUNC
ENTER
… 56 …


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