Gossen MetraWatt METRAHIT PM TECH Operating Instructions Manual page 57

Data Interface
Type Optical via infrared light through the
housing
Data transmission
(data transfer) Serial, bidirectional (not IrDa compatible)
Protocol Device specific
Baud Rate 38,400 baud
Functions – Select/query measuring functions and
parameters
– Query/transmit momentary measurement
data
– Read out stored measurement data
The USB X-TRA plug-in interface adapter (see accessories) is
used for adaptation to the PC's USB port.
Internal Measured Value Storage (
E only)
XTRA
Memory capacity 16 Mbit (2 MByte) for approx. 60 ,000
measured values with time stamp
Gossen Metrawatt GmbH
PM TUNE /
METRAHIT PM XTRA /
Power Supply
Battery 2 ea. 1.5 V mignon cell (2 ea. size AA),
alkaline manganese per IEC LR6
(2 ea. 1.2 V NiMH rechargeable battery
also possible)
Service life With alkaline manganese (2600 mAh):
approx. 200 hours
Battery test Battery capacity display with battery
symbol in 4 segments:
Querying of momentary battery voltage via
menu function.
Power OFF function The multimeter is switched off
automatically:
– If battery voltage drops to below approx.
2.0 V
– If none of the keys or the rotary switch
are activated for an adjustable duration
(10 to 59 min.), and the multimeter is not
in the continuous operating mode
Power pack
connector socket
(METRAHIT PM XTRA /
PM TUNE /
only) If the NA X-TRA power pack (see
E
XTRA
accessories) has been plugged into the
instrument, the batteries are disconnected
automatically.
Rechargeable batteries can only be
recharged externally.
Technical Data
.
56