User Manual

GMC-I Gossen-Metrawatt GmbH 23
Control Functions
4.5 Measurement Data Recording (METRAHIT EXTRA only)
The METRAHIT E
XTRA is capable of recording measurement data
using an adjustable sampling rate for long periods of time in the
form of measurement series. Data are stored to a battery backed
memory module, and are retained even after the multimeter is
switched off. The system acquires measured values relative to
real-time.
Stored measured values can subsequently be read out with the
help of METRAwin 10 software. The only prerequisite is a PC which
is connected by means of an interface cable to the
USB X-TRA bi-directional interface adapter, which is in turn
plugged onto the METRAHIT E
XTRA. See also chapter 7, “Interface
Operation”.
Memory Parameters Overview (METRAHIT EXTRA only)
The STORE Menu Function
➭ First set the sampling rate for memory mode operation (see rAtE
parameter in chapter 6.4) , and then start memory mode oper-
ation.
➭ First select the desired measuring function and an appropriate
measuring range.
➭ Check the battery charge level before starting long-term
measurement recordings (see chapter 6.3).
Connect the NA X-TRA power pack if required.
Starting Recording via Menu Functions
➭ Switch to the “SET ” mode by pressing MEASURE | SETUP and se-
lect the “StorE ” menu.
1nFo
 ...  StorE 000.0%  StArt
➭ Memory mode operation is started by pressing FUNC | ENTER.
STORE appears underneath the analog display and indicates
that memory mode operation has been activated.
“StoP ” appears at the digital display.
➭ Press MEASURE | SETUP in order to return to the measuring
function.
Parameter Page: header
CLEAr
24: Clear Memory
EMpty
24: Clear Memory – appears after CLEAr
0CCvP
24: Querying Memory Occupancy
rAtE
50: rAtE – set the sampling rate (METRAHIT EXTRA only)
StArt
23: Starting Recording via Menu Functions
StoP
24: Ending Recording
MEASURE
SETUP
FUNC
ENTER
FUNC
ENTER