Rec Measured Value Memory; Rs232 Interface - VOLTCRAFT GM-100 Operating Instructions Manual

REC Measured Value Memory

The measured value memory records the minimum and maximum magnetic field value.
- The REC function can be activated in the measuring mode by pressing the "REC" button (7).
- The "REC" symbol now appears in the display with a beep tone.
- The recording starts. The automatic cut-out is deactivated.
- In order to call up the maximum values, press the "REC" button (7) again. "MAX" appears in the dis-
play and the value is loaded from the memory and displayed. Pressing again displays the min-value
and "MIN" in the display. The MIN/MAX display can be ended with the "HOLD" button (4) and the
"REC" button can be used to return to measurement recording. The display only shows "REC".
- In order to deactivate the REC function, hold down the "REC" button (7) for approx 2 seconds. The
"REC" symbol goes out.
The saved measured values are only retained in the REC measurement mode. If this
function is ended or if the meter is switched off the memory will be deleted.

RS232 Interface

The measuring device is fitted with a serial interface (11) for exchanging data with a computer. This can
be found on the right hand side under a cover. Open the cover with a pointed object. The interface is in
the form of a 3.5mm mono-jack plug socket and requires a compatible data cable, which is an optional
extra.
The data cable has the following components:
Jack plug 3.5 mm mono
Centre contact
External contact
The serial data signal is made up of 16 Bits in the following order:
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
9-pole D-SUB socket for PC
Pin 4
Pin 2
Between Pin 2 and Pin 5 a 2,2 KOhm resistance is
necessary.
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