6
7
BATTERY REPLACEMENT
1. Replace the battery when the low battery icon is displayed.
2. In-spec measurements may be made for several hours after the
low battery indicator appears.
3. Remove the
BATTERY COVER
screw and slide the cover off.
4. Replace the battery with a fresh 9V battery (alkaline or heavy duty).
RS232 PC SERIAL INTERFACE
Use a small screwdriver to gently lift the
RS232 COVER
up to
expose the
RS232 OUTPUT
3.5 mm terminal. The signal output
is a 16-digit data stream that can be adapted to user-defined
applications. A RS232 lead with the following connection is
required to link the instrument with the PC serial interface.
Meter (3.5 mm jack plug)
PC (9W “D” Connector)
Center Pin
. . . . . . . . . . . . . Pin 4 Pin 2
2.2K
Ground Shield
. . . . . . . . . . .
Pin 2 Pin 5
resistor
The 16 digits data stream will be displayed in the following format:
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Each digit indicates the following status:
D0
End Word
D1 & D8
Display reading, D1 = LSD, D8 = MSD
E.g: If the display reading is 1234, then D8 to D1 is: 00001234
D9
Decimal Point (DP), position from right to the left
0 = No DP, 1= 1 DP, 2 = 2 DP, 3 = 3 DP
D10
0 = Positive 1 = Negative
D11 & D12
Annunciator for Display Lux = 15, Ft-cd = 16
D13
The upper display data = 1, The lower display data = 2
D14
4
D15
Start Word
RS232: 9600, N, 8, 1
Summary of Contents for 840020
Page 1: ...Light Meter Lux FC 840020 ...
