12. BATTERY REPLACEMENT
1) When the left corner of " Lobattery symbol " indicator
is light, it is necessary to replace the battery. However, in-spec.
measurement may still be made for several hours after
low battery indicator appears before the instrument
become inaccurate.
2) take away the " Battery Cover " ( 3-14, Fig. 1 )
from the instrument and remove the battery.
3) Replace with DC 1.5 V battery ( UM3, AA,
Alkaline/heavy duty ) x 4 PCs, and reinstate the cover.
4) Make sure the battery cover is secured after changing
the battery.
13. RS232 PC SERIAL INTERFACE
The instrument has RS232 PC serial interface via a 3.5
mm terminal ( 3-10, Fig. 1 ).
The data output is a 16 digit stream which can be
utilized for user's specific application.
A RS232 lead with the following connection will be
required to link the instrument with the PC serial port.
Meter
PC
(9W 'D" Connector)
Center Pin............................................Pin 4
(3.5 mm jack plug)
Ground/shield...........................................Pin 2
2.2 K
resistor
Pin 5
14
