840 Operators Manual
Model 840 Operator Manual Rev. 1.9 Page 6 of 29
SW1
Jumper for RS-485
Shield to Earth
Grnd.
SW0V
Battery Restore
Switch
VDC
POWER
SWITCH
SW4
VAC
POWER
SWITCH
J2
J8
EXTERNAL
DC IN
JP1
EXTERNAL
AC IN
VOLTAGE
SELECT
+
PS2
SW2
SW3
BATTERY
PS1
Figure 4 Mother Board Layout
