MKS 651C - How To Check the Battery Voltage

Chapter Eight: Valve Failsafe Battery Back-up
Option
O
p
eration
105
Operation
How To Check the Battery Voltage
To ensure that the 651 unit has recognized the battery back-up module, or to view the actual
battery voltage and the current valve configuration without entering the software menus
(regardless of whether you are using Local or Remote operation):
1. Ensure that the default
Pressure and Position
screen appears on the display:
PRES 4.90 Torr
POS 35.0 %
2. Press the [ ] key one time.
If the battery back-up module has been recognized, the screen displays:
BATTERY 13.5V
BACK-UP: OPEN
This screen allows you to view the actual battery voltage and the current valve
configuration. The valve configuration cannot be changed from this screen. Refer to
How To Set The Battery Back-up Valve Control
, page 106, for instructions on how to
change the valve configuration; the battery voltage cannot be adjusted. Press any key to
return to the default
Pressure and Position
screen.
If the battery back-up module has
not
been recognized, the screen reverts to the initial
display screen which lists the instrument revision and the current software/firmware
version:
651C
V 1.8
Press any key to return to the default
Pressure and Position
screen.