BNC 835 User Manual - Manual (Page 49)

Berkeley Nucleonics Corporation 2955 Kerner Blvd., San Rafael, CA 94901
Phone: 415-453-9955, Fax: 415-453-9956, Email: [email protected], Web: www.berkeleynucleonics.com
6 Battery Operation (B3 Option)
If your instrument is equipped with an internal rechargeable battery (B3 option) it can be operated
without the external power supply. Fully charged battery is good for up to three hours of operation at
full RF output power. The same external power adaptor (6 V @ 3 A) is used for the battery version as
for the standard model for both normal operation and charging of the battery.
There are four operating modes that are also summarized in Table 2 below:
normal operation– the external power supply is connected to the instrument and the device is turned
ON (with the power switch on the rear panel turned ON). In this mode the instrument can be used as if
no battery was present. The internal battery is not used and will NOT be charged.
charging – the external power supply is connected to the instrument and the device is turned OFF
(with the power switch on the rear panel turned OFF). In this mode the instrument is charging the
internal battery. Once the battery is fully charged, the instrument goes into standby mode. Time
required to complete charging is approx. four hours.
standby – the internal battery is fully charged and the instrument is turned OFF.
battery operation – the external power supply is disconnected and the device is turned ON. The
internal battery is supplying the power until it is exhausted.
Table 2: Operating modes of an instrument equipped with internal battery
External power
adaptor
Power Switch
supplying power disconnected
ON
Normal operation
(no charging)
Battery operation - until
discharged (1)
OFF
Charging – when fully charged
 standby (2)
Completely powered off
Notes:
(1) The instrument will switch off automatically when the battery is discharged. It is recommended that
the power switch is turned to the OFF position when the battery is fully discharged.
(2) Termination of charging is automatic. The unit will then enter standby mode. The power adaptor
can be left connected for any length of time.
During operation the approximate remaining battery capacity is indicated by the battery symbol visible
in the upper right corner of the display (see Figure 6-a )