21
Figure 3.9.3
– Voltage drop during battery discharging.
When the threshold voltage of 22 V is achieved and most of the battery power is
released, the system begins to send alarm messages about low battery charge
and the upcoming disconnection using SNMP trap, Syslog, SMTP protocols
(presetting required). When voltage drops to 20 V, the battery goes off. This
allows to prevent deep discharging of the battery.
Table 3.9.3.1
– BAT indicator
State
Description
Battery disconnected or switch de-energized
Battery charging
Battery discharging
Battery reached the critical discharge levels of 22V
where
indicator is OFF
indicator is ON
indicator 1 s ON, 1 s OFF
indicator blinks 1 time in 4 seconds
Battery time depends on several factors: camera power consumption, ambient
temperature, battery residual capacity. The most significant factor is camera
power consumption.
