User`s guide

M3000A/M3046A/M3015A/M3016A Service Guide
3-12 Maintaining the Instrument
The battery LED can be green, yellow, or red depending on the following conditions:
If the remaining battery-operating time is only 5 minutes, the LED flashes red at a repetition
rate of 1.5 flashes per second.
When the battery is empty, the Monitor switches off automatically (including the green On-
Off/Standby LED on the front panel). This switch-off event is memorized together with the
serial number of the battery. A restart of the Monitor with this battery is inhibited to prevent
deep discharge. Attempts to restart the Monitor (by pressing the On-Off/Standby) causes the
red LED to emit a single flash. (The flash may have a delay of up to 2.5 sec after pressing the
On-Off/Standby key). Exchanging the battery causes one of the following to happen:
• If the new battery is partly or fully loaded, the Monitor starts operating.
• If the new battery is empty:
• If the battery voltage (no load) is below 11.5V, a single red flash is emitted (assuming that
there is still enough power to emit this single flash).
• If the battery voltage is above 11.5V (no load) the Monitor tries to restart. If under this
load the battery voltage breaks down to below 10.5 V, the battery is registered as an
empty battery (the switch-off event is memorized by the Instrument together with the
serial number of the battery) and the Monitor switches off automatically. Any attempt to
restart the Monitor (by pressing the On-Off/Standby) causes the red LED to emit a single
flash. No more restarts can be attempted.
$&SRZHU <HV 1R
standby switch on or off on off
battery full
a
(no charging)
a. Relative state of charge.
green off off
battery charging yellow not applicable not applicable
replace battery
b
(>= 5 minutes
of operation left)
b. Battery voltage less than 11.5V.
not applicable 1.5 red flashes per sec. off
battery empty yellow red flash if On-Off /
Standby is pressed.
c
c. Restart is attempted if V_bat > 11.5V and battery is not registered as being empty or having a malfunction.
off
no battery off off off
battery malfunction every 2 second
briefly off
red flash if On-Off/
Standby is pressed
c
off