Connection Schematics - Kanardia INDU Manual

Altimeter — Manual
1. Run Indu Altimeter on the system bus until the battery is fully charged –
wait until the small green rectangle appears on the screen. This indicates
that battery was fully charged.
2. Disconnect the system bus, so that Altimeter (and perhaps some other
instrument like Indu Airspeed Indicator) is now running only on backup
battery. The battery symbol must appear.
3. Start measuring time.
4. If the instrument is still running after 30 minutes, then the capacity of
the backup battery is still sufficient. If you do not reach 30 minutes, the
battery must be replaced.
5. You can stop measuring when you reach 30 minutes.
Indu Altimeter has internal protection, which will disconnect the battery once
the voltage in the battery is critical low. This prevents permanent damage of
the battery.
A completely depleted battery should recharge in about 2.5 hours.
7.4

Connection Schematics

The backup battery version of Indu Altimeter has two independent circuits.
The first circuit connects the instrument with the system bus while the second
circuit is used to switch the backup battery on/off.
This gives the following combinations:
Sys. Bus Backup
Off
On
Off
On
Table 3: Possible backup battery switch combinations.
From serial number 21074 the backup battery version of Indu Altimeter is
using internal circuit for enabling backup power. If you have Indu Altimeter
with serial number higher than 21074, please refer to section 7.4.1 otherwise
to section 7.4.2.
Result
Off Altimeter is switched off.
On Normal operation.
On Altimeter works on backup battery only.
Off Altimeter works on system bus. Battery system er-
ror symbol appears because backup is not available.
7.4 Connection Schematics
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