Setting Bcivsf Parameters; Equipment Required; Procedure - Enfora Enabler LPP G Integration Manual

7.4.1. Setting BCIVSF parameters

BCIVSF sets the scaling factor so the battery voltage reported by the Triton-Lite matches the real battery
voltage on the Vbat pin. This one-time calibration should be done at module production.

7.4.2. Equipment required


Programmable power supply with <10mV resolution and voltage sense lines.

A notebook or desktop computer with any version of Microsoft Windows that has the
HyperTerminal communications program. If this hardware is not available, the user could use a
DOS terminal emulation program.

7.4.3. Procedure

This procedure assumes an appropriate test fixture is used.
1. Disconnect battery (if connected), and connect power supply to Vbat test point.
2. Perform the following procedure:
Action
1 Set power supply
2 Establish serial
communications with
device
3 Fill in default values.
This reads in the
parameters without
changing their values.
4 Set voltage averaging to
0. Note original value for
later.
5 Preset voltage scaling to
<num>=1700 and
<offset>=0.
6 Disable charging.
7 Ensure State=3(SUP).
8 Read Vbat (mV) after
trace update.
9 Calculate <new_num>
10 Set voltage scaling factor
11 Verify results after trace
update.
12 Restore settings
Note: The values that are red indicate the values that will need to be set.
LPP0108IG001
Command
AT$BCIAVG=,
AT$BCIVSF=,
AT$BCIISF=,
AT$BCIAVG=0,5,10,10000
AT$BCIVSF = 1700,0
AT$BCIOFF=1
AT$BCIDBG=2,0
Vbat(mV)=xxxx
AT$BCIVSF = <new_num>,0
AT$BCIAVG=<previous>,5,10,10000
AT$BCIOFF=0
AT$BCIDBG=0,0
39
Power
supply
On, Voltage =
3700mV
Off
Version - Preliminary – 06/20/08
Calculation
<new_num> =
1700*3700 /
Vbat(mV)
Vbat(mV)=3700
+/-10mV