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71M6515H Demo Board User’s Manual
Operating Time/RTC Area (19):
This area consists of three display fields and two rectangular buttons, all located towards the lower right
edge of the GUI window.
GUI Element
(Label)
Operating time
Real Time
Clock
Real Time
Clock
Set RTC
EXIT
Element
Type
Display field
Display field
Display field
Rectangular
button
Rectangular
Function
Displays the total operating time of the 6515H chip, measured in 0.01
hours.
Displays the date of year according to the RTC in the 6515H chip.
Displays the time of day according to the RTC in the 6515H chip.
Pressing this button synchronizes the RTC of the 6515H chip with the
clock of the host PC.
Pressing this button will terminate the GUI control program.
button
Chip Version Area (20):
This area consists of only one display field.
GUI Element
(Label)
Chip Version
Function
This field displays the type and version of the 6515H chip, e.g. 6515HB03.
1.8.6
ADJUSTING THE KH FACTOR FOR THE DEMO BOARD
The Kh factor (i.e. energy per pulse) is determined by the following equation:
Kh =
VMAX IMAX In 8
SUM _ CYCLES WRATE X
1 . 5757 Wh / Pulse
Where:
VMAX :
IMAX
The RMS voltage value that corresponds to the 250mV maximum input signal to
the IC (default = 600V).
The RMS current value that corresponds to the 250mV maximum input signal to
the IC (default = 208A).
SUM_CYCLES The value controlling the length of the accumulation cycle, as determined by bits 8-
13 in the CONFIG register (default = 60). The length of an accumulation cycle is
t = SUM_CYCLES * 16.66ms.
WRATE
X
The value in the pulse rate control register WRATE , (default = 683).
The pulse rate acceleration factor, determined by bits 25 ( PULSE_FAST ) and 26
( PULSE_SLOW ) in the CONFIG register (default = 1.5).
Almost any desired Kh factor can be selected for the Demo Board by resolving the formula for WRATE.
Revision 2.0
? Copyright 2005 TERIDIAN Semiconductor Corporation
24 of 66
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