Initialisation - Philips PM2521 Service Manual

27
1.4.
1. 1.
Initialisation
In this
phase the
jUP fills
the
internal
RAM
locations
as
an instruction reference for the
}jP.
For example,
if
the
AUTO
bit
is
set,
then the
/xP
knows
that
AUTO-RANGING
is
selected.
The
values of
a
measurement
or
a
calibration
measurement
are also
saved
in
these
registers.
PROGRAM MEMORY
CONTENTS
(for
example)
ADDRESS
BIT
POSITION
DECIMAL
7 6
5
4 3
2
1
0
20
IT
OUT
CALC ME
AS SUP
ZMON
21
~
°C
V
A
s
Hz
Trigger
YFU
level
22 RM2 RM1
RMO
YRM
23
24 Mauto Rdown Rup
YRSC
25
M7 M6
M5 M4 M3 M2
Ml
MO
YMN
26
27
28
dB
gate
Zero S
Lobat
CAL OL
YDM
29
2A
B7**
*******
**BIN/3
vRY
RESU
j^1>*******
***B0
2B
2C POS
ZMON
YFU
YRM
YRSC
YMN
YDM
= Monitor
(which routine?)
IT
=
initialisation
OUT
=
display
output
routine
CALC
=
calculation routine
MEAS
= measurement
routine
SUP
=
set
up
routine
= Function
(which function?)
= Range meter
(which range
?)
= Range
control status
(up^down
or
auto
ranging)
= Measurement
number
=
Display
mode
(which
symbol
to the display?)