Display Section - Philips PM2521 Service Manual

04
1.4.3.
Analog
section
(extended
measurements)
39
1.4. 3.1.
Frequency measurements
39
1.4. 3. 2.
Time measurements
40
1.4. 3. 3.
Trigger
measurements
40
1.4.4.
Analog
section (multifunction measurements) 41
1.
4.4.1. R.M.S. convertor
41
1.
4.4.2.
Impedance
convertor
42
1.4.4.
3.
Active
filter
43
1
.4.4.4. Analog-to-Digital
convertor
44
1.4.5.
Control
section
45
1.4. 5.1. Interrupt controller
45
1.4. 5. 2.
Counter and
Input control 47
1.4. 5. 3.
Analog
control 48
1.4. 5.4.
ROM
circuit
and Address/Data decoding
54
1.4.6.
Display section 56
1.4.7.
Power
supply 56