Philips PM2517X - Page 22

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10

DRY CELL

BATTERIES

OR 9V EXTERNAL

POWER

SUPPLY

PM

9218

TO AATTERY

COMPARTMENT

PM 2517E/01

Serial

numbers DM600

-

Dl\4900

PM 2511E/O1

Serial numbersDM900 and

f

ollowing

RECHARGEABLE

BATTERIES

WITH EXTERNAL

POWER SUPPLY PM 9218

PM 2511E/O1

Serial numbers

DlV1600

-

Dlvl900

PROBE

PM

2517E/01

Serial

numbers

Dl\4900 and following

INTERCONNECTION

Fig.

l. Power supply

Table of Contents

Starting Problems OQ00634
Error Description7
Battery Cover7
Incorrect Reading in the Ma Ranges7
Textplates12
Table of Contents13
Technical Data17
Electrical Specifications17
- D.C Voltage Measurements17
- A.C Voltag Measurements17
- D.C. Current Measurements18
- A.C. Current Measurements18
- Resistance Measurements18
- Diode Measurements19
- Temperature Measurements19
General Data19
Power Supply with Rechargeable Batteries20
- Optional Accessories21
- Temperature Probe21
- Data Hold Probe21
Accessories Supplied with the Instrument I21
HF Probe Type23
Optional Accessories I23
- RF Probe PM24
- Circuit Description26
- General26
- Principle of Operation26
- Analog to Digital Converter27
- Digital Section27
- Direct and Alternating Current Measurement27
- Alternating Voltage Measurements27
- Display28
- Power Supply28
- Detailed Circuit Description29
- Analog Section29
- A.C. Voltage Measurements30
C I R C U I T D E S C R I P T I O30
G E N E R a30
A D J U S T I N G T a B L30
P O W E R S U P P L30
- I N S I D E V I E W O F T O P C O V E30
- P I N N I N G a N D B L O C K D I a G R a M O F O30
- P I N N I N G H E30
- R O B E P L V30
- 3.3. 2. 7. Temperatu Re Measu Rements36
- Fixed Time36
- Fixed Level36
- Adc36
- Output37
- Example of a Data Signal37
- Voltage to Current Convertor38
- ADC Switching Part38
- Control Logic40
D I S P L a y40
A D40
- Control Signals41
- Clock41
- Data41
- Aut41
R a N G I N G41
- Auto Ranging43
- Dh43
- Fa, Fb, Fc, Fd43
- Manual Ranging43
- Az44
- Ds1, Ds2, Laen44
- Ovr44
- Pol44
- Decimal Point45
- Polarity and Unit Indication45
- Serial Display45
- HEF 4511 B BCD to 7-Segment Latch Decoder48
- Specification of IC's Used48
- Function Table49
- Dual 1-0F4 Decoder/Demultiplixer50
- Character Decoder Driver51
- B I O C K D I a G R a M O F D I G I T a L S E C T I O53
- D a T a S I G N a L S E X a M P L E S53
- D I S M a N T L I N G T H E P L V53
- F a U L T F I N D I N G B L O C K D I a G R a53
- P I N N I N G O53
- Digital Control and Autoranging Circuit54
- Specifications of Inputs and Outputs60
- Specification of the Inputs and Outputs62
- Access65
- Dismantling the PM 251765
- Replacing Parts65
- Slide Switch65
- Window66
- Battery Springs66
- Display Unit66
- Shunt66
- Checking and Adjusting68
- Adjusting Table69
- Fault-Finding Procedure71
- Service Hints71
- Fault Finding71
6 . 7 . a R a N G E S72
Stand by72
- No or Incorrect Power73
- Indication LED MAIN Is Not Lighted74
- No LED Lighted74
- Only Indication Led's Are Lighted74
- One 7. Segment LED Is Blanked75
- One Segment of All Led's Is Incorrect75
- Two 7. Segment Led's Are Blanked75
- Display Constant76
- Attenuator79
- Display Cannot be Adjusted to Zero79
- B L O C K D I a G R a M O81
- H F P R O B E P81
- Incorrect Ranging81
- No Auto Ranging81
- V-Ranges82
- Oscillating between Two V Ranges82
D a T a H O L D82
- E H T P R O B E P83
B L O C K D I a G R a M H E85
P a B T S L I S T88
- L R R T88
- O L T a G E M E a S U R E M E N T88
- U R R E N T M E a S U R E M E N T88
- A D J U S T I N G E L E M E N T88
- O a R D S C O M P O N E N T S I D E P I88
- Parts List90
- Mechanical90
L V L E C H a N I C a L90
- O L T a G E M E a S U R E M E N T S90
  - Electrical92
  - Resistors92
- M O U N T I N G T H E P O W E R S W I T C H K N O95
- B L O C K D I a G R a M H E96
- Modifications96
- T I M I N G O F D I S P L a y U N I L96
- P I N N I N G H E104

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