Hewlett Packard 3478A Digital multimeter
Manufacturer:
Model:
3478A
Date:
1981
Category:
Group:
Description:

Information

Your new 3478A is a fully programmable HP-IB* digital multimeter. In an automatic test or on the bench, the 3478A offers 3 1/2 to 5 1/2 digit resolution for measuring dc volts, true RMS ac volts, 2- and 4- wire ohms, and dc and RMS ac current. The 3478A offers dc voltage performance from 100 nanovolt sensitivity up to 300 volts (full scale), true RMS capability up to 300 kHz, and resistance measurements from 100µΩ sensitivity to 30MΩ (full scale). Its dc and true RMS ac current measuring capability is from 1µA sensitivity up to 3A. The fast autorange capability of the 3478A allows you to make measurements over a wide dynamic range without sacrificing throughput rates. By selecting the number of digits displayed and using the autozero feature, the 3478A allows you flexibility in measurement speed and accuracy. Up to 71 readings per second can be made with the 3478A in the 3 1/2 digit mode. The 3478A has a fast trigger mode which lets you bypass the built-in settling time delay to make fast true RMS ac measurements in systems applications.

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Service Manual
Manual type:
Service Manual
Pages:
161
Size:
10.49 Mbytes (11000673 Bytes)
Language:
english
Revision:
Manual ID:
03478-90008
Date:
Quality:
Scanned document, all readable.
Upload date:
2013 11 20
MD5:
16780e340aa5741bfd8478260c17b1ff
Downloads:
1408

Information

Serials 2619A37795 and above 1-2. The information in this manual is for the Installation, Operation, Performance, Calibration, and Service of the 3478A Digital multimeter. The manual is designed for the use of Service Trained Personnel. Other users should refer to the Operators Manual. This manual is separated into the following sections. 1-3. Section I, General Information 1-4. A short description of the manual and introduction to the 3478A is in Section I. The section also lists instrument options, specifications, and Accessories. 1-5. Section II, Installation Procedures 1-6. This section explains how the 3478A is prepared for use and includes power requirements, line voltage selection, etc. The section also explains how to connect the multimeter for remote operation. 1-7. Section III, Operation 1-8. The condensed operating instructions of the 3478A for the use of Service Trained Personnel, is in this section. For more complete instructions, refer to the Operators Manual. 1-9. Section IV, Performance Test and Calibration 1-10. The 3478A’s Performance Test and Calibration Procedures are in Section IV. The Required Equipment Table and an abbreviated specification table are also included. 1-11. Section V, Replaceable Parts 1-12. Section V lists the replaceable parts of the 3478A, It also includes pictures and illustrations of chassis and mechanical parts. 1-13. Section VI, Backdating 1-14. This section has information which adapts this manual to 3478A’s with serial numbers below the ones shown on the title page. 1-15. Section VII, Service 1-16. The 3478A’s Troubleshooting Procedures, Theory Of Operation, and Schematics are in Section VII. The troubleshooting information is in the form of Service Groups which are symptoms oriented (i.e., what is the failure). The complete theory of operation is in Service Group F and the Schematics are in Service Group G (last group). 1-17. Appendix A 1-18. The appendix has a condensed description of the HP-IB (Hewlett-Packard Interface Bus).

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User Manual
Manual type:
User Manual
Pages:
104
Size:
19.44 Mbytes (20383823 Bytes)
Language:
english
Revision:
2
Manual ID:
03478-90009
Date:
Quality:
Scanned document, all readable.
Upload date:
2013 11 20
MD5:
2116b702500310f1ca6de39ea49a81cc
Downloads:
985
User Manual
Manual type:
User Manual
Pages:
107
Size:
4.03 Mbytes (4229650 Bytes)
Language:
english
Revision:
Manual ID:
03478-90055
Date:
Quality:
Scanned document, all readable.
Upload date:
2013 11 19
MD5:
317d046d640bfe2768a772c7e2ab9437
Downloads:
1064
Service Manual
Manual type:
Service Manual
Pages:
175
Size:
11.46 Mbytes (12021104 Bytes)
Language:
english
Revision:
Manual ID:
03478-90006
Date:
1984 01 01
Quality:
Scanned document, all readable.
Upload date:
2017 12 31
MD5:
e3bbdd16ea66e4ffc224f66b6152efff
Downloads:
966

Information

1-1. INTRODUCTION 1-2. The information in this manual is for the Installation, Operation, Performance, Calibration, and Service of the 3478A Digital multimeter. The manual is designed for the use of Service Trained Personnel. Other users should refer to the Operators Manual. This manual is separated into the following sections. 1-3. Section I, General Information 1-4. A short description of the manual and introduction to the 3478A is in Section I. The section also lists instrument options, specifications, and Accessories. 1-5. Section II, Installation Procedures 1-6. This section explains how the 3478A is prepared for use and includes power requirements, line voltage selection, etc. The section also explains how to connect the multimeter for remote operation. 1-7. Section III, Operation 1-8. The condensed operating instructions of the 3478A for the use of Service Trained Personnel, is in this section. For more complete instructions, refer to the Operators Manual. 1-9. Section IV, Performance Test and Calibration 1-10. The 3478A’s Performance Test and Calibration Procedures are in Section IV. The Required Equipment Table and an abbreviated specification table are also included. 1-11. Section V, Replaceable Parts 1-12. Section V lists the replaceable parts of the 3478A, It also includes pictures and illustrations of chassis and mechanical parts. 1-13. Section VI, Backdating 1-14. This section has information which adapts this manual to 3478A’s with serial numbers below the ones shown on the title page. 1-15. Section VII, Service 1-16. The 3478A’s Troubleshooting Procedures, Theory Of Operation, and Schematics are in Section VII. The troubleshooting information is in the form of Service Groups which are symptoms oriented (i.e., what is the failure). The complete theory of operation is in Service Group F and the Schematics are in Service Group G (last group). 1-17. Appendix A 1-18. The appendix has a condensed description of the HP-IB (Hewlett-Packard Interface Bus).

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