Hameg HM 8012 User Manual Download Page 4

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Subject to change without notice

          I m p o r t a n t   h i n t s

The warranty standards applicable are those of 
the country in which the instrument was sold. 
Reclamations should be directed to the dealer.

Only valid in EU countries

In order to speed reclamations customers in EU 
countries may also contact HAMEG directly. Also, 
after the warranty expired, the HAMEG service will 
be at your disposal for any repairs.

Return material authorization (RMA):

Prior to returning an instrument to HAMEG ask 
for a RMA number either by internet (http://www.
hameg.com) or fax. If you do not have an original 
shipping carton, you may obtain one by calling 
the HAMEG sales dept (+49-6182-800-300) or by 
sending an email to [email protected]

Maintenance

The most important characteristics of the instru-
ments should be periodically checked according to 
the instructions provided in the sections “Opera-
tional check and “Alignment procedcure. To obtain 
the normal operating temperature, the mainframe 
with inserted module should be turned on at least 
60 minutes before starting the test. The specifi ed 
alignment procedure should be strictly observed. 
When removing the case detach mains/line cord 
and any other connected cables from case of the 
mainframe HM8001-2. Remove both screws on 
rear panel and, holding case fi rmly in place, pull 
chassis forward out of case. When later replacing 
the  case,  care  should  be  taken  to  ensure  that 
it properly fi ts under the edges of the front and 
rear frames. After removal of the two screws at 
the rear of the module, both chassis covers can 
be lifted. When reclosing the module, care should 
be taken that the guides engage correctly with the 
front chassis.

Operation of the module

Provided that all hints given in the operating 
instructions of the HM8001-2 Mainframe were 
followed  especially for the selection of the cor-
rect mains voltage  start of operation consists 
practically of inserting the module into the right 
or left opening of the mainframe. The following 
precautions should be observed:

Before exchanging the module, the mainframe 
must be switched off. A small circle (o) is now 
revealed on the red power button in the front 
centre of the mainframe.

If the BNC sockets at the rear panel of the 
HM8001-2 unit were in use before, the BNC cables 
should be disconnected from the basic unit for 
safety reasons. Slide in the new module until the 
end position is reached.

Before being locked in place, the cabinet of the 
instrument is not connected to the protective earth 
terminal (banana plug above the mainframe mul-
tipoint connector). In this case, no test signal must 
be applied to the input terminals of the module.

Generally, the HM8001-2 set must be turned on 
and in full operating condition, before applying any 
test signal. If a failure of the measuring equipment 
is detected, no further measurements should 
be performed. Before switching off the unit or 
exchanging a module, the instrument must be 
disconnected from the test circuit.

Summary of Contents for HM 8012

Page 1: ...tion 10 V 0 01dBm 10nA 10m 0 1 C F Offset function relative value measurement in basicmeasurement functions Input impedance 1G 0 5V and 5V DC range RS 232 interface PC software for control and data lo...

Page 2: ...curacy 23 8 59 8dBm 0 2dBm Resolution 0 01dB above 9mV CMRR3 60dB 50 60Hz 0 5 Crest factor 7 max AC current Measurement ranges 500 A 5mA 50mA 500mA 10A Resolution 10nA 100nA 1 A 10 A 1mA Accuracy 0 5...

Page 3: ...r discon nection of the protective earth terminal is likely to render the instrument dangerous Intentional interruption is prohibited The istrument must be disconnected and secured against unintention...

Page 4: ...ould be taken to ensure that it properly ts under the edges of the front and rear frames After removal of the two screws at the rear of the module both chassis covers can be lifted When reclosing the...

Page 5: ...in con junction with the COM input low potential Current in excess of 10 A max 20 A must not be applied for a period exceeding 30 s otherwise the internal measurement resistor thermal device will blo...

Page 6: ...er range On each press the new range is displayed eetingly on the display in code form L1 for lowest range L2 for second range etc pushbutton Pushbutton for changing to higher range Each time pressed...

Page 7: ...ower range is obtained when the value drops below 4 900 counts It is possible to know which range has been selected by the unit by temporarily deactivating the AUTO mode so that the range indication c...

Page 8: ...8012 should be connected to the circuit whosepotentialwithrespecttogroundislowest For safety reasons the COM terminal must not exceed 250VDC with respect to ground Currentrangesareprotectedbyfuseagain...

Page 9: ...erpreting measurement values and for evaluating its accuracy It is de ned as the ratio between the peak voltage and the rms value of the signal Crest factor CF Vp VRMS It is a measurement of the dynam...

Page 10: ...temperature of 0 C and using the OFFSET function Note Measurement of the temperature probe line resistance should be made on the same in strument used for temperature measurements Only this procedure...

Page 11: ...eys on the front panel AY CR switches to automatic range change AN CR switches to manual range change R CR switches to the next higher range R CR switches to the next lower range If it is impossible t...

Page 12: ...mA Diode 3 50 V 50 k 50 mA 4 500 V 500 k 500 mA 5 1000 V 5 M 6 50 M 10 A P CR This command alone is used for reco vering complete parameter settings of the equipment The instrument returns string_F s...

Page 13: ...500 k 5M 0 02 for instance models CNS020 by Vishay Test procedure If one of the indicated calibrators is available or if precision calibrators are appropriate all the HM8012 measurements ranges can be...

Page 14: ...guration This one can be saved and recalled later When the con guration of the instrument is done a set of measurements can be carried out and saved for future use Furthermore the software can show d...

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