Hameg HM 2005 Manual 

Hameg HM 2005 Manual  Manual pdf 7 page image

7Subject to change without noticeField of applicationThe instrument is specified for operation in industry, light industry,commercial and residential environments.The instrument has been designed for indoor use. The permissibleambient temperature range during operation is +10°C (+50°F) ...+40°C (+104°F). It may occasionally be subjected to temperaturesbetween +10°C (+50°F) and -10°C (+14°F) without degrading itssafety. The permissible ambient temperature range for storage ortransportation is -40°C (-40°F) ... +70°C (+158°F). The maximumoperating altitude is up to 2200m (non-operating 15000m). Themaximum relative humidity is up to 80%.If condensed water exists in the instrument it should beacclimatized before switching on. In some cases (e.g. extremelycold oscilloscope) two hours should be allowed before theinstrument is put into operation. The instrument should be keptin a clean and dry room and must not be operated in explosive,corrosive, dusty, or moist environments. The oscilloscope can beoperated in any position, but the convection cooling must not beimpaired. The ventilation holes may not be covered. For continuousoperation the instrument should be used in the horizontal position,preferably tilted upwards, resting on the tilt handle.The specifications stating tolerances are only valid if the instrumenthas warmed up for 30minutes at an ambient temperature between+15°C (+59°F) and +30°C (+86°F). Values without tolerances aretypical for an average instrument.EMCThis instrument conforms to the European standards regardingthe electromagnetic compatibility. The applied standards are:Generic immunity standard EN50082-2:1995 (for industrialenvironment) Generic emission standard EN50081-1:1992 ( forresidential, commercial and light industry environment).This means that the instrument has been tested to the higheststandards. Please note that under the influence of strongelectromagnetic fields, such signals may be superimposedon the measured signals. Under certain conditions this isunavoidable due to the instrument’s high input sensitivity, highinput impedance and bandwidth. Shielded measuring cables,shielding and earthing of the device under test may reduce oreliminate those effects.WarrantyHAMEG warrants to its Customers that the products itmanufactures and sells will be free from defects in materialsand workmanship for a period of 2 years. This warranty shallnot apply to any defect, failure or damage caused by improperuse or inadequate maintenance and care. HAMEG shall not beobliged to provide service under this warranty to repair damageresulting from attempts by personnel other than HAMEGrepresentatives to install, repair, service or modify these products.In order to obtain service under this warranty, Customers mustcontact and notify the distributor who has sold the product. Eachinstrument is subjected to a quality test with 10 hour burn-inbefore leaving the production. Practically all early failures aredetected by this method. In the case of shipments by post, railor carrier the original packing must be used. Transport damagesand damage due to gross negligence are not covered by theguarantee.In the case of a complaint, a label should be attached to thehousing of the instrument which describes briefly the faultsobserved. If at the same time the name and telephone number(dialing code and telephone or direct number or departmentdesignation) is stated for possible queries, this helps towardsspeeding up the processing of guarantee claims.MaintenanceVarious important properties of the oscilloscope should becarefully checked at certain intervals. Only in this way is it largelycertain that all signals are displayed with the accuracy on whichthe technical data are based. Purchase of the HAMEG scopetester HZ 60, which despite its low price is highly suitable fortasks of this type, is very much recommended. The exterior ofthe oscilloscope should be cleaned regularly with a dusting brush.Dirt which is difficult to remove on the casing and handle, theplastic and aluminum parts, can be removed with a moistenedcloth (99% water +1% mild detergent). Spirit or washing benzene(petroleum ether) can be used to remove greasy dirt. The screenmay be cleaned with water or washing benzene (but not withspirit (alcohol) or solvents), it must then be wiped with a dryclean lint-free cloth. Under no circumstances may the cleaningfluid get into the instrument. The use of other cleaning agentscan attack the plastic and paint surfaces.Protective Switch OffThis instrument is equipped with a switch mode power supply. Ithas both over voltage and overload protection, which will causethe switch mode supply to limit power consumption to aminimum. In this case a ticking noise may be heard.Power supplyThe instrument operates on mains/line voltages between 100V ACand 240V AC. No means of switching to different input voltageshas therefore been provided.The power input fuse is externally accessible. The fuse holderand the 3 pole power connector is an integrated unit. The powerinput fuse can be exchanged after the rubber connector isremoved. The fuse holder can be released by lever action withthe aid of a screwdriver. The starting point is a slot located oncontact pin side. The fuse can then be pushed out of the mountingand replaced.The fuse holder must be pushed in against the spring pressureand locked. Use of patched fuses or short circuiting of the fuseholder is not permissible; HAMEG assumes no liability whats-oever for any damage caused as a result, and all warranty claimsbecome null and void.Fuse type:Size 5x20mm; 0.8A, 250V AC fuse;must meet IEC specification 127,Sheet III (or DIN 41 662or DIN 41 571, sheet 3).Time characteristic: time lag.Attention!There is a fuse located inside the instrument withinthe switch mode power supply:Size 5x20mm; 0.8A, 250V AC fuse;must meet IEC specification 127,Sheet III (or DIN 41 662or DIN 41 571, sheet 3).Time characteristic: fast (F).The operator must not replace this fuse!Important hints