Manuale d’uso / di manutenzione del prodotto E3630A del fabbricante Agilent Technologies
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DUA L OUTPUT POWER SUPP L Y A gi lent MO DEL E3630A OPERA TING A ND SER VICE MA NUAL FOR INSTRUMENTS WITH SERIA L NUMBERS KR85014528 A ND A BOVE For instruments with Serial Numbers above KR85014528, a change page may be included .
1-2 SA FETY SUMMARY The following general safety prec autions must be observed during all phases of oper ation, service, and repair of this instrumen t. Failure to com ply with thes e precautions or with spec ific warnings elsewhere in this manual v iolates safety standards of des ign , manufacture, and intended use of the inst rument.
1-3 T able of Contents SA FETY SUMM A RY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 GENERA L INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-4 GENERAL INFORMATION IN TRO DU CTI ON This section contains general i nformation concerning the E3630A triple output pow er supply. Included are safety con- siderations, safety and EM C requirements, inst rument and manual ident ification, option and ac cessory inf ormation, instrument descript ion, and specifications.
1-5 mode. In this mode the voltage of the negative output can be set lower than that of the positive output. T he tracking ratio control allows the negative supply 's output to be set to any va lue between a max imum that is within ±5% of the positive supply 's output and a minimum that is less than 0.
1-6 INST A LLA TION INITIA L INSPE CTION Before s hipment, this instrument w as inspected and found t o be free of mecha nical and e lectrical defects. As soon as the instrument is unpacked, inspect for any dam age that may have occurred in t ransit. Sav e all packing m aterials until the inspection is com pleted.
1-7 Before applying power to the supply , check the label on the heat sink t o mak e certain that the supply's line voltage option agrees wit h the line voltage to be used . If the opti on does not correspond to your line voltage, refer to paragraph "LI NE VOL T AG E OPTION CONVERSIO N" in the service section before applying power.
1-8 Figure 3. Current Limit Characteristic of the 6V Supply this region. If the line voltage is maintained in the up per end of the input voltage range, howev er , the supply pr obably w ill operate w.
1-9 Figure 4. Rev ers e Cur rent L oading S olution.
A-1 SERVICE INFORMA TION Figure A- 1. Blo ck Di agram PRINCIPLES OF OP ERA TION (Blo ck Diagr am Over view) This sect ion presents t he principles of operation of t he E3630A Triple Out put Power S upply . T hroughout this discus- sion, refer to bot h the block d iagram of Figure A-1 and the schematic diagrams at the rear of the manual.
A-2 put is enclosed by a heavy line in Figure 3 of the operating section. If the operating point reaches the diagonal current limit line, a dec rease in load r esistance moves the op erating point down the line, reducing the out put voltage and current .
A-3 Operation V erification T ests The followin g tests assure that the power suppl y is per- formin g properl y . The y do not, however , check all the speci- fied parameters tested in the complete performance test described below . Proceed as follows: a.
A-4 Output Current Measurement. For accurate output current measurements, a current sampling resistor should be inserted between the load and the output of the supply . T o simplify grounding problems, one end of this sampli ng resistor shoul d be connected to the same output terminal of the supply which w ill be shorted to ground.
A-5 Current Limit k. Disconnect all loads from the suppl y . l. Connect the test setup shown in Fi g ure A-5 to the +20- volt output. Substitute a short for R L and leave the load circuit switch open. m. Set the volta g e of the ± 20V supplies to 20 volts.
A-6 Peak-to-Peak Measurement The peak-t o-peak measurem ent is particularly i mportant for applications where noise spikes could be detrimental to a sensitive load, such as logic circuitry. T o measure the ripple and noise of the peak-to-peak value on each output supply output: a.
A-7 St ability (Drift) Definiti on: The change in output voltage (dc to 20 Hz) for the first 8 hours following a 30-minute w arm-up period with con- stant input line voltage, constant load resistance and constant ambient tem perature. T o me asure the stability : a.
A-8 T a ble A -3 . Ini tial T robles hooting Procedu re STE P ACTION RESPONS E NEXT A CT ION 1 Check output voltage of +20V supply . a. Normal b. Zero volts c. Output voltage low er or higher than rat ing a. Proceed to step (2) . b. Check ac line fuse (F1).
A-9 Low outpu t voltage (lower t han rating) 1. Measure voltage at t he base of Q5. 2. Eliminate current limit circuit as a source of trouble by disc onnecting anode of CR1 1. 3. Measure voltage at pin 3 of U6. a. Measured voltage is less than 0 vol t.
A-10 T able A-7. +6 V Su pply T r oubl eshooti ng SYMPTOM STEP - A CTION RE SPONSE P ROBA BLE CA USE The +20V supply must operat e properly before tr oubleshooting the -20V supply . High output voltage (higher than rat ing) 1. Atte mpt to turn of f Q1 by shorting emitt er-to-base of Q1.
A-11 A DJ USTMENT A ND CA LIBR A TION Current Limit Adjustme nt +6V S upply. T o adjust the current limit circuit in t he +6V sup- ply , proceed as follows: a. Check the setting of the current limit by performing steps (p) and (q) on page A-5. (Be sure to set the output voltage to 6 volts.
A-12 REPL A C EA BLE P A RT S IN TRO DU CTI ON This section contains informat ion for ordering replacement parts. T able A-12 lists parts by reference designators and pro- vides the following information: a. Reference designators. Refer to T able A-10.
REFERE NCE DESIGNATION PART NUMBER Q'T Y DESCRIPTION MFR.
REFERE NCE DESIGNATION PART NUMBER Q'TY DESCRIPTION MFR.
REFERE NCE DESIGNATION PART NUMBER Q'TY DESCRIPTION MFR.
REFERE NCE DESIGNATION PART NUMBER Q'TY DESCRIPTION MFR.
CERTIFICATION Agilent T ec hnologies c ertifies that this pr oduct m et its published s pecificat ions at time of sh ipmen t fro m t he fa ctor y . Agilent T ech nologies furt her cert ifies that its .
DECLA RA TION O F CONFORMITY accordi ng to ISO/IEC Guid e 22 and EN 4 5014 Manufactu rer’s Name: Agilent Techno logies, In c. Manufactu rer’s Address: 3 45-15, Kasa n-dong, Kum chon-ku, Seoul 15 3.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Agilent Technologies E3630A è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Agilent Technologies E3630A - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Agilent Technologies E3630A imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Agilent Technologies E3630A ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Agilent Technologies E3630A, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Agilent Technologies E3630A.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Agilent Technologies E3630A. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Agilent Technologies E3630A insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
