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A-4

Figure A-4. RMS Measurement Test Setup 

PARD(Peak-to-Peak) Measurement 

Test Parameter:

 

Measured Variable: Output voltage(peak-to-peak) 
Expected Results: Less than 2 mV p-p 

Test Procedure:

  

a. Connect the test equipment as shown in Figure A-5.  
b. Turn the unit's power on and turn CURRENT control fully clock-

wise.  

c.

Turn up output voltage to the full rated value. Check that the 
unit's CV Indicator remains lighted. Reduce VOLTAGE control 
if not lighted.

d. Set the oscilloscope to AC mode and bandwidth to 20 MHz.  
e. Check that the peak-to-peak noise is no more than 2 mV. 

Figure A-5. Peak-to-Peak Measurement Test Setup 

Constant Current(CC) Tests 

For output current measurements the current sampling resistor must
be treated as a four terminal device. In the manner of a meter shunt, 

the load current is fed to the extremes of the wire leading to the resis-
tor  while  the  sampling  terminals  are  located  as  close  as  possible  to
the resistance portion itself. Generally, any current sampling resistor
should  be  of  the  low  noise,  low  temperature  coefficient  type  end
should be used at no more than 5% of its rated power so that its tem-
perature rise will be minimized. 

Load Effect(Load Regulation) 

Definition:

 CC Load Effect is  the  change in  dc output  current when

load resistance changes from short circuit to full load or from full load
to short circuit. 

Test Parameter: 

Measured Variable: Output Current 
Expected Results: Less than 0.01% plus 1 mA 

Test Procedure: 

a. Connect the DVM across R

s

 in Figure A-2. Operate the elec-

tronic load in constant voltage mode and set its voltage to the 
full rated value of power supply. 

b.

Turn the unit's power on and turn VOLTAGE control fully clock 
wise. 

c.

Turn up output current to the full rated value. Check that the 
AMPS display reads full rated values and CC indicator remains 
lighted. Reduce CURRENT control if not lighted. 

d. Record the voltage across Rs and convert it to current through 

dividing by R

s

e.

Operate the electronic load in short(input short mode). 

f.

When the reading settles, record voltage across R

s

 again. 

Check that the two recorded readings differ no more than 
0.01% of output current plus 1 mA. 

Source Effect(Line Regulation) 

Definition:

 Source Effect is the change in dc output current when the

ac input voltage changes from the minimum to maximum val ue(± 10%
of nominal voltage). 

Test Parameter:

 

Measured Variable: Output Current 
Expected Results: Less than 0.01% plus 1 mA 

Test Procedure: 

a. Connect the DVM across R

s

 in Figure A-2. Operate the elec-

tronic load in constant voltage mode and set its voltage to the 
full rated value of power supply. 

b.

Connect the unit to the ac power line through a variable autotrans-
former that set for low line voltage(104 Vac for 115 Vec). 

c.

Turn the unit's power on snd turn VOLTAGE control fully clock wise. 

d. Turn up output current to the full rated value. Check that the 

AMPS display reads full rated values and CC indicator remains 
lighted. Reduce CURRENT control if not lighted. 

e.

Record output voltage across Rs and convert it to current through 
dividing by R

s

.

f.

Adjust autotransformer to the high line voltage(127 Vac for 115 Vac). 

g.

When the reading settles, record the voltage across R

s

 again. 

Check that the two recorded readings differ no more than 0.01% 
of output current plus 1 mA. 

PARD(Ripple and Noise) 

Definition:

 Periodic and random deviation(PARD) in the unit's output

ripple and noise combine to produce a residual ac current as well as 

Summary of Contents for E361 A Series

Page 1: ...ent E3611A Agilent E3612A Manual Part No 5959 5304 April 2000 Edition 5 0 1 233 41 50604 7 86 943 896 01 2 3 45 3 86 77 896 3 6 0 7 8 3 4 9 4 5 9 0 9 04 896 4 2 01 4 9 4 0 7 8 2 0 04 2 0 8 6 2 A B 24 4 947 6 8 0 C 6 C 04 6 8 04 8 0 86 943 896 D E D F D G D G D G D G D G D G D H D H D H D H D H D I D I D I 1 1 ...

Page 2: ... avoid injuries always disconnect power dis charge circuits and remove external voltage sources before touching components SAFETY SYMBOLS Instruction manual symbol the product will be marked with this symbol when it is necessary for the user to refer to the instruction manual Indicate earth ground terminal The WARNING sign denotes a hazard It calls attention to a proce dure practice or the like wh...

Page 3: ...rift for 8 hours after an initial warm up of 30 min utes Constant Current Less than 0 1 plus 10 mA total drift for 8 hours after an initial warm up of 30 min utes METER ACCURACY 0 5 2 counts at 25 C 5 C OVERLOAD PROTECTION A continuously acting constant current circuit protects the power supply for all overloads including a direct short placed across the terminals The constant voltage circuit limi...

Page 4: ...lude e brief description of the problem The Turn On Checkout Procedure in this manual can be used as an incoming inspection check to verify that the sup ply is operational See the appendix for tests that verify the supply s specifications Location And Cooling Figure 1 shows the outline shape and dimensions of the unit It is shipped ready for bench operation after connection to an ac power source T...

Page 5: ...current operation proceed as follows a Turn CURRENT control fully counter clockwise to ensure that output decreases to 0 A and than turn on power sup ply b Adjust VOLTAGE control no load connected for maxi mum output voltage allowable voltage limit as deter mined by load conditions During actual operation if a load change causes the voltage limit to be exceeded the power supply will automatically ...

Page 6: ...t duration during constant voltage operation Any capacitance added externally will improve the pulse current capability but will decrease the safety provided by the current limiting circuit A high current pulse may damage load components before the average output current is Iarge enough to cause the current limiting circuit to operate Reverse Current Loading Active loads connected to the power sup...

Page 7: ...mpedance to be infinite and changes the output voltage in response to any load resistance change it is obvious that the two amplifiers can not oper ate simultaneously For any given value of load resistance the power supply must act either as a constant voltage source or as a constant current source it can not be both transfer between these two modes is accomplished at a value of load resistance eq...

Page 8: ... Off mode f When the reading settles record the output voltage again Check that the two recorded readings differ no more than 0 01 of output voltage plus 2 mV Figure A 2 Basic Test Setup Source Effect Line Regulation Definition Source effect is the change in dc output voltage when the ac input voltage changes from a minimum to maximum value 10 of nominal voltage Test Parameter Measured Variable Ou...

Page 9: ... output voltage to the full rated value d Set the electronic load to transient operation mode between one half of unit s full rated value and unit s full rated value at a 1 KHz rate with 50 duty cycle e Set the oscilloscope for ac coupling internal sync and lock on either the positive or negative load transient f Adjust the oscilloscope to display transients as in Figure A 3 g Check that the pulse...

Page 10: ...urn the unit s power on and turn VOLTAGE control fully clock wise c Turn up output current to the full rated value Check that the AMPS display reads full rated values and CC indicator remains lighted Reduce CURRENT control if not lighted d Record the voltage across Rs and convert it to current through dividing by Rs e Operate the electronic load in short input short mode f When the reading settles...

Page 11: ...ak voltage across Rs and convert it to cur rent through dividing by Rs Check that the peak to peak noise current is no more than 1 mA Figure A 6 RMS Measurement Test setup CALIBRATION PROCEDURE To calibrate ammeter and full scale current connect test equipments as shown in Figure A 7 Figure A 7 Calibration in High Current Range Calibration in High Current Range a Turn VOLTAGE and CURRENT control f...

Page 12: ...AC120 0E 7 7 2 3 B 8 8 30 AC120 0E 7 7 C34 3 B 8 8 30 AC120 0E 8 7 7 2 B 3 B 8 8 30 AC120 0E 7 7 2 3 B 8 88 30 AC120 0E 7 7 C34 3 B 8 8 30 AC120 0E 8 7 7 2 B 3 B 8 30 AC120 0E 7 7 2 3 B 8 30 AC120 0E 7 7 7B 77 F C A6 1 7 7 8 0 5 0A CC CC 4 C 7 7 8 C 92A 0 0 03 7 7 7B 77 C A6 1 7 7 8 7 3 0 C2 4 0 6 7 7 8 8 B C90 95 F 7 7 8 92AA 9320 9 2 0 7 7 C34D2 B 1 1 C 8 A34 7 7 2 1 8BB 1 C 8 7 7 8 5 3 C A 4 9 ...

Page 13: ... 2 0 4 5 7 6 7 5 5 0 649 80 2 8 0 4 5 6 7 0 649 80 2 8 0 6 5 649 0 2 8 0 4 5 6 5 649 2 8 0 4 5 6 5 649 58 2 8 0 4 5 6 0 A 46 64 B C 4 5 7 6 0 649 58 2 8 0 4 5 6 0 649 58 2 8 0 6 7 5 649 02 6 7 0 649 6 2 0 4 5 6 5 649 8 2 8 0 4 5 6 5 5 649 08 2 8 0 4 5 6 5 649 8 0 2 8 0 4 5 6 5 0 649 0 2 8 0 4 5 6 5 0 649 5 2 8 0 4 5 6 07 5 5 649 85 02 0 4 5 6 07 5 649 8 02 0 4 5 6 07 5 5 649 2 6 5 0 649 5 2 8 0 6 ...

Page 14: ...4 2 D 8 22 C 022 2343 5 0 5 2 4 E F 7D 9 7 2343 5 6 2 4 3 E F 7D 9 2343 5 2 2 4 E F 7D 9 2343 2 2 DC C D9A 2343 2 3 4 7 89A 2343 4 352 G 97 G 2343 5 5 3 B G 97 9 2343 5 5 3 B G 97 9 2343 5 2 5 2 3 B G 97 9 2343 3 1 2 8 22 C 022 2343 5 2 B89A89C 76 A 2343 5 2 2 B89A89C 76B 2343 5 2 B89A89C 76C 9 2343 4 352 9 B 2343 2 44 9D7 0 AB 2343 5 5 5 0 1234 34 2343 5 5 5 0 1233 34 2343 5 2 5 2 5 0 1235 34 234...

Page 15: ...566 641 4 0 4 6 4 0 24 4 0 561 4 0 79 4 0 56 367 47 8 4 8 6 8 562 0 5 0 5 0 5 56936A 2 4 0 516 4 0 51131 6 47 4 0 517 6A 6 8 6 8 B13 CD05 8 D 0 9 8 8 5 5 8 8 5 5 8 5 5 E 8 0 0 F 0 DG 40HI JKLMI NO KLL PNQRNSIST EQKUVIW KUI XHNYS ZS THI K NJI PNQRNSIST JKLMI TK LI4 4 LL UIXZXTNUX KUI 4 3 3 KSW NHQX3 MSLIXX NTHIUYZXI XRIPZOZIW4 64 LL PKRKPZTNUX KUI QZPUNOKUKWX3 MSLIXX NTHIUYZXI XRIPZOZIW4 14D D 0 XY...

Page 16: ......

Page 17: ... initial purchase are included in Agilent s product price only if Customer pays Agilent international prices defined as destination local currency price or U S or Geneva Export price If Agilent is unable within a reasonable time to repair or replace any product to condition as warranted the Customer shall be entitled to a refund of the purchase price upon return of the product to Agilent The warra...

Page 18: ...rdingly Conforms with the following product standards The product herewith complies with the requirements of the EMC Directive 89 336 EEC including 93 68 EEC and carries the CE Marking accordingly European Union As detailed in Electromagnetic Compatibility EMC Certificate of Conformance No TCF CC TCF 00 102 based on Technical Construction File TCF No ANJ12 dated 20 12 2000 EMC Assessed by Celestic...

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