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Summary of Contents for Keysight Technologies E3620A
- Page 1 Keysight E3620A Dual Output Power Supply Operating and Service Manual...
- Page 2 FAR 27.401 or DFAR could result in personal injury or death. 227.7103-5 (c), as applicable in any Do not proceed beyond a WARNING technical data. notice until the indicated conditions are fully understood and met. Keysight E3620A Operating and Service Manual...
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Page 3: Certification
This Keysight Technologies instrument product is warranted against defects in material and workmanship for a period of one year from date of shipment. During the warranty period, Keysight Technologies will at its option, either repair or replace products which prove to be defective. For warranty service or repair, this product must be returned to a service facility designated by Keysight Technologies. -
Page 4: Exclusive Remedies
Exclusive Remedies THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND EXCLUSIVE REMEDIES. KEYSIGHT TECHNOLOGIES SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY. Safety Considerations Read the information below before using this instrument. -
Page 5: Waste Electrical And Electronic Equipment (Weee) Directive
To contact Keysight for sales and technical support, refer to the support links on the following Keysight websites: – www.keysight.com/find/powersupply (product-specific information and support, software and documentation updates) – www.keysight.com/find/assist (worldwide contact information for repair and service) Keysight E3620A Operating and Service Manual... - Page 6 THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight E3620A Operating and Service Manual...
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Page 7: Table Of Contents
......... . .25 Keysight E3620A Operating and Service Manual... - Page 8 ........50 Keysight E3620A Operating and Service Manual...
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Page 9: List Of Figures
......36 Figure 1-9 Ripple and Noise rms Measurement Test Setup ..38 Figure 1-10 Load Transient Response Time Waveform ..41 Keysight E3620A Operating and Service Manual... - Page 10 Keysight E3620A Operating and Service Manual...
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Page 11: List Of Tables
....... .16 Table 1-2 Test Equipment Required ..... . .29 Keysight E3620A Operating and Service Manual... - Page 12 THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight E3620A Operating and Service Manual...
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Page 13: General Information
General Information Description The Model E3620A Dual Output Power Supply is a compact, constant voltage/ current limiting supply that delivers two isolated 0 to 25 V outputs rated at 1 A. It is an ideal power supply for design and breadboard work where single or dual voltages are required. -
Page 14: Safety And Emc Requirements
If a yellow Change Sheet is supplied with this manual, its purpose is to explain any differences between your instrument and the instrument described in this manual. The Change Sheet may also contain information for correcting errors in the manual. Keysight E3620A Operating and Service Manual... -
Page 15: Options
5063 - 9240 Rack Kit for mounting one or two 3 1/2" high supplies in a standard 19" rack The rack mount kit is needed for rack mounting of the E3620A power supply Specifications Instrument specifications are listed in Table 1. These specifications are performance standards or limits against which the instrument is tested. -
Page 16: Line Fuse
Less than 50 msec for output recovery to within 15 mV of nominal output voltage following a load Response Time change from full load to half load, or vice versa. Meter Accuracy : ± (0.5% of output + 2 counts) Keysight E3620A Operating and Service Manual... - Page 17 212.3 mmW x 88.1 mmH x 345.4 mmD DIMENSIONS (8.4 inW x 3.5 inH x 13.6 inD) 5.0 kg (11.0 lbs) net, 6.25 kg (13.8 lbs) shipping WEIGHT This instrument is Intended for Indoor use. Keysight E3620A Operating and Service Manual...
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Page 18: Installation
Save all packing materials until the inspection is completed. If damage is found, a claim should be filed with the carrier. The Keysight Technologies Sales and Service office should be notified as soon as possible. -
Page 19: Input Power Requirements
The power supply is equipped at the factory with a power cord plug appropriate for the user's location. Notify the nearest Keysight Sales and Service Office if the appropriate power cord is not included with the supply. Figure 1-1 Outline Diagram Keysight E3620A Operating and Service Manual... -
Page 20: Operating Instructions
Operating Instructions Introduction This section describes the operating controls and indicators, turn-on checkout procedures, and other operating considerations for the Model E3620A Dual Output Power Supply. Before applying power to the supply, check the label on the heat sink to... -
Page 21: Controls
)set the voltage level of the corresponding output. The voltage controls are 10 turn potentiometers. Turn-on Checkout Procedure The following steps describe the use of the Model E3620A front panel controls illustrated in Figure 1-2 and serve as a brief check that the supply is operational. -
Page 22: Operation
Operation The dual outputs of the E3620A can be used individually, in series, or in parallel. Each output can be floated (up to 240 volts off ground) or, the + or - terminal of either output can be grounded to the chassis ground terminal which is located on the supply's front panel. - Page 23 V2) must be adjusted in order to obtain the total output voltage. Diodes connected internally across each output protect the supply's output filter capacitors against reverse voltages. This could occur if the supplies are connected in series and the output is shorted. Keysight E3620A Operating and Service Manual...
- Page 24 The constant voltage source will deliver only that fraction of its rated output current necessary to fulfill the total current demand. Keysight E3620A Operating and Service Manual...
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Page 25: Load Considerations
To avoid these effects, it is necessary to preload the supply with a dummy load resistor so that the supply delivers current through the entire operating cycle of the load devices. Keysight E3620A Operating and Service Manual... -
Page 26: Output Capacitance
A high-current pulse may damage load components before the average output current is large enough to cause the current limiting circuit to operate. Keysight E3620A Operating and Service Manual... -
Page 27: Reverse Voltage Protection
Since series regulator transistors cannot withstand reverse voltage either, diodes are also connected across them. When operating supplies in parallel, these diodes protect an unenergized supply that is in parallel with an energized supply. Keysight E3620A Operating and Service Manual... -
Page 28: Service Information
Proceed as follows: 1 Perform turn-on checkout procedure given in page 2 Perform the load regulation performance tests given in the following paragraphs. Keysight E3620A Operating and Service Manual... - Page 29 2 Check the rating of the installed fuse and replace it with the correct value, if necessary. For Option OE3, use a slow-blow 1 amp fuse. For standard and Option OE9, use a slow-blow 2 amp fuse. Keysight E3620A Operating and Service Manual...
- Page 30 3 Mark the instrument clearly with a tag or label indicating the correct line voltage to be used. Figure 1-4 Line Voltage Selector (set for 115 VAC) Keysight E3620A Operating and Service Manual...
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Page 31: Performance Tests
For example, a supply rated at 25 volts and 1 amp would require a load resistance of 25W at the rated output voltage. The wattage rating of this resistor would have to be at least 25 watts. Keysight E3620A Operating and Service Manual... - Page 32 The load current through a shunt must be fed from the extremes of the wire leading to the resistor while the sampling connections are made as close as possible to the resistance portion itself. Keysight E3620A Operating and Service Manual...
- Page 33 3 Set V1 VOLTAGE control clockwise until front panel voltmeter indicates 25.0 volts. 4 DVM should indicate 25 volts ±(0.5% + 2 counts) (24.675 V to 25.325 V). 5 Repeat steps 1 through 4 for the V2 supply. Keysight E3620A Operating and Service Manual...
- Page 34 V1 supply's + and - output terminals. Substitute a short for R and leave the load switch open. 13 Push the V1 METER switch in and adjust the V1 VOLTAGE control fully clockwise. Keysight E3620A Operating and Service Manual...
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Page 35: Load Regulation (Load Effect)
4 Operate the electronic load in open (input off) mode and recheck the DVM indication immediately. The readings’ difference during the immediate change should be within 0.01% plus 2 mV of the reading in step (3). 5 Repeat steps (1) through (4) for the V2 supply. Keysight E3620A Operating and Service Manual... -
Page 36: Line Regulation (Source Effect)
25.0 volts, then input on the electronic load. Record the DVM indication. 5 Adjust the autotransformer for high line voltage input (+10% of nominal voltage) and recheck the DVM indication immediately. The readings’ difference Keysight E3620A Operating and Service Manual... - Page 37 3 Adjust the output of the V1 supply to 25.0 volts. 4 Check that the rms noise voltage at the true rms voltmeter is less than 0.35 5 e.Repeat steps (1) through (4) for the V2 supply. Keysight E3620A Operating and Service Manual...
- Page 38 3 Adjust the output of the V1 supply to 25.0 volts. 4 Set the oscilloscope to AC mode and bandwidth to 20 MHz. 5 Check that the peak-to-peak noise is less than 1.5 mV. 6 Repeat steps (1) through (4) for the V2 supply. Keysight E3620A Operating and Service Manual...
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Page 39: Load Transient Response Time
1 kHz rate with 50% duty cycle. 5 Set the oscilloscope for AC coupling, internal sync and lock on either the positive or negative load transient. 6 Adjust the oscilloscope to display transients as shown in Figure 1-10. Keysight E3620A Operating and Service Manual... -
Page 40: Stability (Drift)
6 The output voltage reading should deviate less than 0.1% plus 5 mV from the reading obtained in step (5) over a period of 8 hours. 7 Repeat steps (1) through (6) for the V2 supply. Keysight E3620A Operating and Service Manual... -
Page 41: Troubleshooting
"Performance Tests" paragraph. Before applying power to the supply, make certain that its line voltage CAUTION selector switch (S1) is set for the line voltage to be used. Keysight E3620A Operating and Service Manual... -
Page 42: Adjustment And Calibration
4 To calibrate the voltmeter for V2 output, push V2 METER switch in and connect DVM across V2 + and —output terminal. 5 Set the output voltage to 15.00 V and then adjust R81 on the main board until front panel VOLTS display reads exactly DVM value. Keysight E3620A Operating and Service Manual... - Page 43 4 To calibrate the ammeter for V2 output, repeat step (1) to the V2 supply. Select V2 METER switch and turn V2 VOLTAGE control fully clockwise. 5 Adjust R80 on the main board until front panel AMPS display reads exactly DVM value divided by R Keysight E3620A Operating and Service Manual...
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Page 45: Component Locator Diagrams
Keysight E3620A Dual Output Power Supply Operating and Service Manual Component Locator Diagrams Main Board — Top... -
Page 46: Main Board - Bottom
Main Board — Bottom Keysight E3620A Operating and Service Manual... -
Page 47: Display Controller - Top
Display Controller — Top Keysight E3620A Operating and Service Manual... -
Page 48: Display Controller - Bottom
Display Controller — Bottom Keysight E3620A Operating and Service Manual... -
Page 49: 7-Segment - Top
7-Segment — Top Keysight E3620A Operating and Service Manual... -
Page 50: 7-Segment - Bottom
7-Segment — Bottom Keysight E3620A Operating and Service Manual... - Page 51 This information is subject to change without notice. Always refer to the Keysight website for the latest revision. © Keysight Technologies 2002 - 2018 Edition 12, December 1, 2018 Printed in Malaysia *E3620-90001* E3620-90001 www.keysight.com...