Part Number: E3646-90001 January 2000.
For Safety information, Warranties, and Regulatory information, see the pages behind the Index.
© Copyright Agilent Technologies 2000 All Rights Reserved.
Agilent E364xA Dual Output DC Power Supplies
The Agilent Technologies E3646A/E3647A (30 watt) and E3648A/E3649A (50 watt) are high performance dual-output dual range programmable DC power supplies with GPIB and RS-232 interfaces. The combination of benchtop and system features in these power supplies provides versatile solutions for your design and test requirements.
Dual-output dual range
Output on/off
High accuracy and high resolution
Excellent load and line regulation
Low ripple and noise
Overvoltage protection
Five Operating states storage
Tracking operation
Easy-to-use controls
Remote voltage sensing
Front and Rear output terminals
Portable, ruggedized case with non-skid feet
Error messages available on the display
GPIB (IEEE-488) and RS-232 interfaces are standard
SCPI (Standard Commands for Programmable Instruments) compatibility
I/O setup easily done from front-panel
Software calibration, no internal physical adjustments
Agilent Technologies E364xA Dual Output DC Power Supplies
The Front Panel at a Glance
| 1Output1 selection Key | 9Knob |
|---|---|
| 2Output2 selection Key | 10Output On / Off Key |
| 3Low voltage range selection Key | 11I/O Configuration Menu / Secure Key |
| 4High voltage range selection Key | 12View Menu / Calibrate Key |
| 5Overvoltage protection Key | 13State Storage Menu / Local Key |
| 6Display limit Key | 14Stored state Recall/Reset Menu |
| 7Resolution selection Keys | 15Tracking enabling/disabling Key |
| 8Voltage / Current adjust selection Key |
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This section gives an overview of the front-panel keys/menus. The menus are designed to automatically guide you through all parameters required to configure a particular function or operation.
1 Output1 selection key Select the output1 voltage and current to be controlled and monitored on the display.
2 Output2 selection key Select the output2 voltage and current to be controlled and monitored on the display.
3 Low voltage range selection key Selects the low voltage range and allows its full rated output to the output terminals.
4 High voltage range selection key Selects the high voltage range and allows its full rated output to the output terminals.
5 Overvoltage protection key Enables or disables the overvoltage protection function, sets trip voltage level, and clears the overvoltage condition.
6 Display limit key Shows voltage and current limit values on the display and allows the knob adjustment for setting limit values.
7 Resolution selection keys Move the flashing digit to the right or left. Adjust the scrolling speed of the text being displayed in the View menu.
8 Voltage/Current adjust selection key Selects the knob control function for voltage or current adjustment.
9 Knob Increases or decreases the value of the flashing digit by turning clockwise or counter clockwise.
10 Output On/Off key Enables or disables the power supply output. This key toggles between on and off.
11 I/O Configuration / Secure key3 Configures the power supply for remote interfaces / or secures or unsecures the power supply for calibration.
12 View menu / Calibrate key2 Views the error codes and the text of the error message, calibration string, and system firmware revision / or enables calibration mode.
13 State storage menu / Local key1 Stores up to five power supply’s states and assigns a name to each of the storage locations / or returns the power supply to local mode from remote interface mode.
14 Stored state Recall menu Recalls a stored operating state from location ‘‘1’’ through ‘‘5’’ and resets the power supply to the power-on state (*RST command).
15 Tracking enabling/disabling key Enable / disable the track mode of the outputs.
1The key can be used as the ‘‘Local’’ key when the power supply is in the remote interface mode.
2You can enable the ‘‘calibration mode’’ by holding down this key when you turn on the power supply.
3You can use it as the ‘‘Secure’’ or ‘‘Unsecure’’ key when the power supply is in the calibration mode.
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You can set the voltage and current limit values from the front panel using the following method.
Use the voltage/current adjust selection key, the resolution selection keys, and the control knob to change the voltage and current limit values.
1 Low
Or + Or +
2 High
1 Select the desired output and voltage range using the output selection keys and voltage range selection keys after turning on the power supply.
2 Press DisplayLimit key to show the limit values on the display.
3 Move the blinking digit to the appropriate position using the resolution selection keys and change the blinking digit value to the desired voltage limit Display
by turning the control knob. If the display limit times out, press Limit key again.
Voltage
4 Set the knob to current control mode by pressing Current key.
5 Move the blinking digit to the appropriate position using the resolution selection keys and change the blinking digit value to the desired current limit by turning the control knob.
6 Press OutputOn/Off key to enable the output. After about 5 seconds, the display will go to output monitoring mode automatically to display the voltage and current at the output.
N o t e All front panel keys and controls can be disabled with remote interface commands. The power supply must be in "Local" mode for the front panel keys and controls to function.
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| Adrs | Power supply is addressed to listen or talk over a remote interface. |
|---|---|
| Rmt | Power supply is in remote interface mode. |
| 8V*/35V** | Shows the low voltage range is selected. |
| 20V*/60** | Shows the high voltage range is selected. |
| OUT1 | The output1 is selected for front-panel or remote operation. |
| OUT2 | The output2 is selected for front-panel or remote operation. |
| OVP1 | The output1 overvoltage protection function is enabled when the OVP1annunciator turns on or the overvoltage protection circuit has caused the power supply to shutdown when the annunciator blinks. |
| OVP2 | The output2 overvoltage protection function is enabled when the OVP2annunciator turns on or the overvoltage protection circuit has caused the power supply to shutdown when the annunciator blinks. |
| CAL | The power supply is in calibration mode. |
| Limit | The display shows the limit values of voltage and current. |
| ERROR | Hardware or remote interface command errors are detected and the error bit has not been cleared. |
| OFF | The output of the power supply is disabled (See page 56 for more information). |
| Unreg | The output of the power supply is unregulated (output is neither CV nor CC). |
| CV | The power supply is in constant voltage mode. |
| CC | The power supply is in constant current mode. |
| TRACK | The output1 and output2 are in track mode. |
Display To review the display annunciators, hold down Limit key as you turn on the power supply.
*For E3646A/48A models. **For E3647A/49A models.
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The Rear Panel at a Glance
1 AC inlet
2 Power-line fuse-holder assembly 3 Power-line module
5 Output 2 Rear output terminals 6 GPIB (IEEE-488) interface connector 7 RS-232 interface connector
Select the GPIB or RS-232 interface (see chapter 3).
Set the GPIB address (see chapter 3).
Set the RS-232 baud rate and parity (see chapter 3).
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Quick Start Chapter 1 helps you get familiar with a few of the power supply’s the front panel feature.
General Information Chapter 2 contains a general description of your power supply. This chapter also provides instructions for installation of your power supply and the output connections.
Front-Panel Operation Chapter 3 describes in detail the use of front-panel keys and how they are used to operate the power supply from the front panel. This chapter also shows how to configure the power supply for the remote interface and gives a brief introduction to the calibration features.
Remote Interface Reference Chapter 4 contains reference information to help you program the power supply over the remote interface. This chapter also explains how to program for status reporting.
Error Messages Chapter 5 lists the error messages that may appear as you are working with the power supply. Each listing contains information to help you diagnose and solve the problem.
Application Programs Chapter 6 contains some remote interface applications to help you develop programs for your application.
Tutorial Chapter 7 describes basic operation of linear power supplies and gives specific details on the operation and use of your power supply.
Specifications Chapter 8 lists the power supply’s specifications.
Service Information Contains guidelines to return your power supply to Agilent Technologies for servicing, procedures for verification & calibration, and replaceable parts list and component locator diagram & schematics.
If you have questions relating to the operation of the power supply, call 1-800-452-4844 in the United States, or contact your nearest Agilent Technologies Sales Office.
If your power supply fails within three years of purchase, Agilent will repair or replace it free of charge. Call 1-800-258-5165 ("Express Exchange") in the United States, or contact your nearest Agilent Technologies Sales Office.
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| Chapter 1 Quick Start |
|---|
| Preliminary Checkout- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 17 |
| Output Checkout- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 18 |
| Voltage Output Checkout - - - - - - - - - - - - - - - - - - - - - - - - - - - - 18 |
| Current Output Checkout - - - - - - - - - - - - - - - - - - - - - - - - - - - - 19 |
| If the Power Supply Does Not Turn On - - - - - - - - - - - - - - - - - - - - 20 |
| Line Voltage Conversion- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 21 |
| To Rack Mount the Instrument - - - - - - - - - - - - - - - - - - - - - - - - - - 23 |
| Chapter 2 General Information |
| Safety Considerations- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 27 |
| Safety and EMC Requirements - - - - - - - - - - - - - - - - - - - - - - - - 27 |
| Options and Accessories - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 28 |
| Options- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 28 |
| Accessories - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 28 |
| Description - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 29 |
| Installation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 31 |
| Initial Inspection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 31 |
| Cooling and Location - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 31 |
| Output Connections - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 32 |
| Current Ratings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 32 |
| Voltage Drops - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 33 |
| Load Consideration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 33 |
| Remote Voltage Sensing Connections - - - - - - - - - - - - - - - - - - 34 |
| Multiple Loads - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 36 |
| Chapter 3 Front-Panel Operation and Features |
| Front-Panel Operation Overview - - - - - - - - - - - - - - - - - - - - - - - - - 39 |
| Constant Voltage Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 40 |
| Constant Current Operation- - - - - - - - - - - - - - - - - - - - - - - - - - - - - 42 |
| Tracking Operation- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 44 |
| View Menu Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 45 |
| Changing Display Mode- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 45 |
| Viewing the Errors- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 46 |
| Viewing the Firmware Revision - - - - - - - - - - - - - - - - - - - - - - - 46 |
| Viewing the Calibration String - - - - - - - - - - - - - - - - - - - - - - - - 47 |
| Configuring the Remote Interface - - - - - - - - - - - - - - - - - - - - - - - - 48 |
| GPIB Configuration- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 48 |
| RS-232 Configuration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 49 |
| Storing and Recalling Operating States - - - - - - - - - - - - - - - - - - - - 50 |
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