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Chapter 2 Quick Start
To Program Overcurrent Protection
38
5 Exit the OCP menu.
The “CHANGED” message is displayed for a second to show that the new OCP trip
level is now in effect. If the OCP settings are not changed, “NO CHANGE” will be
displayed. The power supply will exit the OCP menu and the display will return to
the meter mode. Check that the
OCP annunciator turns on.
Checking OCP Operation
To check OCP operation, raise the output current to near the trip point. Then very
gradually increase the output by turning the knob until the OCP circuit trips. This will
cause the power supply’s output current to drop to zero and the
OCP annunciator to
blink. The “OCP TRIPPED” message also appears on the display.
Clearing the Overcurrent Condition
When the OCP condition occurs (the “OCP TRIPPED” message is shown on the
display), the
OCP annunciator flashes. When it was caused by external voltage sources
such as a battery, disconnect it first. Clear the overcurrent condition by adjusting
output current level or by adjusting OCP trip level.
The following steps show how to clear the overcurrent condition and get back to
normal mode operation. In the following steps, the display will go back to “OCP
TRIPPED” if you let the display time out after about several seconds.
• Adjust output current level
1 Lower the output current level.
Press key and set the knob for current control by pressing key, then
lower the output current level below the OCP trip point.
2 Move to the clear mode.
Press key twice to move to the OCP CLEAR mode. The “OCP ON” message
appears on the display. Turn the knob to the right until the above message appears on
the display.
CHANGED
OCP CLEAR
Over
Current
Display
Limit
Display
Limit
Voltage
Current
Over
Current
Over
Current
- Agilent E3633A and E3634A 1
- DC Power Supplies 1
- The Front Panel at a Glance 3
- Display Annunciators 6
- The Rear Panel at a Glance 7
- In This Book 8
- Contents 9
- Specifications 13
- Performance Specifications 15
- OVP 0.5% + 0.5 V 16
- Supplemental Characteristics 17
- Chapter 1 Specifications 20
- Quick Start 21
- 100 or 115 Vac, 6.3 AT fuse 24
- 230 Vac, 3.15 AT fuse 24
- 100, 115, or 230 Vac 24
- RECALL 1 33
- RECALL 3 33
- LEVEL 22.0 V (E3633A) 34
- LEVEL 55.0 V (E3634A) 34
- Checking OVP Operation 35
- OVP CLEAR 36
- LEVEL 22.0 A (E3633A) 37
- LEVEL 7.5 A (E3634A) 37
- Checking OCP Operation 38
- OCP CLEAR 39
- Chapter 2 Quick Start 42
- Calibration Procedures 43
- Calibration Interval 45
- Test Considerations 46
- Recommended Test Equipment 47
- Self-Test 48
- Setup for Most Tests 49
- Electronic Load 49
- Current-Monitoring Resistor 50
- Programming 50
- Constant Voltage Test Setup 51
- CV annunciator 52
- CV annunciator lights 53
- CV PARD (Ripple and Noise) 54
- Load Transient Response Time 55
- Constant Current Test Setup 56
- Ω current monitoring 57
- CC PARD (Ripple and Noise) 58
- Ω resistor (R 59
- CV Performance Test Record 60
- CC Performance Test Record 60
- Calibration Security Code 61
- 000000 CODE 62
- 003633 CODE (E3633A) 62
- 003634 CODE (E3634A) 62
- UNSECURED 63
- Calibration Count 64
- Calibration Message 64
- Ω across the 65
- CAL SETUP 1 66
- V LO 0.5000 V 66
- V LO 0.4500 V 67
- V MI 10.000 V (E3633A) 67
- V MI 10.001 V 67
- V HI 19.500 V (E3633A) 67
- V HI 19.495 V 68
- CAL SETUP 2 68
- CAL SETUP 3 68
- Calibrate 69
- I HI 19.500 A (E3633A) 70
- I HI 19.499 A 70
- CAL SETUP 4 70
- CAL MODE 71
- Error Messages 73
- Self-Test Error Messages 74
- Calibration Error Messages 75
- End of Program 82
- Theory of Operation 85
- Block Diagram Overview 87
- Block Diagram 88
- AC Input and Bias Supplies 89
- Floating Logic 90
- Serial Clock SERCK XFPSK 91
- Data OUT (send) SERDAT FPDI 91
- Data IN (receive) SERRBK FPDO 91
- D-to-A Converter 92
- A-to-D Converter 93
- Power Mesh and Control 94
- Earth-Referenced Logic 96
- Front Panel 96
- Operating Checklist 99
- Types of Service Available 100
- Repacking for Shipment 101
- Surface Mount Repair 102
- Installation Procedure 103
- Unit is Inoperative 104
- Unit Fails Self-Test 104
- (MY53xx6xxx) 105
- Bias Supplies Problems 105
- Power-On Self-Test 106
- Complete Self-Test 106
- Component Drawings 109
- © 1998–2014 115
- Agilent Technologies 117
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