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A620028
Chroma A620028 User Manual
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Theory of Oper
ation
6-3
Figure
6-4
shows the digital stage structure.
Figure
6-4
6.2
Functio
n Descr
iption
6.2.1
I/P (PFC
) Sta
ge
1.
The input stage is
a bri
dge r
ec
tif
ie
r
that rect
ifies
the 3
-
phase
AC
power source to DC.
2.
Th
e
input stage inhibits inrush current
by
connect
ing
the input circuit
through
a 40
Ω
resistor in series during pow
er
-
on to charge the input capacitor
. It
then t
urn
s
on an
SCR
after a few seconds and
bypass
es
this c
urrent limit
resistor.
FPGA
DSP
Memory
Linear
Regulator
+1.26VD
+3.3VD
+5VD
DGND
Isolated APG
Keyboard
K Board
U Board
RS232/RS485
USB,System BUS
G Board
GPIB
Ethernet
Z Board
Fan signal
A Board
AC_Fault signal
C Board
F Board
Driver signal
SCR driver signal
+1.2VD
D Board
222
224
Table of Contents
Default Chapter
19
Table of Contents
19
1 Overview
23
Introduction
23
System Functions
23
Operating Modes
23
Protection
23
Output/Indication
24
Input Control Signals
24
Measuring & Editing
24
Specifications
24
Other Specifications
26
Function Keys
32
Front Panel
32
Rear Panel
34
2 Installation
37
Checking the Package
37
Maintenance & Cleaning
38
Preparation for Use
38
Normal Environment Conditions
39
Input Power Requirements
39
Ratings
39
Input Connections
39
Remote Sensing
41
Correct Connection
41
Reverse Connection of Remote Sensing Wire Polarity
43
Output Connection
43
Rear Panel Output
43
Connecting Wire Specifications
45
Parallel Capacitance Specifications
46
Installing the Handle (62150H for Example)
46
Power-On Procedure
47
3 Manual Operation
49
Introduction
49
Setting Voltage & Current
49
Setting Configuration
50
System Setup
53
Apg
53
Buzzer
58
Power on Status
58
Output Setup
60
Voltage Limit Setting
61
Current Limit Setting
62
Voltage Slew Rate
63
Current Slew Rate Setting
64
Setting DC_ON
65
Setting IV CURVE Parameters
66
Series/Parallel
69
Connecting Series/Parallel Output Cables
70
Assembling Series/Parallel Communication Interface
70
Setting Series/Parallel Operation Mode
73
Setting Series Parameters
78
Setting Parallel Parameters
80
Setting Procedure for APG in Series or Parallel
82
Display
84
Brightness
84
Display Selection
85
Reading Average Times
87
Protection
88
OVP Protection
88
OCP Protection
89
OPP Protection
90
Remote Inhibit
91
Safety Int.lock
93
External On/Off
95
Foldback
96
Otp
98
Ac Fault
99
3.3.5.10 SENSE FAULT Protection
99
3.3.5.11 FANLOCK Protection
100
3.3.5.12 D/D FAULT Protection
101
3.3.5.13 CURR. SHARING ERR Protection
101
3.3.5.14 FPGA UPDATE! Protection
102
3.3.5.15 C/S CABLE ERR. Protection
103
3.3.5.16 MATCH Warning
104
Factory Setting
104
Calibration
106
Voltage Output & Measurement Calibration
108
Current Measurement Calibration
110
Current Output (PROG.) Calibration
113
APG Voltage Calibration
117
APG Current Calibration
120
Voltage Output & Measurement Calibration (62020H-150S Only)
122
Current Calibration (62020H-150S Only)
125
Remote Setup
128
Gpib Address
128
Ethernet
128
Rs232/Rs485
130
Baudrate
131
Rs485 Addr
131
Rs485 Terminator
132
Rs485 Parser
132
Output Mode
133
CV/CC Mode
134
Sas Mode
136
En50530 Mode
140
Sandia Mode
141
Error Message
143
4 Program Sequence
145
List Mode
145
Description of PROGRAM Settings
146
Setting EXT._TRIG PULL
147
Setting PROG no
147
Setting RUN COUNT
147
Setting PROG CHAIN
149
Setting CLEAR PROGRAM
152
Setting Sequence
153
Setting Sequence Number
154
Setting Sequence Type
154
Setting Time
158
Setting Voltage
158
4.1.2.5 Setting Voltage Slew Rate
158
Setting Current
158
Setting Current Slew Rate
159
Execution in LIST MODE
159
Running LIST MODE
159
Program List Mode Description
160
V_Step Mode
160
Setting END_VOLTAGE
162
Setting RUN_TIME
162
Execution of V_STEP MODE
163
Running V_STEP MODE
163
IV Program
164
Setting IV-PROGRAM
165
Setting IV-Sequence
166
Setting Sequence Number
166
Setting IV-FILE Number
167
Setting Sequence Type
167
Setting Time
168
Execution of IV PROGRAM
169
Running IV PROGRAM
169
IV Program Main Screen
170
5 Remote Operation
171
Overview
171
USB Interface
171
Connecting RS-232C
171
Ethernet Remote Control
173
Selecting the LAN to be Connected
174
Setting IP, Subnet Mask & Gateway
176
Confirming Network Connected Successfully
181
Communicating with the Instrument
183
GPIB Function of 62000H Series
189
Introduction to Programming
189
Conventions
190
Numerical Data Formats
190
Boolean Data Format
190
Character Data Format
190
Basic Definition
191
Command Tree Structure
191
Program Headers
191
Common Command and Query Headers
191
Instrument-Controlled Headers
191
Program Header Separator (:)
191
Program Message
191
Program Message Unit
192
Program Message Unit Separator (;)
192
Program Message Terminator (<PMT>)
192
Traversal of the Command Tree
192
Execution Order
192
DC Power Supply Commands
193
Common Command Syntax
193
Specific Commands for 62000H Series
197
ABORT Subsystem
197
CONFIGURE Subsystem
197
SOURCE Subsystem
203
FETCH Subsystem
206
MEASURE Subsystem
207
PROGRAM Subsystem
207
IV Subsystem
212
SAS Subsystem
216
OUTPUT Subsystem
219
5.6.2.10 SYSTEM Subsystem
220
6 Theory of Operation
221
Overview
221
Function Description
223
I/P (PFC) Stage
223
Auxiliary Power
224
Output Stage
224
Digital Circuit
224
7 ETHERNET Functions (62020H-150S Only)
225
Usage of Web Page
225
Home Page (Index.html)
225
Configuration Page
226
Soft Panel
228
Scpi
229
Remarks
229
62020H-150S ETHERNET Simple Operation
230
ETHERNET SETUP Page
230
Power Indicator & MAC Address Display
231
LAN Configuration Initialize (LCI) Function
231
IP Settings
232
Status Indicator
232
8 Self Test & Troubleshooting
233
Overview
233
Troubleshooting
233
Appendix Aapg & System Status Pin Assignment
235
Appendix B List of Protection Messages
237
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Chroma A620028 Specifications
General
Brand
Chroma
Model
A620028
Category
Power Supply
Language
English
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