GW Instek PPH-1503 User manual

Programmable High Precision
DC Power Supply
PPH-1503
User Manual
GW INSTEK PART NO. 82PH-15030EE1
ISO-9001 CERTIFIED MANUFACTURER
北京海洋兴业科技股份有限公司（证券代码：839145） 电话：[phone] 网址：www.hyxyyq.com

Copyright Statement
This manual contains proprietary information, which is protected by
copyright. All rights are reserved. No part of this manual may be
photocopied, reproduced or translated to another language without
prior written consent of Good Will company.
The information in this manual was correct at the time of printing.
However, Good Will continues to improve products and reserves the
rights to change specification, equipment, and maintenance
procedures at any time without notice.
Good Will Instrument Co., Ltd.
No. 7-1, Jhongsing Rd., Tucheng Dist., New Taipei City 236, Taiwan.
北京海洋兴业科技股份有限公司（证券代码：839145） 电话：[phone] 网址：www.hyxyyq.com

TABLE OF CONTENTS
3
Table of Contents
SAFETY INSTRUCTIONS ....................................................5
OVERVIEW ................................................................... 11
Introduction....................................................11
Key Features ...................................................13
Operating Theory ............................................15
Front Panel .....................................................17
Rear Panel.......................................................23
Constant Voltage/Constant Current Crossover
Characteristics ................................................25
GETTING STARTED......................................................... 27
Start Up ..........................................................27
DVM and Load Connection ..............................28
Turning the Output On/Off ..............................29
BASIC OPERATION......................................................... 31
Basic Power Supply Functions..........................31
DVM ...............................................................42
Pulse Current Measurement ............................44
Long Integration Measurement........................51
Current Sink Function......................................56
External Relay Control .....................................58
SWEEP Function ..............................................61
SAVE/RECALL................................................................ 65
Save Settings...................................................65
Recall Settings.................................................66
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PPH-1503 User Manual
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Restore Factory Default Settings ......................69
SYSTEM SETTINGS......................................................... 71
System Information .........................................71
Utilty Settings .................................................72
Updating Firmware.......................................... 74
REMOTE CONTROL ........................................................ 77
Remote Control...............................................77
Command Syntax.............................................87
Command List .................................................91
Command Details ............................................97
SCPI Status Registers SCPI ............................. 134
Errors ........................................................... 143
APPENDIX .................................................................. 147
Replacing the Fuse ........................................ 147
Specifications................................................ 149
Optional Accessories ..................................... 151
Declaration of Conformity ............................. 152
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SAFETY INSTRUCTIONS
5
SAFETY INSTRUCTIONS
This chapter contains important safety instructions
that you must follow during operation and storage.
Read the following before any operation to insure your
safety and to keep the instrument in the best possible
condition.
Safety Symbols
These symbols may appear in the manual or on the instrument.
WARNING
Warning: Identifies conditions or practices that
could result in injury or loss of life.
CAUTION
Caution: Identifies conditions or practices that
could result in damage to the PPH or to other
properties.
DANGER High Voltage
Attention Refer to the Manual
Protective Conductor Terminal
Earth (ground) Terminal
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PPH-1503 User Manual
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Do not dispose electronic equipment as unsorted
municipal waste. Please use a separate collection
facility or contact the supplier from which this
instrument was purchased.
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SAFETY INSTRUCTIONS
7
Safety Guidelines
General Guideline
CAUTION
•Do not place any heavy object on the unit.
•Avoid severe impact or rough handling that
leads to damaging the unit.
•Do not discharge static electricity to the unit.
•Do not block the cooling fan opening.
•Do not perform measurements on circuits that
are directly connected to mains power.
•Do not disassemble the PPH unless you are
qualified.
(Measurement categories) EN 61010-1:2001 specifies the
measurement categories and their requirements as follows. The PPH-
1503 falls under category I.
•Measurement category IV is for measurement performed at the
source of low-voltage installation.
•Measurement category III is for measurement performed in the
building installation.
•Measurement category II is for measurement performed on the
circuits directly connected to the low voltage installation.
•Measurement category I is for measurements performed on
circuits not directly connected to Mains.
Power Supply
WARNING
•AC Input voltage range: 90VAC~264VAC
•Frequency: 50Hz/60Hz
•To avoid electrical shock connect the protective
grounding conductor of the AC power cord to
an earth ground.
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PPH-1503 User Manual
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Fuse
WARNING
•Fuse type: T2.0A/250V
•To prevent fire, replace the fuse only with the
specified type and rating.
•Disconnect the power cord before replacing the
fuse.
•Make sure the cause of fuse blowout is fixed
before replacing the fuse.
Cleaning the
power supply
•Disconnect the power cord before cleaning the
oscilloscope.
•Use a soft cloth dampened in a solution of mild
detergent and water. Do not spray any liquid
into the oscilloscope.
•Do not use chemicals containing harsh products
such as benzene, toluene, xylene, and acetone.
Operation
Environment
•Location: Indoor, no direct sunlight, dust free,
almost non-conductive pollution (Note below)
•Relative Humidity: < 80%
•Altitude: < 2000m
•Temperature: 0°C to 40°C
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SAFETY INSTRUCTIONS
9
(Pollution Degree) EN 61010-1:2001 specifies pollution degrees and
their requirements as follows. The PPH-1503 falls under degree 2.
Pollution refers to “addition of foreign matter, solid, liquid, or gaseous
(ionized gases), that may produce a reduction of dielectric strength or
surface resistivity”.
•Pollution degree 1: No pollution or only dry, non-conductive
pollution occurs. The pollution has no influence.
•Pollution degree 2: Normally only non-conductive pollution
occurs. Occasionally, however, a temporary conductivity caused by
condensation must be expected.
•Pollution degree 3: Conductive pollution occurs, or dry, non-
conductive pollution occurs which becomes conductive due to
condensation which is expected. In such conditions, equipment is
normally protected against exposure to direct sunlight,
precipitation, and full wind pressure, but neither temperature nor
humidity is controlled.
Storage
environment
•Location: Indoor
•Relative Humidity: < 70%
•Temperature: -10°C to 70°C
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PPH-1503 User Manual
10
Power cord for the United Kingdom
When using the power supply in the United Kingdom, make sure the
power cord meets the following safety instructions.
NOTE: This lead/appliance must only be wired by competent persons
WARNING: THIS APPLIANCE MUST BE EARTHED
IMPORTANT: The wires in this lead are coloured in accordance with the following
code:
Green/ Yellow:
Earth
Blue:
Neutral
Brown:
Live (Phase)
As the colours of the wires in main leads may not correspond with the coloured
marking identified in your plug/appliance, proceed as follows:
The wire which is coloured Green & Yellow must be connected to the Earth
terminal marked with either the letter E, the earth symbol or coloured
Green/Green & Yellow.
The wire which is coloured Blue must be connected to the terminal which is
marked with the letter N or coloured Blue or Black.
The wire which is coloured Brown must be connected to the terminal marked
with the letter L or P or coloured Brown or Red.
If in doubt, consult the instructions provided with the equipment or contact the
supplier.
This cable/appliance should be protected by a suitably rated and approved HBC
mains fuse: refer to the rating information on the equipment and/or user
instructions for details. As a guide, a cable of 0.75mm2should be protected by a
3A or 5A fuse. Larger conductors would normally require 13A types, depending
on the connection method used.
Any exposed wiring from a cable, plug or connection that is engaged in a live
socket is extremely hazardous. If a cable or plug is deemed hazardous, turn off
the mains power and remove the cable, any fuses and fuse assemblies. All
hazardous wiring must be immediately destroyed and replaced in accordance to
the above standard.
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OVERVIEW
11
OVERVIEW
This chapter contains a brief introduction to PPH-1503,
the main features, as well as an overview of the front
and rear panel. Use the Getting Started chapter on
page 27 to for start up instructions and how to setup
the appropriate operation environment.
Introduction
Overview
The PPH-1503 is a portable high-speed
programmable DC power supply with flexible
operating configurations. In addition to the basic
power supply functionality, it is also able to
measure pulse current and the average current
over long periods of time.
The PPH-1503 is designed for testing the power
consumption of battery powered wireless
communication devices (e.g. cell phones). Such
devices often have large load variations within a
short time span. The high precision power supply
has excellent voltage stability during pulsed loads
and is capable of simultaneously measuring the
pulse current, even for very short pulses. In
addition, the power supply is able to sink current,
allowing it to simulate the characterics of a
discharged rechargeable battery for testing
chargers and charge control circuits.
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PPH-1503 User Manual
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Basic Power
Supply Function
The PPH-1503 works as a conventional power
supply with automatic CC/CV crossover.
Parameters such as the output voltage, current,
read back refresh rate, data sampling period,
power-on status, OVP and current range can be
configured using the control panel. The voltage
and current settings and the actual voltage/current
are displayed on the LCD. For details, see page 31.
Pulse Current
Measurement
Function
The PPH-1503 can measure the change in
instantaneous current and the current of extremely
short pulses. The readback refresh rate, data
sampling period, trigger delay and trigger level
can be set by the front panel keys and is displayed
on the LCD. For details see page 44.
Current
Measurement
over Long Periods
This function can measure the average current of
one or more pulses. The readback refresh rate,
trigger mode, and trigger timeout and trigger level
settings are controled by the front panel keys and
is displayed on the LCD display. For details, see
page 51.
Current Sink
Features
When the voltage of an external power source is
greater than the high-speed power supply output,
the system will automatically work as an electronic
load to sink current. For details, see page 56.
Digital Volt
Meter
The PPH-1503 has a DVM function that can
measure DC voltages in the range of 0~20VDC. For
details, see page 42.
Remote Control
To meet the various needs of customers, the PPH-
1503 is designed for USB, GPIB and LAN remote
control. For details, see page 77.
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OVERVIEW
13
Additional
Features
The PPH-1503 has external relay control signals for
customers. The relay control signals are synced to
the pulse current measurement feature. For details,
see page 58.
Key Features
Features
•Low noise: Thermostatically controled fan.
•Compact, lightweight.
•3.5 inch TFT display.
Operation
•Constant voltage and constant current operation
(CV/CC).
•Output on/off control.
•Front and Rear output control key.
•Digital panel control.
•5 groups of save/recall settings and 10
automatically generated power-on settings.
•Digital voltage and current settings.
•Software calibration.
•Alarm buzzer.
•Key lock function.
Protection
Features
•Reverse polarity protection.
•Overvoltage and overcurrent protection
(OVP/Trip).
•Overtemperature protection (OTP).
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PPH-1503 User Manual
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Interface
•USB remote control.
•GPIB remote control.
•LAN remote control.
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OVERVIEW
15
Operating Theory
Overview
The PPH-1503 mainly consists of the follow
components:
•AC to DC Switching power supply
•DC to DC Buck converter circuit
•Precision output control circuit
The block diagram below shows a function
description of each of the circuits. The following
page will show detailed decriptions of each
component.
Block Diagram
AC INPUT
AC TO DC
SWITCH POWER
DC TO DC
BUCK CIRCUIT
U201,Q201,Q202
L202
LINEAR
CONTROL
Q306~Q308,U303
ON/OFF SWITCH
Q309,Q310,
Q315,Q316
AUXILIARY
POWER SUPPLY
U101,T101,
Q102~Q105
V-SET
I-SET
AND VOLTAGE
COMPARATOR
U301A
VOLTAGE
SAMPLING
CIRCUIT
U401,U402
CURRENT
COMPARATOR
U301B
CURRENT
SAMPLING
CIRCUIT
U430
SAMPLE
RESISTANCE
R366,R366A
R367,R367A
OUTPUT
Swtiching Power
Supply
AC power is converted to 24VDC by the switch
mode power supply module.
DC Down
Conversion
To reduce the input voltage to 24VDC (slightly
higher than the settable voltage) the U201 Buck IC
is used in conjunction with two power MOSFETS
(Q201/Q202) and an inductor (L202).
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PPH-1503 User Manual
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Linear Output
Circuit (Linear
Regulator)
The Q306, Q307 dividers reduce the heat on a
single component. The U303, U301, U403, U401
and U402 components form a control circuit to
achieve accurate output.
Auxillary Power
Supply
The independent auxillary DC power supply is
achieved with the U101, T101 and Q102~Q105
components.
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OVERVIEW
17
Front Panel
P P H -1 5 0 3
LCD display
Numberpad and
secondary function keys
Arrow keys
DVM inputs
Front panel output
terminals
Function keys
Power button
Display
Voltmeter
Indicators
Displays the output voltage with up to 5 digits of
resolution. The default units are Volts (V).
15.000 v
Ammeter
Indicator
Displays the output current with up to 5 digits of
resolution, depending on the current range (5A/5mA).
The current range is selectable between A and mA.
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PPH-1503 User Manual
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5.0000 A
or
5.0000 mA
Setting
Display
Displays the voltage and current settings.
Parameter
Settings
Display
Displays the parameter settings. For details on setting
parameters, see page 20. The following figure shows the
F1 parameter settings (V AND I), for example.
Status
Display
Display the current status of the instrument.
Status
Output mode
CV mode:
C V
CC mode:
C C
Overvoltage protection
Enabled:
O.V.P
Disabled:
O.V.P
Alarm
Enabled:
BEEP
Disabled:
BEEP
Key lock
CurrRange: 5 A LimMode: Limit
PowOnSetup: RST OutputRelay: One
O.V.P: Off RecallSetup: ---
IntRate: 1.00 PLC AverRead[1][2]: 1
09.200 V
I-Set
5.0000 A
V-Set
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OVERVIEW
19
Locked:
LOCK
Unlocked:
LOCK
Remote connectivity
Local mode:
RMT
Remote:
GPIB
LAN
USB
Output
Switching the Output Source
Front:
FRONT
Rear:
REAR
Output State
On:
ON
Off:
OFF
Function
Display
Displays the unit functions. There four functions:
F1: Basic power supply function (V AND I);
F2: Digital Voltmeter function (DVM);
F3: Pulse current meter function (PULSE);
F4: Long integration current measurement function
The basic power supply function is shown below. (The
active function is shown in yellow.)
Function Keys
Menu key
Menu key to enter or exit from
system settings.
Voltage
Setting key
Press the Voltage key to set the
voltage settings. See page 34 for
operation details.
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PPH-1503 User Manual
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Current
Setting key
Press the Current key to set the
current settings. See page 35 for
operation details.
Front and
Rear output
toggle key
Front and rear output toggle
switch. The key will be lit when
the output is set to the rear
outputs.
Rear panel output:
Output key
The Output key turns the output
on or off. The Output key will
lightup when the output is on.
On:
LOCK key
The Lock key is used to disable all
the panel keys except for the
Output key. Pressing the Lock key
for at least 2 seconds will turn the
panel lock on or off. The Lock key
can also be used to exit from
remote control mode. When the
panel lock is active the Lock key
will light up.
Locked：
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