AMETEK CW User Manual

CW-P SERIES

PROGRAMMABLE

AC POWER SOURCE

Programming Manual

March 2011 Document No. M161691-03 Rev E

This manual covers models:

CW 801P
CW 1251P
CW 2501P

Contact Information

Telephone: [phone] (toll free in North America)
858 450 0085 (direct)
Fax: [phone]
Email:
Domestic Sales: [e-mail]
International Sales: [e-mail]
Customer Service: [e-mail]

Web: www.programmablepower.com

Contents Elgar CW-P Series

CONTENTS

SECTION 1 SCPI CONFORMANCE INFORMATION ........................... 1-1

1.1 Introduction ........................................................................................... 1-1

1.2 Parameter Definitions ........................................................................... 1-1

1.3 Units ...................................................................................................... 1-1

1.4 Conventions .......................................................................................... 1-2

1.5 Queries ................................................................................................. 1-2

SECTION 2 POWER-ON AND RESET CONDITIONS .......................... 2-1

2.1 Factory Defaults .................................................................................... 2-1

2.2 Power-On Conditions ............................................................................ 2-1

2.3 Reset Conditions ................................................................................... 2-2

2.4 Changing Voltage Ranges Via Command Interface ............................. 2-2

2.5 Changing Ranges During Recall Via Command Interface .................... 2-2

SECTION 3 SCPI COMMANDS ........................................................... 3-1

3.1 Miscellaneous Commands .................................................................... 3-1

3.2 MEASURE Commands ......................................................................... 3-1

3.3 OUTPUT Commands ............................................................................ 3-2

3.4 SOURCE Commands ........................................................................... 3-2

3.5 STATUS Commands ............................................................................ 3-4

3.6 SYSTEM Commands ............................................................................ 3-4

3.7 Master/Slave Commands ...................................................................... 3-5

3.8 Common Commands ............................................................................ 3-6

Programming Manual i

Elgar CW-P Series Contents

SECTION 4 RS-232 INTERFACE ......................................................... 4-1

4.1 RS-232 Interface Operation ................................................................. 4-1

4.2 RS-232 Characteristics ......................................................................... 4-1

4.3 RS-232 Connector ................................................................................ 4-2

APPENDIX A: STATUS REGISTER DEFINITIONS ........................... A-1

A.1 Status Byte ........................................................................................... A-1

A.2 Standard Event Status Register ........................................................... A-2

A.3 Operation Status/Questionable Status Registers ................................ A-3

A.4 Error/Event Queue .............................................................................. A-3

A.5 Serial Poll Operation............................................................................. A-3

APPENDIX B: ERROR CODES ............................................................ B-1

B.1 Error Codes Returned by SYSTem:ERRor? Query .............................. B-1

B.2 SCPI Error Codes ................................................................................. B-1

APPENDIX C: SAMPLE PROGRAMS .................................................. C-1

ii Programming Manual

Type

Valid Arguments

<boolean>

ON, OFF, 0, or 1, HIgh, LOw

<value>

Integer or Floating point number

<name>

String enclosed by single or double quotes

Type of Unit

Valid Suffix

Voltage

“Volts” or “V”

Current

“Amps” or “A”

Frequency

“Hz”

Time

“ms” (milliseconds), “s” (seconds), or “min” (minutes)

SECTION 1

SCPI CONFORMANCE INFORMATION

1.1 Introduction

This manual provides programming information for Elgar‟s ContinuousWave™ series

programmable AC power sources. This manual is to be used in conjunction with the
CW-P Series Programmable AC Power Source Operation Manual (Elgar Document
No. M161691-01).

The CW-P Series power sources conform to all specifications for devices as defined in
IEEE 488.2, and comply with SCPI command syntax version 1995.0.

1.2 Parameter Definitions

1.3 Units

The CW Series accepts the following units as suffixes to numeric values:

Programming Manual 1-1

SCPI Conformance Information Elgar CW-P Series

1.4 Conventions

Commands enclosed by “[ ]” are optional.
For example, SOURce:VOLTage:LEVel:IMMediate:AMPLitude 120.0

can be written as, SOURce:VOLTage 120.0.

1.5 Queries

The query syntax is identical to the command syntax, with a ”?” appended.
For example, to query the programmed voltage on phase A, send the string:

SOURce:VOLTage?

A subsequent device read will return a value such as “120.00”. All queries are

terminated with a carriage return and line feed (0x0D 0x0A) for those GPIB controllers
that require termination characters. When the CW unit has nothing to report, its output
buffer will contain three ASCII characters: space, carriage return, and linefeed (in
decimal these values are <32><13><10>).

1-2 Programming Manual

GPIB Address:

25

RS-232 Baud Rate:

9600

RS-232 Data Bits:

8

RS-232 Stop Bits:

1

RS-232 Parity:

N

SECTION 2

POWER-ON AND RESET CONDITIONS

The following sections define the factory and reset power-on conditions of the unit.

2.1 Factory Defaults

When the CW-P unit is first powered up, the following factory defaults will be in place:

2.2 Power-On Conditions

When the CW-P unit is first powered up, the system reads in the configuration that was
last saved to memory position 0. The specific system items in Save and Recall are:

VoltsA, VoltsB, VoltsC (B and C for multi-unit configuration)
Voltage Range, either High or Low
Current Protection Type, either Fold or Shut
Current Shutdown Time
Current LimitA, Current LimitB, Current LimitC (B and C for multi-unit configuration)
Frequency
Phase AngleAB
Phase AngleAC
External Input Assignment, either Analog In or Pulse Out.

Programming Manual 2-1