B+K precision 9801 Owner's manual

Model: 9801

Programmable AC Power Source

PROGRAMMING MANUAL

Table of Contents

1Remote Operation........................................................................................4

1.1 Interface Connection........................................................................................................4

RS-232.....................................................................................................................................4

USBTMC...................................................................................................................................4

2Remote Commands......................................................................................5

2.1 Parameter Definitions......................................................................................................5

2.2 IEEE488.2 Common Commands.......................................................................................5

2.3 STATUS Subsystem............................................................................................................ 8

2.4 SYSTEM Subsystem.........................................................................................................12

2.5 TRIGGER Subsystem .......................................................................................................15

2.6 SOURCE Subsystem ........................................................................................................ 15

2.7 CONFIG Commands........................................................................................................16

2.8 MEASURE and FETCH Commands..................................................................................19

2.9 LIST Commands..............................................................................................................22

2.10 SWEEP Commands......................................................................................................25

1Remote Operation

1.1 Interface Connection

RS-232

For RS-232 connectivity, refer to the diagram below for pin out information. The RS-232 is

labeled in the rear panel and it is a female DB-9 interface.

Description

Transmit Data

Receive Data

GND

A straight pin-to-pin DB9 female to DB9 male serial cable is required for using the RS-232

interface. Do not use a null modem or crossover DB9 serial cable.

Refer to the user manual for details on configuring all serial settings as required for RS-232

communication.

USBTMC

The standard USB port is a USBTMC-compliant port that can beused for remote communication.

There are no settings in the menu system for USBconfiguration. The only requirement is that

NI-VISA is installed on the computer, which can be downloaded at http://www.ni.com/visa/.

2Remote Commands

2.1 Parameter Definitions

The 9800 Series power supplies support communication protocols, which include standard SCPI

commands and a few proprietary commands that follow the SCPI convention. The SCPI interface

enables users to operate the power supply through a computer or a terminal equipped with RS-232,

or USB interface. SCPI IEEE-488.2 also supports multi-unit control allowing a user to control up to 32

power supplies.

The following table lists all of the numerical parameters.

Symbol

Response Formats

<bool>

Boolean value, can be 1 or “ON”,0 or “OFF”

<NR1>

Integer value, can be zero, positive or negative integer

number

<NRf>

Flexible numerical value,can be zero, positive or negative

float point numericvalue

String value, characters enclosed in single or double

<NL>

New line, hex code 0x0Ah

<Rtn>

Return, hex code 0x0Dh

All commands should be ended with the <Rtn> and <NL> and there should be a space between

command and numerical parameter.

2.2 IEEE488.2 Common Commands

Here’s a list and description of all common SCPI commands supportedby the instrument.

*CLS

This command clears the following registers.

Standard event register

Query event register

Operation event register

Status byte register

Error code

Command syntax: *CLS

Parameter: None

*ESE

This command can set the parameter of standard event enable register. Setting parameter can

determine which bit of standard event register is 1 and the byte will enable ESB of status byte

Command syntax: *ESE <NR1>

Parameter: 0~255

The value when power on: Refer to *PSC command

Example: *ESE 128

Query syntax: *ESE?

Returned parameter: <NR1>

The bit definition of thestandard event enabled register:

Bit

Position

Bit Name

PON

Not

used

CME

EXE

DDE

QYE

Not

used

OPC

Bit Weight

128

PON Power-on

CME Command error

EXE Execution error

DDE Device-dependent error

QYE Query error

OPC Operation complete

*ESR?

This command can read the value of standard event statusregister. After executing this

command, standard event status register is reset. Bit definition of standard event status register

is the same as the standard event status enable register.

Query syntax: *ESR?

Parameter: None

Returned parameter: <NR1>

*IDN?

This command can read information about power supply. The returns parameter contains 4

segments divided by comma.

Query syntax: *IDN?

Parameter: None

Returned parameter: <AARD> segment description

B&K Precision Manufacturer

9801 Product model

XXXXXX Product serial number

VX．XX –VX．XX Software version

Example: B&K Precision, 9801, 00000000000004, V1.01-V1.00

*OPC

When all commands before this command are executed, bit OPC in standard event register will

be set to 1.

Command syntax: *OPC

Parameter: None

Query syntax: *OPC?

Returned parameter: <NR1>

*RST

This command resets the power supply to default settings.

Command syntax: *RST

Parameter: None

*SRE

This command can set the parameter of state byte enable register. Setting parameter can

determine which byte value of state byte register is 1 and the byte will set RQS of state byte

Command syntax: *SRE <NR1>

Parameter: 0~255

Query syntax: *SRE?

Returned parameter: <NR1>

*STB?

This command can read the data from statusbyte register.

Query syntax: *STB?

Parameter: None

Returned parameter: <NR1>

*TRG

When power supply trigger source is a command from via BUS, this command will give atrigger

signal. And its function isthe same as “TRIGger” command.

Query syntax: *TRG

Parameter: None

Returned parameter: None

*SAV

This command can save the current setups ofpower supplyto specified memory. The memory

is divided into 10 groups, each contain 0~9 (10 total) setups. Up to 100 setups can be saved in

total.

Command syntax: *SAV<NRf>

Parameter: 0~9

*RCL

This command can recall thesetups you saved previously from the specified memory location.

Command syntax: *RCL<NRf>

Parameter: 0~9

2.3 STATUS Subsystem

You can get the current status of the power supply by reading the operation status registers. The

power supply records the different status of the instrument through the four status register

group. The four status register groups are: status byte register, standard event register, query

status register and operation status register. Status byte register records the information of the

other status registers.

STATUS Subsystem

STATus:QUEStionable[:EVENt]?

This command can be used to read the value in query event register. After executing this

command, the query event register will be cleared.

Query syntax: STATus:QUEStionable[:EVENt]?

Parameter: None

Returned parameter: <NR1>

Relative command: STATus:QUEStionable:ENABle

The bit definition of query event enable register:

Bit

Position

Bit Name

Not

used

Not

used

Not

used

OCrms

OC Peak

Bit Weight

STATus:QUEStionable:CONDition?

This command is used to read thevalue of query condition register. When a bit of QUES

condition changes, the bit value corresponding in QUEST event register is 1.

Query syntax：STATus:QUEStionable: CONDition?

Parameter: None

Returned parameter: <NR1>

STATus:QUEStionable:ENABle

This command can set the parameter of quest event enable register. Setting parameter can

determine which bitvalue of quest event register is 1 and the bit will enable QUES.

Command syntax：STATus:QUEStionable:ENABle <NR2>

Parameter: 0~65535

Default set: Refer to *PSC command

Example: STATus:QUEStionable:ENABle 128

Query syntax: STATus:QUEStionable:ENABle?

Returned parameter: <NR1>

STATus: QUEStionable:NTRansition

This command is used to edit the negative transition trigger register of operation event.The

parameter determines which bits of operation event register is1 and will change the OPER of

status byte register to be 1.

Command syntax: STATus: QUEStionable:NTRansition <NR1>

Parameter: 0~255

Example: STATus: QUEStionable:NTRansition 128

Query syntax: STATus: QUEStionable:NTRansition?

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