Hioki 3801-50, 3802-50 Remote Operation Manual

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REMOTE OPERATION MANUAL

3801-50 3802-50

DIGITAL HiTESTER

Contents

Introduction.................................................................................1

Symbols......................................................................................1

Chapter 1 Remote Interface Overview____________________ 3

Chapter 2 Setting Remote Interface Parameters ___________ 5

Chapter 3 Commands Summary ________________________ 7

Chapter 4

Responding Message ________________________ 9 Chapter 5

Instructions of Command Sets________________ 13

5.1 IEEE 488 Common Commands..................................13

5.2 SCPI Commands ........................................................14

Chapter 6 Summary of SCPI Commands ________________ 27

Chapter 7 Remote Program Example Using Visual Basic 6 _ 31

Contents

Introduction

Trademars

Symbols

Introduction

The Section describes how to operate the meter via an optical interface.

• It also explains the detail information of all interface command sets of Standard Commands for Programmable Instruments (SCPI) used in the meter.

• The remote control operation enables the user either to manually operate the meter via a terminal or to execute a host computer program automatically.

Visual Basic is a registered trademark of Microsoft Corporation in the United States and/or other countries.

Safety Symbol

Other symbols

The following symbols in this manual indicate the relative importance of cautions and warnings.

Indicates advisory items related to performance or correct operation of the instrument.



Indicates the reference.

Iterminology explained at the bottom of the word.

Symbols

Chapter 1 Remote Interface Overview

Remote Interface

Overview Chapter 1

Fig. 1 shows a connection between the 3801-50/ 3802-50 and a computer via an optical cable. Either a USB or an RS-232C interface optical cable can be used for communication.

Procedure

1. Connect the cable to the connector or USB port.

RS-232C interface optical cable

USB optical cable

to the 9-pin Type D male connector on the computer.

Connect to the USB port on the computer.

2. Once the USB cable is connected and the USB driver is installed, a

virtual RS-232COM port is created on the computer. (Only when using a USB optical cable)

• The remote interface is a serial binary data interchange, which operates from 2400 to 19200 baud rate.

• The communication port of the 3801-50, 3802-50 is designed in full duplex, which makes the meter more reliable and efficient in data taking.

Cable connection for Communication

When connecting the communication cable to the meter, ensure that the label RS-232C INTERFACE label faces upwards as shown in Fig. 1.

Chapter 1 Remote Interface Overview

Chapter 2 Setting Remote Interface Parameters

Setting Remote Interface

Parameters Chapter 2

In order to operate the meter via a host computer or terminal, the parameters in interface wi thin t he 3801-50, 38 02-50 ha ve to mat ch the parameters in the serial inter face provided by the host or terminal.

The following procedures will guide the user to set up interface parameters within the 3801-50, 3802-50 to comply interface with the host.

The default settings of the meter at factory are 9600-baud rate, nonparity check , 8 data lengths, and 1 stop bit (9600, n, 8, 1).

The following table indicates the factory settings and user selectable communication parameters by using remote interface.

Remote Interface Parameters

Item Parameter

1 2 3 4 5

Baud Rate 9600 2400, 4800, 9600, 19200

parity check None None, Odd or Even

data length 8 7 or 8

response OFF ON or OFF

data output OFF ON or OFF

Factory

Setting

Selectable Parameter

response

With response ON, the meter responsees (returns) all the characters whatever it receives.

data output

• The remote indicator of the 3801-50, 3802-50 is flashing when the meter is set to data output ON.

• If the remote interface of the 3801-50, 3802-50 is under data output mode, the 3801-50, 3802-50 will print out the measured data when the measurement cycle is completed.

• The 3801-50, 3802-50 auto-sends the newest data to a host continuously.

• The 3801-50, 3802-50 doesn't accept any commands under data output mode.

Setup Procedures for Communication Parameter

To ensure the remote interface will operate appropriately, user may need to configure the remote interface parameters on power on option. Please refer to operation procedures of POWER-ON OPTION.

❖3801-50, 3802-50 instruction manual ”Power-On Options”

Chapter 2 Setting Remote Interface Parameters

Chapter 3 Commands Summary

Commands

Summary Chapter 3

Overview of Command Type and Format

• All commands must be entered in the upper case.

• There are two types of the 3801-50, 3802-50 programming commands: IEEE 488 common commands and Standard Commands for Programmable Instruments (SCPI).

• Some commands are device-specific to the 3801-50, 3802-50. They are not included in the version 1999.0 of the SCPI standard. However, these commands are designed with the SCPI format in mind and they follow the syntax rules of th e standard.

Common Command Format

• The IEEE 488 standard defines the common commands as commands that perform functions like reset and system query.

• Common commands usually come with the asterisk "∗" character, and may include parameters. Some examples of Common command like: *IDN?, *RST, *CLS, GTL, LLO.

SCPI Command Format and Query Format

• The SCPI commands control instrument functions.

• A subsystem command has a hierarchical structure that usually consists of a top-level (or root) keyword, one or more lower level keywords, and parameters.

• The following example shows a command and its associated query:

A. CONFigure:VOLTage:DC 0.5: Set the main display to the DC

voltage measurement , and select the 510.00mV range.

B. CONFigure? : Return the function of the main

display measurement.

• CONFigure is a root level keyword with the second level keyword, VOLTage, and 0.5 is the command parameter.

• The query command ends with a question mark "?".

SCPI stems from IEEE488.1 and IEEE 488.2. Although the IEEE

488.2 standard addressed some instrument measurements, it principally dealt wi th common commands and synt ax or data formats. Please refer to the IEEE488.2 and SCPI reference manual for more information.

Chapter 3 Commands Summary

Terminator

A terminator is a character sent by a host, which identif ie s the end of a command string. A valid terminator consists of two-byte data:

<CR> (Carriage Return, ASC(&H0D)) <LF> (Line Feed, ASC(&H0A))

Chapter 4 Responding Message

Responding

Message Chapter 4

Return result

• After the meter executes a query command the return of the result will be in the following format:

• If communication of the meter is under data output mode, the meter will print out the measured data when the measurement cycle is completed. The printed data are only for p ri ma ry display. The format of printed data will be shown as following:

• On the meter warning the return of the prompt will be in the fo llowing format except Xon and Xoff:

Data Types

• Returned message is the ASC II string from the meter responding t o a query.

• A query is a command followed by a question mark.

The following table is explanation for data types.

Data Types of Responding Message and Parameter

Data Type Explanation Example

<NR1>

<NR2>

An integer This numeric

representation has an explicit radix point.

+10000, -10000, 123, -100

+13.234, -.00002, 3.4567

<NR3>

This representation has an explicit radix point and an exponent.

Single ASCII-encoded byte, is return fo r the setting query.

-1.20000000E+02, +9.90000000E+37*

0 or 1,OFF or ON

Chapter 4 Responding Message

Data T ypes of Responding Message and Parameter

Data Type Explanation Example

*: +9.90000000E+37 means positive overload,

-9.90000000E+37 means negative overload.

ASCII-encoded bytes corresponding to the short form of the literal used as the command parameter.

AVER, PEAK

Chapter 4 Responding Message

Prompts

When the meter comes up any system warnings, the meter sends a prompt string to the host through remote interface.

The meter returns one of the prompts as shown on the foll owing table.

Return Prompts

Prompts Description

*L *E *B

*0 *1 *2 *3

*4 *5

Into local mode Remote command's error warning Battery low warning Input warning

• When a test lead is connected to the "A" terminal while the function switch is set to a function other than mA.A

• When the input voltage exceeds 1010 V during voltage measurement

Function switch position: V Function switch position: V Function switch position: mV Function switch position: Ω Function switch position: Function switch position:

*6 *7

ASC(&H11) ASC(&H13)

Function switch position: μA Function switch position: mA.A

Function switch position: (Only 3 801-50) Xon: The meter is available. Xoff: The meter is busy.

• On Model 3802-50, undetermined characters suc h as 「∗」 or 「∗8」 may be returned when the function switch is turned from mA.A to OFF. This occurs when the meter is sending the function switch status at the moment it is switched off. This response should be ignored.

• You can confirm the input warning status from the N and O items returned in response to the STAT? command.

❖ 26p

Chapter 4 Responding Message

Chapter 5 Instructions of Command Sets

Instructions of

Command Sets Chapter 5

5.1 IEEE 488 Common Commands

*CLS

Description Clear the System Error Queue.

*IDN?

Description Query the Meter identification. Response Returns instrument maker name, model number, serial number

and firmware version.

*RST

Description Put the meter to power-on-reset state, but no affect the Output

Queue and interface parameter.

The reset operation is executed for 3 second s at least. Be sure to exe cute other commands then.

LLO

Description Put the meter into the local lockout state when in remote

control. This means no local key operation at the front panel is allowed during remote control.

GTL

Description Put the meter into the local state, clearing the remote state and

front panel lockout.

Chapter 5 Instructions of Command Sets

5.2 SCPI Commands

This subsection describes the SCPI subsystem commands for the meter. The meter only accepts the UPPER CASE part of command. It is unnecessary to send complete command characters.

Some SCPI Symbol Conventions

Text Symbol

[ ]

< >

( )

;

Option: can be omitted Exclusive OR Defined element Comment Question mark Separated two command

keywords Compound commands

Meaning

CONFigure Subsystem:

CONFigure

:CURRent

:DC [<range>] :AC [<range>] :ACDC [<range>]

:PERCent

Description • Set to DC, AC or AC+DC current measurement.

(Only 3801-50: AC+DC) The function switch is at current measuring. When measuring DCmA, select the % conversion. Use the SYST:CPER command to select the 4-20 mA or 0-20 mA scale.

Parameter • If parameter is omitted, the meter is set to auto range.

• Enter the current measurement range to <range>.

Example

The function switch is at μA measuring: 500 500

u(510.00 μA), 5000u(5100.0 μA)

The function switch is at mA.A measuring: 0.05, 0.5, 5 or 10

0.05(51.000 mA), 0.5(510.00 mA), 5(5.1000 A), 10(10.000 A)

CONF:CURR:DC : Set to DC current. CONF:CURR:AC 0.5 : Set to AC current and 510.00 mA

range.

CONF:CURR:PERC : For DCmA measurements, select the

% conversion..

u, 5000u

Chapter 5 Instructions of Command Sets

CONFigure

:VOLTage

:DC [<range>] :AC [<range>] :ACDC [<range>]]

Description Set to DC, AC or AC+DC voltage measurement. (Only 3801-

50: AC+DC) The function switch is at mV measuring or V measuring.

Parameter • If parameter is omitted, the meter is set to auto range.

• Enter the voltage measurement range to <range>: The function switch is at mV me as uring : 0.05 0.5 or 1

0.05(51.000 mV), 0.5(5 10.00 mV), 1(1000.0 m V) The function switch is at V measuring: 5, 50, 500 or 1000 5(5.1000 V), 50(51.000 V), 500(510.00 V), 1000(1000.0 V)

Example

CONF:VOLT:DC : Set to DC voltage measuring. CONF:VOLT:AC 0.5 : Set to AC voltage and 510 mV

range.

CONFigure

:FCOUnter

:PREScale<1 / 100>

Description Select frequency co unte r pres ca li ng. (Onl y 380 1- 50)

The function switch is at

Parameter 1 :Disables frequency counter prescaling (divisor = 1).

100 :Disables frequency counter prescaling (divisor = 100).

Example

CONF:FCOU:PRES 1: Disables frequency counter

prescaling (divisor = 1).

diode measuring. Range is auto range.

CONFigure:FREQuency

Description Frequency measurement can be selected for voltage or current

measurement. The function switch is at voltage or current measuring. The display shows both main and sub displays simultaneously. The frequency range changes when measuring frequency. (Only 3801-50) The function switch is at D(Hz).

Parameter • If parameter is omitted, the meter is set to auto range.

• Enter the resistance measurement range to <range>. (Unit:

Hz)

: 100, 1000, 10K, 100K, 1000K, 10M frequency measurement)

[<range>]

∗, or 100M∗(Only

∗ Only 3801-50 frequency counter measurement.

Example

CONF:FREQ 10k : Set to frequency measuring and 9.9999

kHz range.

Chapter 5 Instructions of Command Sets

CONFigure

:PULSe

:PWIDth [<range>] :NWIDth [<range>] :PDUTycycle :NDUTycycle

Description Set to pulse width measurement, pulse duty measurement.

This can be selected when voltage, current or frequency counter∗ (divisor = 1) measurement is selected.

∗ Only 3801-50

Parameter • If parameter is omitted, the meter is set to auto range.

• Enter the pulse measurement range to <range>:

• Set the parameter to 5 to select the 1999.9 ms range for pulse width measurement. :0.5, 5

0.5(510.00 ms), 5(1999.9 ms)

Example

CONF:PULS:NWID 0.5 :Sets negative pulse width CONF:PULS:NDUT :Measures negative pulse duty.

measurement in the 510.00 ms range.

CONFigure:RESistance [<range>]

Description Set to 2-wire resistance measuring.

The function switch is at resistance measuring.

Parameter • If parameter is omitted, the meter is set to auto range.

• Enter the resistance measurement range to <range>. (Unit:

Example

Ω): 500, 5K, 50K, 500K, 5M, 50M or 500M

∗

Only 3801-50

CONF:RES 50k : Set to resistance measuring and 51.000 kΩ

range.

∗

CONFigure:CONTinuity [<range>]

Description Set to 2-wire resistance measuring with the continuity test.

The function switch is at resistance measuring.

Parameter • If parameter is omitted, the meter is set to auto range.

• Enter the resistance measurement range to <range>.(Unit:

Ω): 500, 5K, 50K, 500K, 5M, 50M or 500M

∗.

∗Only 3801-50

Example

CONF:CONT 500 : Set to resistance measuring with the

continuity test and 510.00 Ω range.

CONFigure:CONDuctance

Description • Set to conductance measuring . The function switch is at

resistance measuring.

Example •

CONF:COND : Set to conductance measuring.

CONFigure:CAPacitance [<range>]

Description Set to capacitance measurement . The function switch is at C

measuring.

Parameter If parameter is omitted, the meter is set to auto range.

Capacitance measurement range to <range>.(Unit: F) : 10n, 100n, 1000n, 10u, 100u, 1000u, 10m or 100m

Example

CONF:CAP 100u: Set to capacitance measurement and

99.99

μF range.

Chapter 5 Instructions of Command Sets

CONFigure:DIODe

Description Set to diode measuring with continuity test.

The function switch is at diode measuring.

CONFigure:TEMPerature <K | J>

Description Set to temperature measuring with continuity test.

（Only 3801-50 : J Termocouple）

The function switch is at C measuring.

Paramete Example CONF:TEMP K: Set to temperature of the K termocouple.

CONFigure? [@2]

Description Query the function of the primary or secondary display. Parameter If parameter is omitted, query the function of the main display. Response Return <"function range,resolution"> format string, the

Example Function Range Resolution

K, J: Termocouple sensor（Type K or J）.

examples are as following:

VOLT +5.000000E-01,+1.000000E-05

CURR:AC +5.000000E-02,+1.000000E-06

VOLT:DBM

CPER:0-20mA +5.000000E-02,+1.000000E-06

percentage disply:

DCV

ACA

dBm

DCmA

0-20mA

FREQ +1.000000E+03,+1.000000E-02

PULS:PWID +5.000000E+00,+1.000000E-04

PULS:NDUT

CAP +1.000000E-08, +1 .000 000 E- 12 C（Capacitance）

RES+5.000000E+07,+1.000000E+03

Frequency

Pulse

width(Positive)

Pulse duty

ratio(Negative)

Resistance）

R（

510.00 mV

51.000 mA

999.99

1999.9

9.999 nF

51.000

Ω

0.01 mV

0.001 mA

0.01 Hz

0.1 ms

0.001 nF

0.01 MΩ

COND+5.000000E-07,+1.000000E-11

CONT +5.000000E+02,+1.000000E-02

DIOD

TEMP:TC K CEL

（Conductance）

Continuous)

R（

Diode

Temperature

K-thermocouple

510.00 nS

510.00

Ω

0.01 nS

0.01 Ω

Chapter 5 Instructions of Command Sets

Example Function Range Resolution

TEMP:ENV CEL

TIME:PRES+1.000000E+05,+1.000000E+00

• If query the sub function and the sub is not set, the meter returns an error prompt to the host.

• The sub display is enabled by sending command. Origina l main function changes to sub display, and the main function is replaced by frequency or pulse function.

Temperature

ambient temperature

Elapsed time of

recording function

CONF:FREQ or CONF:PULS

100000

1 s

Chapter 5 Instructions of Command Sets

CALCulate Subsystem:

CALCulate:FUNCtion NULL

AVERage PEAKhold [,< DC | AC | PERCent >] DBM [,< DC | AC | ACDC >] DBV [,< DC | AC | ACDC >] NONE

Description Set or off the function of the calculation. Parameter NULL - Enables the relative value (REL) display function.

AVER - Recording function PEAK -Peak-hold function DBM -Set to decibel measuring. (dBm)

(Only 3801-50: AC+DC)

DBV -Set to decibel measuring. (dBV )

(Only 3801-50: AC+DC)

NONE-Disables calculation function settings.

Example

When AVERage or PEAKhold is selected, the trigger signal source changes to IMMediate.

❖21p

The following ca lculation functions can be combined: AVER/NULL, PEAK/ NULL, NULL/AVER,DBx/AVER (/NULL), DBx/NULL (/AVER)

CALC:FUNC AVER

CALCulate:FUNCtion?

Description Query the function of the calculation. Response Return <Literal> format string:

AVER, PEAK, NULL, DBM,

DBV or NONE.

Example Return of

relative value (REL) display functions are enabled.

AVER or NULL indicates that the recording and

CALCulate:NULL:OFFSet?

Description Query the offset value of the relative value (REL) function. Response Return <NR3> format string.

CALCulate:DBM:REFerence <numeric>

Description Set the reference impedance for the decibel (dBm) conversion

screen.

Parameter Value to be entered to <numeric> : 1-9999

Stored in non-volatile memory.

CALCulate:DBM:REFerence?

Description Query the decibel (dBm) conversion of the reference

impedance.

Response Return <NR3> format string.

Chapter 5 Instructions of Command Sets

CALCulate

:AVER age

:MAXimum? :MINimum? :AVERage? :PRESent? :COUNt?

Description Query the value of the dynamic recording function. Response Return <NR3> format string. Example

CALC:AVER:MAX? : Query the maximum measuring CALC:AVER:MIN? : Query the minimum measuring CALC:AVER:AVER? : Query the average measuring value.

CALC:AVER:PRES? : Query the present measuring value. CALC:AVER:COUN?: Query the sampling frequency of the

CALCulate

:PEAKhold

:MAXimum? :MINimum?

Description Query the value of the peak-hold function. Response Return <NR3> format string. Example

CALC:PEAK:MAX?: Query the maximum peak-hold value. CALC:PEAK:MIN? : Query the minimum peak-hold value.

value. value.

average mode.

Chapter 5 Instructions of Command Sets

TRIGger Subsystem:

TRIGger:SOURce < BUS | REFreshhold | IMMediate >

Description Select the source of the start trigger signal. Parameter

Example

• If BUS or RE F is selected when the recordin g and peak hold functions are enabled, they are disabled.

• The threshold for the refresh-hold function must be set before selec ting BUS or REF .

• When the threshold of the refresh-hold mode is zero(OFF), the parameter REF is invalid. Contrary, the parameter BUS is invalid when the threshold of the refresh-hold mode is not zero(OFF).

BUS - select a bus command and enter the trigger (hold)

mode.

REF - select a refresh-hold trigger source and enter the trigger

mode

IMM - select the internal trigger source and escape the trigger

mode.

TRIG:SOUR BUS

TRIGger:SOURce?

Description Query the type of the trigger source. Response Return <Literal> format string:

BUS, REF, IMM

TRIGger:REFreshhold:COUNt <numeric>

Description Set the threshold for the refresh hold mode. Parameter

Stored in non-volatile memory.

<numeric>: 0, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000.

TRIGger:REFreshhold:COUNt?

Description Query the threshold of the refresh hold mode. Response Return <NR1> format string: 0 to 1000.

ABORt

Description When the trigger hold function is enabled (TRIG HOLD

displayed), the displayed value is reset and measurement is stopped. Measurement does not resume until a subsequent INIT or READ? command is sent, or when the HOLD key is pressed.

INITiate

Description Acquires one sample when the trigger hold function is enabled

(TRIG HOLD displayed). Valid when TRIGger:SOURce is set to BUS.

Chapter 5 Instructions of Command Sets

Measuring Subsystem:

FETCh? [@2]

Description • Return the primary or secondary function value of output

buffer.

• Retrieves the measurements taken by the INITiate command and places them into the device's output buffer.

• The query will return data any time that the last reading is valid.

• The meter produces an Error 230 in the following case, and no result is re tu r ne d : When invalid data is present while awaiting a trigger event (such as when the range is changed while the Hold function is enabled).

Parameter If parameter is omitted, the meter returns the primary function

value. Response Return <NR3> format string. Example

• If query the sub functio n value and the su b is not set, th e meter returns an error prompt to the host.

• The sub display is enabled by sending command. Origin al main function changes to sub function, and the main function is replaced by frequency or pulse function.

FETC? @2: Return the value, e.g. +1.23450000E+00

CONF:FREQ or CONF:PULS

READ?

Description • Return the primary function value of output buffer after the

next triggered measurement is complete.

• The command provides a method of performing a operation on fresh data.

•

The query command is id entic al to: ABOR; INIT; FETC?. The command is like FETCh? on the immediate trigger mode.

Response Return <NR3> format string.

FETC?

Chapter 5 Instructions of Command Sets

SOURce Subsystem:

SOURce?

Description Query the set the pulse output. (Only 3801-50）

Response

The function switch is at

<"function amplitude,frequency, duty ratio"> format string, the

examples are as following:

pulse output

Example Function

SQU+2.800000E+00, +1.200000E+03,+5.000000E+01

pulse output

Amplitude

2.8 V

Frequency

duty

1200 Hz、

50%

SOURce:DCYCle:DECimal <numeric>

Description Set the duty ratio of the

The function switch is at

Duty ratio = numeric / 256 (Unit :%) Parameter Value to be entered to <numeric>: 1 to 255 Example

SQU:DCYC:DEC 64: The duty ratio is 25%.

pulse output (Only 3801-50)

pulse output

SQUare:PWIDth:DECimal <numeric>

Description Set the pulse width of the

The function switch is at

Pulse width = numeric / (frequency x 0.256) Parameter Value to be entered to <numeric>: 1 to 255. Example

SQU:PWID:DEC 64: The pulse width is approx 0.42 ms on

pulse output

600 Hz.

.(Only 3801-50)

SQUare:FREQuency <numeric>

Description Set the frequency of the

The function switch is at Parameter <numeric>: 0.5, 1, 2, 5, 10, 15, 20, 25, 30, 40, 50, 60, 75, 80,

100, 120, 150, 200, 240, 300, 400, 480, 600, 800, 1200, 1600,

2400, 4800.

The other numeric is invalid value. Example

SQU:FREQ 600: Set the frequency at 600 Hz.

pulse output pulse output

.(Only 3801-50) .

Chapter 5 Instructions of Command Sets

SYSTem Subsystem:

SYSTem:ERRor?

Description Query the error message. Response Return <Number,"Error String"> format string. The following

table is a list of SCPI error message that might occur during operation.

The buffer size of the system error queue is one.

SCPI Error Message

Num

ber

-100

-200

Error String

No error Command error Execution error

Num

ber

-213

-220

-230

Error String

Init ignoredInit Parameter e rr o r Data stale

SYSTem:VERSion?

Description Query the version of the SCPI. Response Return 1999.0 string.

SYSTem:BEEPer [< CONTinous | STOP | TONE >]

Description • Set the action of the beeper.

• Ignore the original state of the beeper.

Parameter If parameter is omitted, the meter is set to tone.

CONT- beep continuously. STOP- stop to beep. TONE- beep one tone.

Example

SYST:BEEP:beep one tone.

SYSTem:TCOMpensated <Boolean>

Description Enable or disable the "0°C" temper atu re compe ns ati on.

The function switch is at Set this after enabling temperature measurement with the TEMP command .

C measurement

❖17p

Parameter Value to be entered to <Boolean>: ON, 1: OFF, 0

SYSTem:TENVironment <Boolean>

Description Select whether to display the environment (ambient)

temperature on the sub display (measured by an internal thermal sensor). This selection is available when not measuring on the sub displa y.

Parameter Value to be entered to <Boolean>: ON, 1: OFF, 0

Chapter 5 Instructions of Command Sets

SYSTem:BLIT <Boolean>

Description Enable or disable the back lit. Parameter Value to be entered to <Boolean>: ON, 1: OFF, 0

The backlit will be a uto turned off dependin g on below time se tting. To turn off backlit by this command once the time is set to "0".

SYSTem:BLIT:TIME <second>

Description Set the time of the back lit. Parameter Value to be entered to <second>: 0 to 99

(Set "0" to disable auto turning off backlit.)

Stored in non-volatile memory.

SYSTem:AOFF:TIME <minute>

Description Set the time of the auto power save function. Parameter Value to be entered to <minute>:0 to 99

(Set "0" to disable auto power save function.)

Stored in non-volatile memory.

SYSTem:CPERcent < 0-20 | 4-20 >

Description

Parameter Example

Stored in non-volatile memory.

Selects the % conversion display (4-20mA or 0-20mA) for DCmA

measurements. It is available when % conversion display is enabled

by the CONF:CURR:PERC command.

0-20: 0 mA (0 %) 〜20 mA (100 %)

4-20: 4 mA (0 %) 〜 20 mA (100 %)

SYST:CPER 4 to 20

SYSTem:BATTery?

Description Query the Parameter

Example

<NR3>Outputs a formatted text string. Response from 0 to 100%

corresponds to battery voltage of 6.0 to 10.0 V.

0% (6.0 V) to 100% (10 V)

Stored in non-volatile memory.

battery level.

SYSTem:DEFAult

Description

Returns meter settings to their factory defaul ts. Internal adjustments

are unaffected. The meter resets after executing this command.

Chapter 5 Instructions of Command Sets

STATus Subsystem:

STATus?

Description Query the status of the meter. Response Return <"ABCDEFGHIJKLMNOPQRSTU"> format string.

Each character means as following:

Item Description

A Recordong

Relative value

C D E

F Percentage 0: 0-20 mA, 1: 4-20 mA

G H Refresh hold 0: off, 1: on

(REL)

Decibel

Unused always 0

Peak hold 0 :off, 1: on

Trigger hold I: IMM, B: BUS, R: REF

0°C temperature

compensation

Beep 0: off, 1: 1 kHz, 2: 2 kHz, 4: 4 kHz, F: 600 Hz

Auto power

savef

Back lit 0: off, 1:on

Meter mode always L

0: off, 1: on

0: off, M: dBm, V: dBV

0: off, 1: on

0: off, 1:on

Input warning 0:normal, 1:warming

Terminal A

connection

0:Unconnected state, 1:Connected state (The test lead connects it with terminal A.)

0: ACV input 1: V input 2: voltage input & voltage output

Function switch

position

3: input 4: capacitance input 5: diode input 6:

μA input

7: mA.A input 8: pulse output (Only 3801-50)

Output status 0:stand-by, 1:operation

R S

Rate 4:50000 counts

Battery 0:normal, 1:low

Frequency

counter divisor

0:1 1:100 (3802-50 is always 0)

Auto range 0:off, 1:on

Chapter 6 Summary of SCPI Commands

Summary of SCPI

Commands Chapter 6

Command Parameter Description

CONFigure? CONFigure

:VOLTage

:AC :DC :ACDC

:CURRent

:AC :DC :ACDC PERC

:FCOUnter:PREScale

[@2] Query the function of the display.

Configure the meter to perform specified measurement.

Set the voltage measurement. [<range>] [<range>] [<range>]

[<range>] [<range>] [<range>]

[<0|100>]

(Only 3801-50)

Set the current measurement.

(Only 3801-50)

Set the frequency counter prescaling. (Only

3801-50)

:FREQuency :PULSe

:PWIDth :NWIDth :PDUTycycle

:NDUTycycle :CAPacitance :RESistance

:CONTinuity

:CONDuctance :DIODe :TEMPerature

[<range>] Set the meter to frequency measurement.

Set the pulse measurement. [<range>] Positive pulse width [<range>] Negative pulse width

Positive pulse duty ratio

Negative pulse duty ratio [<range>] Set the capacitance measurement . [<range>] Set the resistance measurement.

[<range>]

[<K|J>] Set the temperature measurement.

Set the resistance measurement with the

continuity test.

Set the conductance measurement.

Set the diode measurement.

Chapter 6 Summary of SCPI Commands

Command Parameter Description

TRIGger

:SOURce? :SOURce :REF:COUNt?

:REF:COUNt ABORt INITiate[:IMMediate] FETCh?

READ?

CALCulate

:FUNCtion?

:FUNCtion

Trigger func tion Query the trigger source type.

<BUS|REF|IMM> Select a trigger source.

Query the threshold of the refresh-hold mode.

<numeric>: 0 to 1000 Set the threshold of the refresh-hold mode.

Reset the trigger system of the meter. Initiate the trigger system of the meter.

[@2]

Return the data any time t hat the l ast r eading i s valid.

Query the calculation function.

<function> Set the calculation function.

:NULL:OFFSet?

:DBM

:REFerence?

:REFerence

:AVERage

:MAXimum? :MINimum? :AVERage? :PRESent? :COUNt?

:PEAKhold

:MAXimum? :MINimum?

<numeric>:1 to 9999

Query the offset value of the relative (REL) function.

Query the decibel (dBm) conversion of the reference impedance.

Set the reference impedance for the decibel (dBm) conversion screen.

Query the value of the dynamic recording function.

Query the value of the peak-hold function.

Chapter 6 Summary of SCPI Commands

Command Parameter Description

SOURce? SQUare

:DCYCle:DECimal <numeric>: 1 to 255 :PWIDth:DECimal <numeric>: 1 to 255 :FREQuency <numeric>

SYSTem

:AOFF:TIME <minute>: 0 to 99 :BEEPer [<CONT|STOP|TONE>] :BLIT <Boolean>

:TIME <second>: 0 to 99 :CPERcent < 0-20 | 4-20 > For DCmA measurements, select the % conversion. :TCOMpensated <Boolean>

:TENVironment <Boolean>

Query the plus output function. (Only 3801-50) Set the puls output. (Only 3801-50) Set the duty ratio of the pulse output. Set the pulse width of the Set the frequency of the

pulse output

Set the time of the auto power save function. Set the action of the beeper

Enable or disable the back lit. Set the time of the back lit.

Sets 0 ℃ temperature compensation. Selects display of environment (ambi ent)

temperature.

:DEFAult

:BATTery?

:ERRor? :VERSion?

STATus?

Returns meter settings to their fact ory defaults. Queries the remaining charge state of the

battery. Query the error message. Query the version of the SCPI. Query the status of the meter.

Chapter 6 Summary of SCPI Commands

Chapter 7 Remote Program Example Using Visual Basic 6

Remote Program Example Using

Visual Basic 6 Chapter 7

Acquires ten measurement values and displays the aver age value.

Private Sub Command1_Click() ' Create a form containing the followin g three objects: ' 1.TextBox - Text1 ' 2.CommandButton - Command1 ' 3. Microsoft Comm Control 6.0- MSComm1 added from Menu Bar / Project / Components ' Add from the menu bar [Project] - [Component].

MSComm1.CommPort = 1 ' set COM1 port MSComm1.PortOpen = True ' open COM MSComm1.Settin g s = "9600,n,8,1" ' communications settings

MSComm1.Output = "LLO" & vbCrLf ' send Local lock command MSComm1.Output = "CONF:VOLT:DC 5" & vbCrLf ' set DCV 5V function

For i = 1 To 50000 ' wait for function ready DoEvents Next i

buffer = MSComm1.Input ' clear COM input buffer Text1.Text = "" ' clear display reading = 0 ' clear average value

For i = 1 To 10 MSComm1.Output = "FETC?" & vbCrLf ' send FETCH? command buffer = "" Do buffer = buffer & MSComm1.Input Loop While InStr(buffer, vbCrLf) = 0 ' receive reading reading = reading + Val(buffer) ' sum reading Text1.Text = Text1.Text & "Reading" & i & " = " & buffer & vbCrLf

' show reading

Next i Text1.Text = Text1.Text & vbCrLf & "Average = " & (reading / 10) & vbCrLf

' show average

MSComm1.Output = "GTL" & vbCrLf ' send Goto Local command MSComm1.Port Open = False ' close COM End Sub

Chapter 7 Remote Program Example Using Visual Basic 6

HIOKI 3801-50, 3802-50 DIGITAL HiTESTER

Remote Operation Manual

Publication date: November 2005 Edition 1 Edited and published by HIOKI E.E. CORPORATION

Technical Support Section All inquiries to International Sales and Marketing Department

81 Koizumi, Ueda, Nagano, 386-1192, Japan TEL: +81-268-28-0562 / FAX: +81-268-28-0568 E-mail: os-com@hioki. co .jp URL http://www.hioki.co.jp/

Printed in Japan 3802C982-00

• All reasonable care has been taken in the production of this manual, but if you find any points which ar e unclear or in error, please contact your supplier or the International Sales and Marketing Department at HIOKI headquarters.

• In the interests of product development, the contents of this manual are subject to revision without prior notice.

• Unauthorized reproduction or copying of this manual is prohibited.

HEAD OFFICE

81 Koizumi, Ueda, Nagano 386-1192, Japan TEL +81-268-28-0562 / FAX +81-268-28-0568 E-mail: os-com@hioki.co.jp / URL http://www.hioki.co.jp/

HIOKI USA CORPORATION

6 Corporate Drive, Cranbury , NJ 08512, USA TEL +1-609-409-9109 / FAX +1-609-409-9108

3802C982-00 05-11H

Hioki 3801-50, 3802-50 Remote Operation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Introduction

Symbols

5.1 IEEE 488 Common Commands

5.2 SCPI Commands