Agilent Technologies 4288A User Manual

168 Chapter 10
Command Reference
:DATA
:DATA
The function of this command when executed varies depending on the 1st parameter
specified as shown in the table below.
:DATA? {BUF1|BUF2|BUF3}
Syntax :DATA[:DATA]? {BUF1|BUF2|BUF3}
Description Reads out data in data buffer 1, data buffer 2 or data buffer 3. Executing this command
rewinds the pointer to the specified data buffer (the location to feed measurement data) to
the start. (Query only)
The transfer format of data read out with this command conforms to the setup made with
the :FORM command.
Parameters
1st parameter Function
BUF1, BUF2 or
BUF3
Reads out data in data buffer 1, data buffer 2, or data buffer 3.
For details, refer to :DATA? {BUF1|BUF2|BUF3} on page 168.
IMON or VMON Reads out the measured value of the current monitor or voltage
monitor. For details, refer to :DATA? {IMON|VMON} on
page 171.
REF1 or REF2 Sets or reads out the reference value of the primary parameter or
secondary parameter used in the deviation measurement mode.
For details, refer to :DATA {REF1|REF2} on page 172.
Description
BUF1 Reads out data in data buffer 1.
BUF2 Reads out data in data buffer 2.
BUF3 Reads out data in data buffer 3.

Agilent Technologies 4288A Specifications

General

Frequency Range	20 Hz to 1 MHz
Basic Accuracy	0.1%
Display	LCD
Frequency	20 Hz to 1 MHz
Maximum AC signal level	2 Vrms
Interface	GPIB, RS-232
Measurement Parameters	C, L, R, D, Q
Input Impedance	1 MΩ
Power Requirements	100 V to 240 V, 50 Hz to 60 Hz
Measurement Type	Capacitance (C), Inductance (L), Resistance (R), Dissipation Factor (D), Quality Factor (Q)
Bias Current	0 to +100 mA (programmable)

Summary

2 Overview of Remote Control

Setting Up a GPIB Remote Control System

Explains how to set up a GPIB remote control system for the Agilent 4288A.

3 Setting Up Measurement Conditions and Display

Setting Up Measurement Conditions

Details how to configure measurement parameters like frequency, range, time, averaging, and trigger delay.

4 Preparation for Accurate Measurement (Executing Compensation)

Executing OPEN/SHORT/LOAD Compensation

Details the process of performing OPEN, SHORT, and LOAD compensation for accurate measurements.

Using the Multi-compensation Function

Enables and configures multi-compensation for multiple channels or parameters.

5 Starting (Triggering) Measurement and Waiting for Completion of Measurement

Starting (triggering) Measurement

Describes the trigger system states and methods for starting measurements automatically or on demand.

Waiting For Completion Of Measurement (detecting completion of measurement)

Explains detecting measurement completion using SRQ and status registers for program flow.

6 Reading Out Measured Result

Reading out measured result using *TRG command

Describes using *TRG to trigger measurement and immediately read results.

Reading out measured result using :FETC? command

Explains using :FETC? for triggering and reading results, suitable for external controllers.

Reading out measured result using :READ? command

7 Sorting Based on Measured Result (Comparator Function)

Setting Up Comparator Function

Explains enabling the comparator and configuring limit ranges for sorting measurements.

Rejecting Excessively Low Measured Results (Low C reject function)

8 Avoiding Mistakes Related to Work and Daily Checks

Avoiding Improper input from the front panel (key lock function)

Detecting the occurrence of an error

Explains methods for detecting errors using the error queue and status report system.

Daily Checks (executing the self-test)

9 Measurement Applications (Sample Programs)

Measurement with Auto-sorting System

Measurement with changing channels (scanning)

B Information for Replacing 4278A with 4288A

Functional Comparison and GPIB Command Correspondence

Compensation

Compares compensation functions (ON/OFF, parameter format, standard setup, alarm messages).

Multi-compensation

Comparator

Compares sorting parameters, limit modes, BIN sorting, AUX BIN, and Low C reject functions.

C Status Reporting System

General Status Register Model

D Initial Settings

Initial Settings, Settings that can be Saved/Recalled, Settings that can be Backed Up

Provides initial, save/recall, and backup settings for instrument configuration.

E At-a-glance Table of Operations When Overload or Low C is Detected

Operations when overload/Low C is detected

Describes display, GPIB, and handler interface outputs for overload or Low C conditions.

F Error Messages

Error Messages

Lists error messages and their remedies, ordered by error number.

Warning Messages (WARNING)

G 4268A vs. 4288A GPIB Command Correspondence Table