Agilent Technologies 4288A User Manual

Chapter 6 79
Reading Out Measured Result
Reading out measurement signal level monitor result
6. Reading out Measured
Result
Reading out measurement signal level monitor result
To read out measurement signal level monitor result, use the following command:
• :DATA? {IMON|VMON} on page 171
Example 6-8 shows a sample program to read out the measurement signal level monitor
result. This program is stored on the sample program disk under the filename
“lvl_mon.bas.”
This program turns ON the measurement signal level monitor function, performs
measurement once, and reads out and displays the measurement signal level monitor result.
The program is detailed below.
Line 40 Sets the GPIB address.
Line 50 Sets the data transfer format to the ASCII format.
Lines 70 to 80 Turns ON the measurement signal level current & voltage monitor
function.
Line 90 Makes the setup display the measurement signal level monitor result in
the instrument setup display area.
Lines 110 to 120 Turns ON the trigger system continuous startup and sets the trigger
mode to GPIB trigger.
Lines 160 to 200 Makes the setup generate an SRQ when measurement finishes and
clears the status byte register and operation status event register.
Lines 240 to 250 Sets the branch destination of the SRQ interrupt and enables the SRQ
interrupt.
Lines 260 to 270 Triggers the measurement through GPIB and waits for the completion
of measurement.
Lines 290 to 300 Reads out the voltage monitor value of the measurement signal level.
Lines 310 to 320 Reads out the current monitor value of the measurement signal level.
Lines 360 to 410 Converts the voltage monitor value and current monitor value of the
measurement signal level into mV and
µA, respectively, and displays
them.

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