(RESET returns the Keysight 3458A to the powered-on state.) Command. Key Group. Key Sequence. RESET. Function/Range. Reset. DCV.
A User's Guide to Keysight 3458A Front Panel Operation Reading/Menu Display · Alphanumeric Reading, Units, and Functions · Command Menu · Status Annunciators · MORE INFO (additional information viewable with ) Function/Range Keys · Immediate Execute Function Keys · Manual Range and Menu · Display Window · GPIB Bus Address Menu Keys · Commonly Used Commands · Shifted Alphabetic Entry Points into Command Menu A 5-Minute Tutorial of Front Panel Operation Example 1: Making a measurement with any function after turning on the Keysight 3458A. The ACV function serves as a typical example of the immediate execute keys found in the Function/Range key group. Connect the appropriate signal to the input terminals and press the keys shown. Command Key Group Key Sequence ACV Function/Range ACV (Any other function key in the Function/Range Key Group acts similarly; the Keysight 3458A changes function, automatically ranges, and begins measurements.) RESET Function/Range (blue Reset (RESET returns the Keysight 3458A to the powered-on state.) Example 2: Making a precision Vdc measurement on the 10 V range. Command Key Group Key Sequence RESET DCV Function/Range Function/Range (blue Reset DCV 10 V Range Function/Range or (The and keys are pressed until the desired range is displayed: in this case, XX.XXXXX V DC (X is any number). Leading zeros are always displayed for easy range identification.) NPLC 100 Menu Numeric/User (Measurement will take about 3 seconds.) NPLC 1 0 0 Enter NDIG 8 Function/Range Menu Numeric/User (Sets the display to 8 1/2 digits.) (blue N 8 Enter The shifted Menu Keys allow alphabetic access to all Keysight 3458A commands and command parameters. The commands and command parameters are scrolled from A to Z by using the Menu Scroll keys ( and ) found in the Function/ Range keys. Command parameters are accessed by using the Display/Window keys and , also found in the Function/Range keys, after the command is located. Example 3: Making a very precise Vac measurement using the Synchronous ACV measurement function. (At power-on, the Keysight 3458A is set to the generally more useful Analog ACV measurement function if you select ACV, but you should use Synchronous ACV for very precise measurements of periodic waveforms.) Command Key Group Key Sequence RESET ACV Function/Range Function/Range (blue Reset ACV SETACV SYNC Function/Range (blue Menu S Function/Range Numeric/User Enter (The MORE INFO annunciator should be illuminated. The MORE INFO annunciator indicates that some part of the measurement configuration is in a non-standard state. To view this information press . Your display should show SETACV SYNC. Now press again; the display is returned to the measurement state.) RES .002 Function/Range (blue Menu R Function/Range Numeric/User . 0 0 2 Enter (The RES command sets the % resolution of the measurement. A function change causes RES to default to RES .01 (0.01%) with reading rate of 1 per 3 s.) LFILTER ON Function/Range (blue Menu L Function/Range Numeric/User Enter (Suggested for inputs with frequencies below 50kHz.) *03458-90007* 03458-90007 Short Cuts Numeric/User Keys · 10-Key Pad for Numeric Entry · Deep RECALL buffer of Executed Commands · MENU type selection · 10 Battery Backed Up User Definable Keys F0-F9 Auto-Calibration (ACAL) The Keysight 3458A Auto-Calibration (ACAL) function removes measurement errors caused by component temperature and time drift. For maximum accuracy, ACAL should be performed every 24 hours. For example, additional Vdc volts gain errors due to temperature changes are reduced from 1 ppm/°C to 0.15 ppm/°C (over 6:1) using ACAL. In ACV volts, additional gain error due to temperature changes are reduced from 30 ppm/°C to less than 1 ppm/°C (over 30:1) using ACAL. The time to perform a complete ACAL is about 12 minutes. ACAL ACV takes about 1 minute, ACAL DCV takes about 2 minutes, and ACAL OHM takes about 9 minutes. For monitoring temperature changes, the Keysight 3458A provides the TEMP? com- mand (found in the command Menu) to measure the internal instrument temperature. Refer to the User's Guide for more details. ACAL keystroke sequence. CAaulto , 3 4 5 8 Enter Configuration for Highly Accurate Measurements with the Keysight 3458A (You should perform an ACAL every 24 hours for the appropriate function after the Keysight 3458A has been powered-on and in a stable temperature environment for a minimum of four hours.) Function Comment Key Sequence ____________________________DCV____________________________ RESET NPLC 200 NDIG 8 Power-on state (VDC) Integration Time (1) 8 1/2 Digits (blue Reset NPLC 2 0 0 (blue N 8 Enter Enter ____________________________ACV____________________________ RESET ACV Power-on state Function Vac (blue Reset ACV SETACV SYNC RES .002 LFILTER ON Synchronous AC Max AC Reading Res. Internal LP Filter (2) (blue S (blue R (blue L Enter . 0 0 2 Enter Enter __________________________OHMS____________________________ RESET OHMF OCOMP ON DELAY 1 NPLC 200 Power-on state Function Four-Wire Ohms For R <= 100 kOhms (3) Adds 1 s delay (4) Integration Time (blue Reset (blue OHMF Offset Comp (blue C NPLC 2 Enter 1 Enter 0 0 Enter 1. Longer integration times reduce measurement noise and increase measurement resolution. 2. Recommended for frequencies less than 50kHz. 3. OCOMP ON turns on the offset compensation feature of the Keysight 3458A. OCOMP ON minimizes the effect of any thermally generated offset voltage from creating errors in resistance measurements. 4. Adds 1 s settling delay to reduce effects of dielectric absorption errors of cabling and the resistor under test Store and Recall Instrument Setups Store and Recall can significantly reduce the number of keystrokes necessary for a complex configuration. Simply pressing Store State , pressing a Numeric Key X (0-127) and pressing Enter , stores the state of the Keysight 3458A as a state to recall by pressing Recall State X. Shipped with the Keysight 3458A is a small plastic overlay that fits on key 5 to document your User Key and Stored State definitions. Use Example 3 and perform the following: Command Key Group Key Sequence SSTATE 1 Menu Numeric/User Store State 1 Enter (Stores the Keysight 3458A's state in stored state 1.) RESET Function/Range (blue Reset (RESET returns the Keysight 3458A to the powered-on state.) RSTATE 1 Menu Numeric/User (Returns the Keysight 3458A to stored state 1.) Recall State 1 Enter User Definable Keys In addition to the State Store and Recall commands, you can also define any of the User keys, F0-F9, in the Numeric/User Key Group to be any string of commands. Let's use Example 3 one more time to show how this feature works. Command Key Sequence DEFKEY DEFAULT (blue Def Key Enter (Clears all previously defined User Definable keys.) DEFKEY F0, " 0 (Ready to accept commands.) FUNC ACV (blue E (three times) (four times) (blue ; (The delimiter used to separate commands is " ; ". The delimiter used to separate parameters is " , ".) SETACV SYNC RES .002 LFILTER ON (blue S (blue R (blue L (blue ; . 0 0 2 (blue ; Enter DEFKEY F1, " 1 MATH NULL (blue L (four times) (eight times) Enter (MATH NULL displays the difference between the first and subsequent measure- ments.) Now Use It! (blue f0 Enter (blue f1 Enter (Note the MATH annunciator is turned on.) Command Recall Buffer Operation The command recall buffer recalls previously entered commands. If you have performed the sequence in the User Definable Keys you can expect to have the results listed below. Command Key Group RECALL Function/Range Numeric/User (MATH NULL should appear in the Display.) Key Sequence (blue Recall The MENU Command To access the commands alphabetically, you use the Menu Keys. As the Keysight 3458A is shipped, only the most commonly used commands are available in this "SHORT" menu. To access all the commands, you have to use the Menu Key with the "FULL' parameter. Command MENU FULL Key Group Function/Range Numeric/User Function/Range Numeric/User Key Sequence (blue Menu Enter Printed in Malaysia Edition 2 July 2014 © Keysight Technologies 1988-2014Acrobat Distiller 9.5.5 (Windows)