Krohn-Hite 526 Operating Manual
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Krohn-Hite 526 Operating Manual

Precision dc source/calibrator +/- 100nv to +/- 111v +/- 10na to +/- 111ma
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Model 526
Precision DC Source/Calibrator
±100nV to ±111V
±10nA to ±111mA
Operating Manual

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  • Page 1 Model 526 Precision DC Source/Calibrator ±100nV to ±111V ±10nA to ±111mA Operating Manual...
  • Page 2 This warranty does not apply to fuses or batteries. No other warranty is expressed or implied. Krohn-Hite Corporation reserves the right to make design changes at any time without incurring any obligation to incorporate these changes in instruments previously purchased.
  • Page 3 Operating Manual Copyright 2013. All rights reserved. Contents of this publication may not be reproduced in any form without the written permission of Krohn-Hite Corporation. Revision 3.2, Published 6/13, Printed in U.S.A. 15 Jonathan Drive, Unit 4, Brockton, MA 02301-5566 Tel: (508) 580-1660;...

  • Page 5: Table Of Contents

    2.4 Quick Start........2-3 2.4.1 526 Tones ....... 2-3 2.4.2 LOCAL Key.
  • Page 6 Table of Contents 2.4.8.1 HV Led ......2-6 2.4.8.2 Wire Connections ..... . . 2-6 2.4.9 Rear Panel Connectors .
  • Page 7 2.8 Overloading ........2-29 SECTION 3.0 526 (STD) GPIB PROGRAMMING ..... . . 3-1 3.1 Introduction .
  • Page 8 Connecting Through a Network ....6-1 6.2.3 Connecting Directly to the Model 526 (no network) ..6-1 6.2.4 How to Find the Current IP Address:.
  • Page 9 Table of Contents SECTION 7.0 INCOMING ACCEPTANCE ......7-1 7.1 Introduction ........7-1 7.2 Warm-Up Time.
  • Page 10 Table of Contents...
  • Page 11 The purchaser assumes all risk of loss or damage to instrument upon delivery by Krohn-Hite to the carrier. If an instrument is damaged in transit, purchaser must file all claims for damage with the carrier to obtain compensation.

  • Page 12: Power Source

    Proper Fuse To avoid damage to the Model 526 or to prevent a fire hazard, use the correct fuse for the line voltage selected. Proper fuse requirement is screened on the rear panel of the instrument above the power connector.
  • Page 13 REMOVE the POWER and do not use the instrument until safe operation can be verified by service-trained personnel. If necessary, return the instrument to the Krohn-Hite Service Department for service and repair to ensure that the safety features are maintained.
  • Page 14 Inspect the 526 carefully for damage, and immediately report any damage to the shipper. If you need to return the 526 for any reason, use the original container if possible. If not, you can order a new container from Krohn-Hite Corporation at (508) 580-1660 indicating the model and serial number.

  • Page 15: Section 1.0 General Description And Specifications

    ±0V to ±112V or 1mA to 112mA. Output Voltage or Current Compliance Limits A hardware fail safe compliance limits can be set in the Model 526. Settable limits are: 120V, 36V, 26V or 16V.

  • Page 16: Specifications

    8200. Applications The 526 is well suited for a variety of applications such as: the design, check and calibration of high speed, high resolution A/D converters; design and certification of high speed data logging and process control systems; calibration of digital voltmeters and multimeters; as an “IMBEDDED STANDARD” and/or simulator;...

  • Page 17: Current Mode Specifications

    Subsets: SH1, AH1, T6, L4, SR1, RL0, PP1, DC0, DT0, E1. Line Termination: The GPIB EOI signal is always sent with the last character on a line. Talker Function: Allows interrogation of the Model 526 by a controller. Communications Data Rate: Typically 5ms without range change, 45ms with range change.

  • Page 18: Terminals

    Recall (RCL): Allows viewing and outputting stored front panel set-ups from memory locations 01 thru 32. Edit (EDT): Allows for editing any memory location from 01 to 32. Remote (REM): Indicates when the Model 526 is remotely controlled by IEEE-488 or LAN (optional). 1.2.6 Special Features Port Selection: Allows setting IEEE-488 port and address or optional LAN port if installed.

  • Page 19: Safety

    Section 1 - General Description and Specifications 1.2.8 Safety The Model 526 is designed to meet the requirements of the following standards of safety for electrical equipment for measurement, control and laboratory use: IEC61010-1, EN61010-1. 1.2.9 Electromagnetic Compatibility Emissions and Immunity: EN61326-1, EMC, 61000-4-2; ESD, 61000-4-3; Radiated Immunity, 61000-4-4;...
  • Page 20 Section 1 - General Description and Specifications CAB-005: Cable, multi-stacking double banana plug, two conductor shielded balance line. CAB-018: Cable, multi-stacking double banana plug. CAB-023: Cable Set, Low Thermal EMF Retractable Banana. The CAB023 is a low thermal EMF retractable sheath banana plug patch cord set.
  • Page 21 Section 1 - General Description and Specifications CAB-024: Cable set, low thermal EMF spade lug. The CAB024 is a low thermal EMF spade lug patch cord set for low voltage measurements. These low thermal cables minimize thermal errors so accurate low voltage measurements can be made.
  • Page 22 Section 1 - General Description and Specifications NOTES _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________...

  • Page 23: Section 2.0 Operation

    Selecting Line Voltage The 526 operates from a line voltage of 105 to 130 or 210 to 260 volts ac, single phase, 50Hz/60Hz, 60 watts max. The following paragraphs explain how to change the voltage settings and the fuse.
  • Page 24 Connect the power cord to the power entry module and wall outlet. The 526 is now ready to be operated on the selected ac line voltage.

  • Page 25: Placement And Rack Mounting

    Rack Mount Kit, Model RK-314. Quick Start After the 526 has been unboxed and set to the proper line voltage setting, the unit is ready to turn on. Plug the 526 into the power source and turn on.

  • Page 26: Local Key

    526 sets the voltage/current to the maximum limit for the new range. If you change to a higher range, the 526 will maintains the same voltage from the previous or lower range.

  • Page 27: Recalling Memory Set-Ups

    Section 2 - Operation Indicates 1V Range is set. OUTPUT SETTING display will indicate .XXXXXXV. Indicates 10V or 10mA Range is set. OUTPUT SETTING will display indicate either X.XXXXXV or X.XXXXXmA. 2.4.6 Recalling Memory Set-Ups To recall a saved set-up from a memory location, do the following: Press [RECALL] key.

  • Page 28: Front Panel Output Terminals

    Figure 2.3 4-Wire and 2-Wire Connections When making connections to the Model 526, it is desirable to make them in a way that minimizes the thermally generated voltages (thermal EMF) produced at the junction of two metals. All connections will produce thermal voltages.

  • Page 29: Rear Panel Connectors

    Rear Panel Connectors 2.4.9.1 IEEE-488 Connector The model 526 is compatible with the IEEE Std. 488/1978. The applicable reference publication is: IEEE Standard Digital Interface for Programmable Instrumentation (IEEE Std. 488/1978). Publisher: The Institute of Electrical and Electronics Engineers, Inc.

  • Page 30: Rear Panel Output Connector And Mating Connector

    Front Panel Controls The Model 526 was designed for ease of use. All front panel operation is accomplished with either a press of a button or by turning the decade control knob. Menu functions are provided for selecting instrument set-ups such as "Pass Thru Zero", "Full or Partial Display", "Port Selection", etc.

  • Page 31: Recall] Key

    2.5.1.3 [EDIT] Key When the [EDIT] key is pressed, it will place the 526 in EDT mode only if it was from RCL mode. If pressed when not in the RCL mode, a long beep will sound, indicating the unit is not in the RCL.

  • Page 32: Polarity Key

    OUTPUT SETTING will display indicate either X.XXXXXV X.XXXXXmA. 2.5.1.7 [VOLTS/MILLI AMP] Key When pressed, the 526 will change the output setting to Volts or Current operation and CROWBAR the output terminals. The output changes to CROWBAR for safety reasons. 2-10...

  • Page 33: Crowbar] Key

    When set to ACTIVE, the output voltage or current will be set at the output terminals. 2.5.1.9 [2W SENSE 4W] Key When pressed, the 526 toggles between 2-wire or 4-wire operation. The SENSE terminals are active in the 4W mode only. Display will indicate 2 or 4 under SENSE. 2.5.1.10...

  • Page 34: Display Information

    Below explains each Display item in detail. 2.6.1 Mode There are 4 modes of operation for the 526, local (LCL), recall (RCL), edit (EDT) and remote (REM). Local (LCL) - Indicates 526 is in the local mode. All front panel controls are active.

  • Page 35: Memory

    Section 2 - Operation 2.6.2 Memory 32 non-volatile memory locations are provided from 01 to 32 for storing and recalling: output voltage, current, 2-wire and 4-wire, active and crowbar values that can be recalled at a later time. Memory location 00 is reserved for Factory Default settings and can not be altered.

  • Page 36: Sense Wires

    When CROWBAR, the internal voltage is set to 0V, disconnects the output amplifier, and connects the HI and LO output terminals together through relay contacts. Set the 526 to a NO OUTPUT state. Menu and Selector Knob Control The following information is an explanation of the MENU system. To activate the MENU system, press the [MENU] key.

  • Page 37: Menu 1 - View Set-Up

    2.7.1 Menu 1 - View Set-Up View Set-Up allows the user view the 10 set-up conditions for the 526. These conditions can not be altered in this mode, only viewed. When [ENTER/STORE] is pressed, the following information will be displayed when scrolling with the SELECTOR knob.

  • Page 38: Voltage Limits View

    Power On Sequence View Indicates the Power On Sequence is set to "Factory Defaults". Each time the 526 is powered on, it will return to Factory Default settings (see Section 2.7.6). Indicates the Power On Sequence is set to "Last LCL Setting".

  • Page 39: Full Or Partial Display View

    (from positive to negative and negative to positive). Indicates the decade controls will NOT pass through zero (from positive to negative and negative to positive). The 526 is will sound a long beep when the decade control attempts to PASS THRU ZERO. 2.7.1.8...

  • Page 40: Exiting To Main Level

    2.7.2 Menu 2 - Port Selection Port Selection provides for the set-up of the 526 remote programming port to either IEEE-488 (GPIB) or LAN. An asterisk (*) beside the selected item indicates that it is enabled. When [ENTER] is pressed, the display will indicate IEEE-488 (GPIB); turning the SELECTOR knob will change the display to LAN.

  • Page 41: Ieee-488 (Gpib)

    Section 2 - Operation Display for entering in GPIB address. Indicates LAN is not installed. Indicates setting has been stored and pressing [ENTER] will return display to 2 PORT SELECTION. 2.7.2.1 IEEE-488 (GPIB) When [ENTER] is pressed, the IEEE-488 port becomes enabled and the display will change to allow for the IEEE-488 port ADDRESS setting.

  • Page 42: Lan (Optional)

    Menu 3 - V Output Limit The Model 526 provides the ability to set a voltage limit for both positive and negative polarities. The limits are settable between 0V and 112V. When the POLARITY is set to +, the Output Limit will be positive and the display will indicate the set value under OUTPUT LIMIT (V-mA).
  • Page 43 Section 2 - Operation When [ENTER] is pressed, the display will indicate POS. VOLTAGE LIMIT, turning the SELECTOR knob will change the display to NEG. VOLTAGE LIMIT. Continuing to turn the SELECTOR knob will change the display to ENTER TO GO BACK and ENTER TO EXIT MENU, eventually returning back to POS.

  • Page 44: Menu 4 I Output Limit

    Menu 4 I Output Limit The Model 526 provides current limiting for both positive and negative polarities. The limits can be set between 0mA and 112mA. When the POLARITY is set to +, the Output Limit will be positive and the display will indicate the set value under OUTPUT LIMIT (V-mA).

  • Page 45: Menu 5 V Compliance Limit (Fail Safe)

    The V Compliance Limit was provided as a second level of hardware protection for the 526. How it works is quite simple. If the 526 is operating in the current mode and the load is removed from the output terminals, the output voltage will be limited to the Compliance level that is set.

  • Page 46: Menu 6 - Power-On Set-Up

    Menu 6 - Power-On Set-Up The 526 provides the ability to set the power on condition to either Factory Default or the Last LCL Setting when the unit was turned off. A *RST command does not store the last setting.

  • Page 47: Changing Power-On Set-Up Setting

    Section 2 - Operation 2.7.6.1 Changing Power-On Set-Up Setting From the Menu Function, scroll to 6 POWER ON SET-UP. Press [ENTER]. First option in the display will be FACTORY DEFAULTS. An * indicates this option is selected. If not, press [ENTER] to select or scroll to next option. When pressing [ENTER] the display will indicate that the selection was STORED and to press ENTER TO CONTINUE.

  • Page 48: Menu 7 - Display Area

    Section 2 - Operation 2.7.7 Menu 7 - Display Area The 526 provides for full and partial display selection. Figures 2.4 and 2.5 below show the area displayed for each setting. Figure 2.4 Full Display Figure 2.5 Partial Display 2.7.7.1...

  • Page 49: Menu 8 - Pass Thru Zero

    Menu 8 - Pass Thru Zero Pass Thru Zero allows the 526 decade controls to pass through zero. When turning a decade control from a plus voltage/current through zero to a negative voltage/current, changing polarity is not required. This allows a user to work around zero and not have to stop to make a polarity change.

  • Page 50: Menu 9 - Clr User Memory

    Clear User Memory is provided for a global reset of all memory locations. Clearing User Memory sets the OUTPUT SETTING to +00.0000mV, the OUTPUT to CROWBAR and the SENSE WIRES selection to 2 WIRE. All other 526 settings are not saved in the user memory area and can only be changed from the MENU mode.

  • Page 51: Changing Remote Protocol Setting

    Overloading When the 526 is placed in an overload condition, it will place the output into a CROWBAR state, preventing any damage that may occur. Removing the overload condition will allow the unit to return to ACTIVE mode. [CROWBAR] must be pressed in the local mode or data must be received in the remote mode to clear the CROWBAR condition.
  • Page 52 Section 2 - Operation NOTES _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ 2-30...

  • Page 53: Section 3.0 526 (Std) Gpib Programming

    526 without having to make changes to existing programs. The standard protocol of the 526 is KH 526 PROTOCOL, which is the same as the Model 522-RA7. Each protocol can be simply changed by way of the REMOTE PROTOCOL Menu. Selections are KH 526, KH 522 and Analogic/DP.

  • Page 54: Ieee-488 (Gpib) Programming

    PROTOCOL in the display, this protocol is selected; if not, press [ENTER]. The display will then indicate STORED, ENTER TO CONTINUE. Press [ENTER] to return to 10 REMOTE PROTOCOL. To verify that the 526 is now in the right mode, press [ENTER] again, the asterisk (*) should be next to KH 526 PROTOCOL (*KH 526 PROTOCOL).

  • Page 55: Group Commands

    3.3.4 Group Commands There are several groups of commands which the 526 will act upon when received over the bus. A. Normal messages to program the unit’s output to a specified voltage. B. Messages requesting specific responses on the condition of the 526.

  • Page 56: Output Data Byte String Format

    The analog output will change to a new value after receiving the end of message. NOTE: Optional in Krohn-Hite protocol mode, is a 2 or 4 can be added to the data string as the 9th character that will allow 2 wire mode to be enabled.

  • Page 57: Talk Enable Modes

    Status: S or s Identification query: *IDN? or ID? (eoi), see section 3.3.7.5 What’s wrong: ? (eoi), see section 3.3.7.7 Upon receipt of any of the above messages, and upon receipt of MTA, the MODEL 526 will respond with the appropriate information. 3.3.7 C or c (Compliance Limit) Use this command to set the Compliance Limit remotely.
  • Page 59 Section 3 - Model 526 (STD) GPIB Programming Status Message Format Character Position String Information Returned Value + = Positive Polarity 0 = Crowbar Polarity - = Negative Polarity 1 thru 6 Decade Setting 0 to 10 ("J" is used for 10)

  • Page 60: M Or M (Set Memory)

    ? (What's Wrong Query) The 526 may be serial polled or remotely configured for parallel polling. After determining that the 526 is the requesting instrument, sending a ?, followed by a request to talk will produce a brief description of the offending condition.

  • Page 61: Programming Examples

    The 526 should see an eight (8) or nine (9)character word for correct programming. It will act on the NOTE: first 8 bytes. The 526 must receive an end of message terminator to act on the message. It will recognize CR LF, LF or EOI with the last byte as a terminator.
  • Page 62 Section 3 - Model 526 (STD) GPIB Programming NOTES _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ 3-10...

  • Page 63: Introduction

    Remote Programming Emulation Introduction The Model 526 is unique from other calibrators in that it has the ability to emulate and operating remotely as one of the older Models 520, 521 and 522 DC Voltage/Current Calibrator. Does not support units with RA-7 option (1V option). Use the 526 in its native mode for units with NOTE: these options.

  • Page 64: Interface Messages

    0. The instrument will also go to its listener idle state when in the local mode. 4.2.2 Groups of Commands There are several groups of commands which the 526 (in 522 Protocol) will act upon, when received over the bus: A. Normal messages to program the unit’s output to a specified voltage.

  • Page 65: Responses

    ID?: Returns instrument model number and firmware version number: “KROHN-HITE, 526, VER 1.20, KH 522 PROTOCOL” B: Eight (8) byte message string. (Consist of first eight bytes received over the bus, regardless of message length in excess of eight.) ?: One or more of the following ASCII messages: “DATA ERROR”...

  • Page 66: What's Wrong Request, ("?")

    The following sample programs are intended as guides to help you program this calibrator. NOTE: the 526 (522 Protocol mode) should see an eight, (8) character word for correct programming. It will act on the first 8 bytes. The unit must receive an end of message terminator to act on the message.

  • Page 67: Ieee-488 Addressing

    100 T$=CHR$(13) 110 OPEN5,5 120 WRT7XX,A$; CHR$(13):REM-OR WRT7XX,"T123456R";CHR$(13); 130 CLOSE5 135 PRINT"INPUT COMPLETE":PRINT"":PRINT"" 140 PRINT"TO ENTER MORE DATA, PRESS SPACE BAR":PRINT"" 150 GETX$:IFX$=""THEN150 160 GOTO5 4.2.8 IEEE-488 Addressing Address Setting: Refer to paragraph 3.3.2 to set the address of the 526.
  • Page 68 Section 4 - Model 520/521/522 GPIB Remote Programming Emulation NOTES _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________...

  • Page 69: Analogic/Data Precision Protocol

    Sending an "L" at any time, pressing [LOCAL] or turning the unit off/on, will return the 526 to the local mode. Character strings are all ASCII. Parity bit is ignored. Once a V or A is received, the string must conform to the Analog/DP 8200 protocol.

  • Page 70: 8200 Protocol Programming Examples

    Table 5.1 - Table of Character String Syntax Out of range values will be ignored and do not cause a zero output. The 526 will also respond to a *IDN? as in the KH 526 Protocol.

  • Page 71: Address Setting

    Address Setting (refer to paragraph 3.3.2 to set the address of the 526) When addressed to listen, and when sent a character, the 526 will assume REMOTE operation status. All front panel controls, with the exception of [LOCAL] will no longer respond. The 526 will retain its previous output setting until receipt of a valid character or string as described in the table below.
  • Page 72 Section 5 - Model 8200 GPIB Remote Programming Emulation NOTES _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________...

  • Page 73: Section 6.0 Lan (Local Area Network) Operation

    526 to the network card of the computer. Connect the 526 directly to the network first and then power it on. After a moment, your computer should assign an IP address to the Model 526, if it is set to obtain IP addresses automatically (default setting).
  • Page 74 Section 6 - LAN (Local Area Network) Operation Upon starting the program, the following window, Figure 4.1, displays. Click Run. The program displays its main window, Figure 6.2. Figure 6.1 - Windows XP Security Window The window shown in Figure 6.2 is the opening window for the LANScan program. Figure 6.2 - Opening LanScan Window In this example, the computer running the LANScan program has an IP address of 192.168.1.103.

  • Page 75: Setting A Fixed Ip Address

    Figure 6.3 - LanScan Search Result In this example, there is one 526 with an IP Address of 192.168.1.117. If more than one 526 is on the network, you can use the MAC Address to identify the calibrator of interest. See Section 2, Paragraph 2.7.1.1 of this manual for instructions on displaying the MAC Address on the front panel.
  • Page 76 Section 6 - LAN (Local Area Network) Operation After the Security box information has been entered, the Device Server Configuration Manager will display (see Figure 6.5). Figure 6.5 - Device Server Configuration Manager On the main menu in the left side of the window, click Network (highlighted in red above) and the following page will display.
  • Page 77 Enter the IP address, Subnet mask and Default gateway (the gateway parameter is optional) you want to assign to the 526. Typical subnet for most local networks would be (255.255.255.0). Then click "OK" (highlighted in red below) at the bottom of the window.

  • Page 78: Lan And Hyperterminal Setup

    When connecting the 526 to a network or computer directly, check the communication port setting of the 526 (Section 2.7.2, Menu Item 2). If not, change the setting for LAN operation. In order to use the Krohn-Hite Model 526 with LAN, you must decide if the connection is made through a network or direct. A...
  • Page 79 Communications should now be available. Now verify that the communications is established by typing in “*IDN?” and press enter. If there is communication, the Model 526 will return the installed firmware version string, as follows: KROHN-HITE 526, VER 1.2, KH526 PROTOCOL...
  • Page 80 Section 6 - LAN (Local Area Network) Operation NOTES _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________...

  • Page 81: Section 7.0 Incoming Acceptance

    For peak performance when the 526 is moved to a new location, allow the 526 to acclimate to its environment for 1 to 2 hours. If the 526 has been off for an extended period of time, allow 2 hours for the internal temperatures to stabilize and achieve maximum performance.

  • Page 82: Verification Procedure

    [NPLC 200], integration time of 200 power line cycles; [NDIG8], 8.5 digits. Note: The longer integration time reduces measurement noise and increases resolution. Set the 526 to the following ranges/voltages from Table 4.1 below. Readings should be within the Meter Readings Limits.

  • Page 83: Output Current Checks (Using Pcr100 Precision Resistor)

    7.5.2 Output Current Checks (using PCR100 Precision Resistor) Proper connections that need to be made between the Multimeter, Model 526 and the Precision 100 Resistor in order to limit thermal errors. Cable sets CAB023 or CAB024 are recommended. Connect the 526 Output terminals, using low thermal cables, to the 100 ohm current resistor.
  • Page 84 Section 7 - Incoming Inspection NOTES _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________...
  • Page 85 Krohn-Hite Corporation 15 Jonathan Drive, Unit 4 Brockton, MA 02301 Tel: 508-580-1660; Fax: 508-583-8989 email: sales@krohn-hite.com Copyright 2012 Krohn-Hite Corporation U.S.A. Published: 6/2012 Revision: 3.0...

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