Chroma 6404 User Manual
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Chroma 6404 User Manual

Programmable ac source
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Summary of Contents for Chroma 6404

  • Page 3 Programmable AC Source 6404/6408 User’s Manual Version 1.6 November 2015 P/N A11 000020...
  • Page 4 The information in this document is subject to change without notice. Chroma ATE INC. makes no warranty of any kind with regard to this manual, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.
  • Page 5 All of Chroma’s instruments are warranted against defects in material and workmanship for a period of one year from date of shipment. Chroma agrees to repair or replace any assembly or component found to be defective, under normal use during this period.
  • Page 6 Material Contents Declaration The recycling label shown on the product indicates the Hazardous Substances contained in the product as the table listed below. : See <Table 1>. : See <Table 2>. <Table 1> Hazardous Substances Lead Mercury Cadmiu Hexavalent Polybrominate Polybromodiphen Part Name Chromium...
  • Page 7 “” indicates that the level of the specified chemical substance exceeds the threshold level specified in the standards of SJ/T-11363-2006 and EU 2005/618/EC. Chroma is not fully transitioned to lead-free solder assembly at this moment; however, most of the components used are RoHS compliant.
  • Page 8 “Specifications” under “Product Overview” chapter . Jun. 2014 Add “Declaration of Conformity.” Modify the input voltage specificaitons of Model 6404 and 6408. Modify the front and rear panel figures and descriptions in the section of “Operational Panels.” Nov. 2015 1.6...

  • Page 9: Table Of Contents

    Programmable AC Source 6404/6408 User’s Manual Table of Contents Product Overview ....................1-1 Introduction ......................1-1 Key Features ...................... 1-1 Specifications ..................... 1-2 Operational Panels ..................... 1-4 1.4.1 Front Panel .................... 1-4 1.4.2 Rear Panel .................... 1-6 Installation ......................2-1 Inspection ......................
  • Page 10 Programmable AC Source 6404/6408 User’s Manual Self-test Routine ....................5-1 Troubleshooting ....................5-1 Remote Operation ....................6-1 General Information .................... 6-1 GPIB Capability of the AC Source ..............6-1 Introduction to Programming ................6-1 6.3.1 Conventions................... 6-1 6.3.2 Numerical Data Formats ................ 6-2 6.3.3...

  • Page 11: Product Overview

    PWM (Pulse Width Modulation) approach of the power stage allows for full volt—ampere and current rating into loads. The 6408 can supply up to 800 VA, the 6404, up to 375 VA. The accurate DSP (Digital Signal Processing) measurement capabilities provide independent verification of operating values, thus reducing the need for external measuring instruments.

  • Page 12: Specifications

    Programmable AC Source 6404/6408 User’s Manual 1.3 Specifications The operation specifications of the model 6404/6408 are listed in this section. All specifications are tested according to standard Chroma test procedures. (All specifications are based on 25±1°C resistor load unless specified otherwise).
  • Page 13 Product Overview SAFETY REQUIREMENT Meet IEC 1010-1, UL 1244 EMI REQUIREMENT FCC 15J class A PROTECTION UVP, OCP, SHT, OPP, OTP, FAN OTHERS Size (WXHXD) 483X134X468 mm Weight 18 Kg 23 Kg 23 Kg Temperature Range Operation 0 to + 40°C Storage –...

  • Page 14: Operational Panels

    PC to front panel keypad. OUT/QUIT command key: Under normal operation, presses of OUT/QUIT this key may enable the 6404/6408 outputs power to the -------- or --------- loading devices. If the user enters setup procedures, this key is EXT PROG used to quit from current setting routine.
  • Page 15 Product Overview Shift mode selection key: Press this key switches the SHIFT 6404/6408 from the normal operational mode to the shift mode, or from shift back to normal. Numeric and decimal keys: Under normal mode, the user 1 to 9 , 0 can program numeric data using the digital keys and the and ...

  • Page 16: Rear Panel

    1.4.2 Rear Panel Item Name Description Product Label The model number 6404 or 6408 and power line input ratings are marked on the label. Power Line Input Power line input is connected to the 6404/6408 through this Connector connector. Cooling Fan Cooling fan speed automatically increases or decreases as temperature rises or falls.

  • Page 17: Installation

    The input power inlets are located on the rear panel of the instrument. Refer to Figure 2-1. Input of the 6404/6408 must be connected from a three-wire single phase AC power outlet. The power line input must have a current rating greater than or equal to the instrument fuse current rating.
  • Page 18 Programmable AC Source 6404/6408 User’s Manual Figure 2-1 Input Connections Figure 2-2 Output Connections Figure 2-3 Output Connections...

  • Page 19: Output Connection

    CPU and DSP communication test failure. After the self-test routines are completed the LEDs turn to show the current setting values of V and F, and measured value of I, indicating the 6404/6408 is ready for use as below: 0.0 60.0 0.00...

  • Page 20: I/O Connectors (Option)

    Programmable AC Source 6404/6408 User’s Manual Before the instrument is turned on, all protective earth terminals, WARNING extension cords, and devices connected to the instrument should be connected to a protective earth ground. Any interruption of the protective earth grounding will cause a potential shock hazard that could result in personal injury.

  • Page 21: Local Operation

    3.2.1 GPIB address The 6404/6408 offers remote operation mode. For details, refer to Remote Operation to the 6404/6408 in Section 6. Prior to operating remotely, the user has to set GPIB address as following: For example, set GPIB address as 25.

  • Page 22: Rs-232C

    “nonE”, “EVEn”, and “odd”. 3.2.3 OVP The user is allowed to set limitation for output voltage, the 6404/6408 will then output power with the voltage never exceeding the user-defined upper limit to protect the loading devices. Example: Set upper limit of output voltage to be 120V.

  • Page 23: Sound (On/Off)

    OUT/QUIT again to exit from setup. Default limit is 300V. 3.2.4 Sound (ON/OFF) The 6404/6408 offers the user selection of beep sounds while programming using keypad or turning . Default setting is “ON”, to disable it, the user can do as below:...

  • Page 24: Power On Status

    3.2.6 Power on status The 6404/6408 offers the user to set up the parameters of range, V and F when the power switch is on. Example: Set the power on status to be 230V, 50Hz.

  • Page 25: I Limit

    0 to 20 in step of 0.08 A for 6408, and from 0 to 10 in step of 0.04 A for 6404. Operational example for defining I limit = 8 A is interpreted as below.

  • Page 26: Output V & F

    3.4 Save & Recall The 6404/6408 AC Source offers nine memory channels for the user to save a set of frequently used V, F, and V full range, and to recall them for later use.

  • Page 27: Data Lock

    0 key, to turn off the “LOCK” LED. 3.6 Ext Prog The 6404/6408 AC source allows the user to use an external DC voltage level as a linear control reference for output Vrms. The relationship of Vout and the Vref is listed as following: Vout = Vref ÷...

  • Page 28: Measurement

    Programmable AC Source 6404/6408 User’s Manual 3.7 Measurement The 6404/6408 can measure actual performance V, F, I, P, PF, and CF of the Load connected to it without using extra measurement instrument when the 6404/6408 AC source outputs power to the load. During operation, V and F measurement data are always shown on the LEDs at the left and the middle zone.

  • Page 29: Protection

    Local Operation During remote operation, the 6404/6408 is controlled by a remote GPIB or RS-232C controller, and the green indicator LED of “RMT” remains turned on. To return from remote to front panel operation, press the Local key. When in “SHIFT” mode, the user needs to press SHIFT key to return to normal mode before pressing Local key.

  • Page 31: Theory Of Operation

    Theory of Operation Theory of Operation 4.1 General The 6404/6408 AC power source consists of 8 main boards and other discrete components. Each has its specific function that will be described in the sections followed. 4.2 Overall System Description Figure 4-1 shows the overall system blocks. Main power flows through the A/D, D/A power stage converter.

  • Page 32: Ac/Dc Power Stage Converter

    Programmable AC Source 6404/6408 User’s Manual Output Input Power Power Power Power Stage O Board EMI Filter Stage FAN speed Power control Supply I Board P Board control Vmeas. B Board Imeas. Data & Control bus Seven-Segment A Board D Board LED Display Data &...

  • Page 33: Cpu

    Theory of Operation 4.5 CPU The CPU, A board, uses a 64180 CPU to control the circuit. A microprocessor circuit accepts commands from the GPIB or RS-232C controller, or from the front panel keyboard. It sends digital programming information to DSP controller to set the output parameters of the power source.

  • Page 35: Self-Test And Troubleshooting

    5.2 Self-test Routine The 6404/6408 AC Power source has a built-in test/adjust program for the user to test/adjust the unit. Do not adjust any component without prior approval. Consult the distributor for information on adjustments.
  • Page 36 Programmable AC Source 6404/6408 User’s Manual Problem Reason Solution Poor Voltage HIGH or LOW line of output Isolate output line from case. Accuracy voltage maybe shorted to the case ground. Poor measurement of Aging of components results in Refer to service manual for V, I, P deviation of characteristics.

  • Page 37: Remote Operation

    Remote Operation Remote Operation 6.1 General Information The AC source can be remotely controlled through the GPIB or the RS-232 interface. For RS-232 interface, only the TXD, RXD, RTS, CTS signals is used for data transfer. 6.2 GPIB Capability of the AC Source GPIB Capability Description Interface...

  • Page 38: Numerical Data Formats

    Programmable AC Source 6404/6408 User’s Manual that :STATe may be omitted. 6.3.2 Numerical Data Formats Formats: The 6404/6408 AC Source accepts numeric data of the following formats: Symbol Description Example Digits with no decimal point. The decimal point is 123, 0123 assumed to be to the right of the least-significant digit.

  • Page 39: Character Data Format

    Remote Operation 6.3.4 Character Data Format The character strings returned by query command may take either of the following forms: <CRD> Character Response Data: character string with maximum length of 12. <SRD> String Response Data: character string enclosed in double quotes. 6.3.5 Basic Definition Command Tree Table:...

  • Page 40: Traversal Of The Command Tree

    Programmable AC Source 6404/6408 User’s Manual A program message terminator terminates a program message. Three permitted terminators are: (1) <END>: end or identify (EOI). (2) <NL>: new line, which is a single ASCII-encoded byte 0A (10 decimal). (3) <NL><END>: new line with EOI.
  • Page 41 Remote Operation [:REAL]? Returns output real power :PFACtor? Returns output power factor :VOLTage :AC? Returns output ac rms voltage OUTPut [:STATe] <Boolean> Enables/Disables output :PROTection :CLEar Cause the latched protection to be cleared [SOURce:] CURRent :PEAK [:IMMediate] <NRf+> Sets output peak current limit FREQuency [:CW|:FIXed] <NRf+>...

  • Page 42: Command Dictionary

    Programmable AC Source 6404/6408 User’s Manual *TST? Perform self-test, then return result *WAI Wait-to-continue 6.5.2 Command Dictionary MEASure:CURRent:AC? FETCh:CURRent:AC? Description: These queries return the output ac rms current. It is noted that there are two kinds of commands to get measurement data. MEASure commands make a new measurement and return measurement data.
  • Page 43 CURRent:PEAK Description: This command sets the output peak current. Syntax: [SOURce:]CURRent:PEAK[:IMMediate] <NRf+> Parameters: 0 to 10 for 6404, 0 to 20 for 6408 *RST Value: 10 for 6404, 20 for 6408 Example: CURR:PEAK 15 sets the output peak current to 15A.
  • Page 44 Programmable AC Source 6404/6408 User’s Manual VOLTage Description: This command sets the ac rms output voltage amplitude. The maximum value is dependent on voltage range and voltage limit setting. Syntax: [SOURce:]VOLTage[:LEVel][:IMMediate][:AMPLitude] <NRf+> Parameters: 0 to 300 *RST Value: 0 Example: VOLT 110 sets the ac rms output voltage to 110V.
  • Page 45 Remote Operation Parameters: 0 | 1 | OFF | ON *RST Value: OFF Example: VOLT:RANG:AUTO ON enables the AUTO output voltage range mode. Query Syntax: [SOURce:]VOLTage:RANGe:AUTO? Return Parameters: 0 | 1 Query Example: VOLT:RANG:AUTO? returns the condition of AUTO range mode. STATus:PRESet Description: This command sets the PTR, NTR and Enable registers of Questionable and Operation status as follow: all defined bits of PTR register to 1, all bits of NTR...
  • Page 46 Programmable AC Source 6404/6408 User’s Manual Return Parameters: <NR1> Query Example: STAT:QUES? returns and clears the Questionable Event register. STATus:QUEStionable:CONDition? Description: Returns the content of the Questionable Condition register. The Condition register reflects the TRUE or FALSE state of Questionable status.
  • Page 47 Remote Operation Parameters: None Example: SYST:LOC sets the ac source to local state. SYSTem:REMote Description: Sets the ac source to remote state, which disables the front panel controls except the local key. Pressing the local key while in the remote state returns the ac source to the local state.
  • Page 48 Programmable AC Source 6404/6408 User’s Manual Query Syntax: *ESR? Parameters: None Return Parameters: <NR1> Query Example: *ESR? returns the content of ESR. *IDN?, Identification Query Description: This query returns ASCII string which organized into four fields separated by commas to identify the ac source.
  • Page 49 Remote Operation Query Example: *SRE? returns the content of SRE. *STB?, Read Status Byte Query Description: This query returns the Status Byte register (STB). The status byte can be read with either a serial poll or the *STB? Common query. If it is read with a serial poll, the RQS bit is sent for the bit 6 position and then cleared.
  • Page 50 66 Huaya 1st Road, Guishan, Taoyuan 33383, Taiwan 台灣桃園市 33383 龜山區 華亞一路 66 號 T +886-3-327-9999 F +886-3-327-8898 Mail: info@chromaate.com http://www.chromaate.com Copyright by CHROMA ATE INC. All Rights Reserved. All other trade names referenced are the properties of their respective companies.

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