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3302C Series Mainframe Operation Manual 4-1

Chapter 4 GPIB/RS-232 programming operation

4.1 Introduction

The rear panel GPIB/RS-232 interface of 3302C mainframe is designed to connect
PC (Personal Computer) or NOTEBOOK PC with GPIB/RS-232 interface, the
NOTEBOOK PC acts as a remote controller of 3250A/3310A/3310C/3330A and
3320 series Electronic Load.
This feature can be used as an automatic load/cross load regulation and centering
voltage testing for a switching power supply or a rechargeable battery
charge/discharge characteristic testing. The function capability of rear panel
GPIB/RS-232 interface not only can set the load level and.

4.2 The summary of RS-232 interface and command

The following RS-232 commands are same as GPIB commands. The RS-232
protocol in 3302C mainframe is listing below:
Baud-rate

：

9600

Parity

：

none

Data bit

：

8 bits

Stop bit

：

1 bit

command delay time

：

20 mSec.

The connection of rear panel RS-232 interface is shown below, The Figure 4-1.a is
connector wire diagram of rear panel RS-232 interface, User can use the general
RS-232 cable as Figure 4-1.b.

TxD

RxD

RTS

CTS

TxD

RxD

RTS

CTS

Figure 4-1.a

TxD
RxD
RTS
CTS
DSR
GND
DCD
DTR

2
3
4
5
6
7
8

Figure 4-1.b

Inside of 3300C Mainframe

RS232C port on

3300C Mainframe

RS232C port on PC

9

Fig 4-1 Rs-232 INTERFACE DIAGRAM

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Содержание 3300C Series

Страница 1: ...3302C Mainframe Operation Manual P N 90033024 REV G...

Страница 2: ...s that the concentration of the hazardous substance in all homogeneous materials in the parts is below the relevant threshold of the SJ T 113632006 standard SJ T 11363 2006 Indicates that the concentr...

Страница 3: ...nframe operation 3 1 3 1 Power switch 3 1 3 2 Power on status 3 2 3 3 STORE RECALL operation 3 3 3 4 AUTO SEQUENCE testing function description 3 4 Chapter 4 GPIB RS 232 programming operation 4 1 4 1...

Страница 4: ...W CHART 3 5 Fig 3 5 TEST MODE OPERATION FLOW CHART 3 6 Fig 4 1 Rs 232 INTERFACE DIAGRAM 4 1 Tables Table 1 1 3250A 3310A 3310C 3330A and 3320 SERIES SIMPLE SPECIFICATION LIST 1 1 Table 1 2 SPECIFICATI...

Страница 5: ...60 Vrms 300 W 3251A 8 Arms 150 Vrms 300 W 3252A 4 Arms 300 Vrms 300 W 3253 1Arms 300 Vrms 300 W 3310C 30A 60V 150W 3311C 60A 60V 300W 3312C 10A 250V 300W 3314C 5A 500V 200W 3315C 15A 60V 75W 3310A 30...

Страница 6: ...ace 1 1 4 The analog programming BNC input on the rear panel can control the load module s load current with an arbitrary waveforms 1 1 5 Built in GPIB interface GPIB address can control electronic lo...

Страница 7: ...inframe and others are for load module The 3302C mainframe is optically isolated with load module POWER SUPPLY POWER SUPPLY ISO I O 3250 3310A 3310C 3330A and 3320 SERIES MODULAR PLUG IN LOAD SYSTEM C...

Страница 8: ...ine voltage selection and fuse type 2 2 Check line voltage The 3302C mainframe and 3250A 3310A 3310C 3330A 3320 series electronic load can operation with 100 115 200 230Vac input as indicated on the l...

Страница 9: ...2 AC LINE RECEPTACLE 2 3 Grounding requirements Model 3302C mainframe and 3250A 3310A 3310C 3330A 3320 series Plug in load is equipped with three conductor cable which plugs in an appropriate recepta...

Страница 10: ...GPIB connection The GPIB connector on the rear panel connects the 3302C mainframe to the controller and to other GPIB devices An GPIB system can be connected in any configuration star linear or both a...

Страница 11: ...within 3302C mainframe The Remote output port can connect to another 3302C 3300A or 3302 mainframe for cascade operation this feature enable user to control up to 12 or more load module in a one memor...

Страница 12: ...Power switch Before connecting AC power to the 3302C mainframe make sure the power source matches the power requirements of the 3302C Electronic load mainframe as mark on the rear panel Power switch t...

Страница 13: ...10A 3310C 3330A and 3320 series electronic load is in power up initial state please refer to electronic load module s operation manual 3 2 4 GPIB address setting GPIB address is set by press STATE 4 S...

Страница 14: ...ored into the EEROM memory this time then the STORE LED annunciator turns to OFF it means the STORE procedure is completed Note After press the STORE key the STORE LED annunciator will flash for 20 se...

Страница 15: ...ere are two modes in AUTO SEQUENCE function EDIT MODE and TEST MODE The AUTO SEQ mode can be entered by press S3 S4 key simultaneously then press STORE key again to enter the EDIT MODE or press START...

Страница 16: ...st step sequence can be up to 16 step and can be terminated by press EXIT key if less than 16 step is required S3 S4 Show n1 n9 Store Mode 1 Press S3 S4 key 2 Show AUTO SEQ No 1 No 9 Press Up Down key...

Страница 17: ...here is at least one failure during the test 3 4 2 4 User can press Start key to continue another test or the 3302C can quit from Auto Sequence mode by press EXIT key S3 S4 Show n1 n9 Start Mode 1 Pre...

Страница 18: ...The function capability of rear panel GPIB RS 232 interface not only can set the load level and 4 2 The summary of RS 232 interface and command The following RS 232 commands are same as GPIB commands...

Страница 19: ...SP NR2 NL 9 PRESet CR A B SP NR2 NL 9 PRESet LIN A B SP NR2 NL 9 PRESet CR HIGH LOW SP NR2 NL 9 9 PRESet CV HIGH LOW SP NR2 NL 9 9 PRESet CV SP NR2 NL 9 PRESet TCONFIG SP NORMAL OCP OPP NL 9 PRESet T...

Страница 20: ...Set LDOFfv NL 9 9 PRESet CC NL 9 9 PRESet CC A B NL 9 PRESet CC HIGH LOW NL 9 9 9 PRESet CP HIGH LOW NL 9 PRESet CR NL 9 PRESet CR A B NL 9 PRESet LIN A B NL 9 PRESet CR HIGH LOW NL 9 9 9 PRESet CV HI...

Страница 21: ...t SP ON OFF NL 9 9 9 9 9 STATe SHORt NL 9 9 9 9 9 0 OFF 1 ON STATe PRESet SP ON OFF NL 9 9 9 STATe PRESe NL 9 9 9 9 0 OFF 1 ON STATe SENSe SP ON OFF NL 9 9 9 9 STATe SENSe NL 9 9 9 0 OFF 1 ON STATe RA...

Страница 22: ...later Function is available in 3333A REV 3 17 or later Function is available in 3334A REV 3 17 or later System command Available for all modules COMMAND NOTE RETURN SYStem RECall SP m n NL M 1 5 n 1 3...

Страница 23: ...016V 3311A Resolution 0 6A 60A 1 5mA 15mA 0 05 1 4k 0 25m 0 25m 0V 60V 0 015V 3312C Resolution 0 1A 10A 0 266mA 2 66mA 1 333 25 18 75k 6 666m 0 053mS 0V 250V 0 0666V 3312A Resolution 0 1A 10A 0 25mA 2...

Страница 24: ...example A B means it can only use A or B as the command it can choose only one as the setting command Terminator You have to send the program line terminator character after send the GPIB command the...

Страница 25: ...ammed HIGH and LOW level is 10 times of resolution at each range the 3310 series Electronic Load will adjust and limit of the programmed values If the programmed HIGH level is equal or less than LOW l...

Страница 26: ...H and LOW level is 10 times of resolution at each range the 3310 series Electronic Load will adjust and limit of the programmed values If the programmed HIGH level is equal or less than LOW level the...

Страница 27: ...ectronic Load will adjust and limit of the programmed values If the programmed HIGH level is equal or less than LOW level the 3310 series load module will adjust and limit HIGH level to be higher 10 t...

Страница 28: ...LDON command the adjust range is 0 1 25 0 V Res 0 1V the load on voltage setting for CH A and CH B is the same setting The load will start to sink current if power source output voltage is higher tha...

Страница 29: ...i function meter to display the programming load level Command syntax PRES SP 0 1 OFF ON NL Description PRES ON is set the load module in the 3302C mainframe to preset on status MODE CC CR CV LIN CP P...

Страница 30: ...ule s load status and load current into the EEPROM memory in the 3330A and 3310C series electronic load For Example STORE 1 store the 3250A 3310A and 3320 series electronic load module s load status a...

Страница 31: ...e Command syntax WATT SP 0 1 OFF ON NL Description This command is to set the display of power meter This command has to be used in conjunction with PRES OFF When setting to ON the monitor on the top...

Страница 32: ...P F 0 85 P F 0 80 P F 0 75 P F 0 70 P F 0 65 C F 2 5 7 P F 0 70 P F 0 65 P F 0 60 P F 0 50 P F 0 40 C F 3 5 8 P F 0 50 P F 0 45 P F 0 40 P F 0 35 P F 0 30 SQUARE WAVE 9 1 0 1 1 1 2 1 3 1 4 DC 10 2dc 2...

Страница 33: ...lower limit value of threshold voltage Command syntax LIM VOLT HIGH LOW SP NR2 NL Description This command is to set the upper lower limit value of threshold voltage When input voltage is lower than...

Страница 34: ...limit value of threshold power VA When power VA is lower than this lower limit value or higher than the upper limit Value NG indicating light will come on to indicate NO GOOD For Example LIM VA LOW 0...

Страница 35: ...RISE SP NR2 NL Description The RISE load current slew rate of load level change or dynamic load can be programmed by RISE command The RISE slew rate of 3310 series Electronic Load module can be fully...

Страница 36: ...te after programming the FALL command The engineering unit for FALL slew rate is A us For Example FALL 0 124 set FALL slew rate to 0 124 A us SLEW Rate Purpose Set the load current slew rate of 3330A...

Страница 37: ...Electronic load Command syntax SENS SP 0 1 OFF ON NL Description This command applies to V sense the input of the Electronic load For Example SENS ON set the load module V sense input to sense ON stat...

Страница 38: ...olarity load in a module it can be two positive or two negative load During the parallel Loading operation the load level and status of CH A and B is still independent Only the current meter shows the...

Страница 39: ...the 3320 series electronic load module through 3302C mainframe Send the NAME command before programming other GPIB command Description The configuration of 3302C mainframe is 3320 NAME 3320 DUAL Purpo...

Страница 40: ...er Function is available in 3330A REV 3 17 or later Function is available in 3331A REV 3 17 or later Function is available in 3332A REV 3 17 or later Function is available in 3333A REV 3 17 or later F...

Страница 41: ...r than V th during OPP test TCONFIG NORMAL OCP OVP OPP suitable for 3310C 3330A series Command syntax TCONFIG SP NORMAL OCP OVPO OPP NL Description There are 3 usefue test mode con be set normal mode...

Страница 42: ...d syntax CR HIGH LOW NL CR A B NL CR NL Description RES LOW return the presently programmed low load resistance level in Constant Resistance mode of 3310 series electronic load module RES return the p...

Страница 43: ...shown in Table 4 2 the engineering unit is W LOAD ON OFF Purpose LOAD ON or LOAD OFF status query command Command syntax LOAD NL Description LOAD return the presently load status 0 indicates LOAD OFF...

Страница 44: ...icates PRESet OFF and 1 indicates PRESet ON MODE Purpose CC CR CV LIN or CP operating mode query command Command syntax MODE NL Description MODE return the presently operating mode status 0 indicates...

Страница 45: ...ction status events from all status register Table 4 6 describes the status byte the happened on the 3250A 3310 series Electronic load The PROT status byte register is cleared when a CLR command clear...

Страница 46: ...the presently 4 1 2 digital voltage meter reading The returned data format is shown in Table 4 2 the engineering unit is V CURRENT METER Purpose The reading of 4 1 2 digit current meter read back quer...

Страница 47: ...OFF Purpose To read the setting condition of SYNC Command syntax SYNC NL Description SYNC Read back the condition of SYNC 0 denotes OFF 1 denotes ON SENSE ON OFF Purpose To read the setting condition...

Страница 48: ...nd syntax WAVE NL Description WAVE Read back the set value of WAVE 0 4 denotes the C F setting of level 1 level 5 FREQUENCY Purpose To read the set frequency of FREQ Command syntax FREQ NL Description...

Страница 49: ...er unit is W VA Limit Purpose To read the set value of upper lower limit value of threshold power VA Command syntax LIM VA HIGH LOW NL Description LIM VA LOW Read back the lower limit set value of thr...

Страница 50: ...uery command Command syntax RISE NL Description RISE return the presently programmed low load current level in Constant Current mode The returned data format is shown in Table 4 2 the engineering unit...

Страница 51: ...n the presently DYNamic ON or OFF status 0 indicates static load mode or DYNamic OFF and 1 indicates DYNamic load mode or DYNamic ON RANGE I II Purpose RANGE I or RANGE II status query command Command...

Страница 52: ...the decl h HEADER FILE to C LANGUAGE include stdio h include dos h include math h include decl h NI GPIB CARD HEADER FILE main char ouster 20 rdbuf 15 spec 10 int i ch load Assign unique identifier to...

Страница 53: ...tring buffer ibrd load spec 20 if spec 3 9 printf n 3302C series specification error Set the channel 1 preset off current sink 1 0 amps and load on commands to the load ibwrt load chan 1 pres off cc l...

Страница 54: ...185 REM 190 REM Get the 3310 series module load specification 195 REM 200 wrt NAME CALL ibwrt load wrt 210 rd space 20 CALL ibrd load rd 215 REM 220 REM Set the channel 1 preset off current sink 1 0 a...

Страница 55: ...int ACE_INT_IDENT_REG ACIA interrupt identification register int ACE_LINE_CTL_REG ACIA line control register int ACE_MODEM_CTL_REG ACIA modem control register int ACE_LINE_STAT_REG ACIA line status re...

Страница 56: ...define THRE 0x20 transmit holding reg empty 3302C series elec load command sets int pd_wrt char wrtbuf int count static char combuf COMPTR CHAN CURR HIGH CURR LOW RES HIGH RES LOW VOLT HIGH VOLT LOW P...

Страница 57: ...t strcspn intbuf if t count t count 1 for cnt 0 cnt t cnt tempbuf cnt intbuf cnt strupr tempbuf strupr intbuf cnt 0 do comerr strncmp tempbuf combuf cnt t cnt cnt while cnt COMPTR comerr 0 if comerr...

Страница 58: ...sult 0 for cnt 0 cnt count cnt intbuf cnt tempbuf cnt return result return OPER_ERR int pd_rd char buf int count char ch int cnt 0 do ch queue cnt buf ch cnt cnt buf buf while ch n cnt count buf 0 que...

Страница 59: ...b ACE_DATA_REG read the data register to empty it break case 0 break case 2 break case 4 read character from data register ch1 inportb ACE_DATA_REG temp_index input_index 1 increment index of input bu...

Страница 60: ...ask for IRQ3 11110111 else initial communication port 1 ACE_DATA_REG 0x3f8 ACE_INT_ENB_REG 0x3f9 ACE_INT_IDENT_REG 0x3fa ACE_LINE_CTL_REG 0x3fb ACE_MODEM_CTL_REG 0x3fc ACE_LINE_STAT_REG 0x3fd ACE_MODE...

Страница 61: ...wrtbuf cnt 6 cnt cnt while cnt 10 measerr 0 if measerr 0 result SUCCESS if strncmp measbuf CURR 4 0 ch measbuf 5 switch ch case 1 pd_wrt chan 1 6 pd_wrt meas curr 10 pd_rd rdmbuf rdmcnt strncat tmpbuf...

Страница 62: ...d_wrt meas volt 10 pd_rd rdmbuf rdmcnt strncat tmpbuf chanbuf 1 pd_wrt tmpbuf 6 break case 2 pd_wrt chan 2 6 pd_wrt meas volt 10 pd_rd rdmbuf rdmcnt strncat tmpbuf chanbuf 1 pd_wrt tmpbuf 6 break case...

Страница 63: ...ter outportb ACE_MODEM_CTL_REG 0xb set RTS DTR to enable modem and turn on OUT2 to enable the 8250 s IRQ interrupt to system void pd_loc void char ch outportb ACE_INT_ENB_REG 0 disable all 8250 interr...

Страница 64: ...do Set the channel 1 preset off current sink 1 0 amps and load on commands to the load pd_wrt chan 1 6 delay 200 pd_wrt pres off 8 delay 200 pd_wrt curr low 0 0 12 delay 200 pd_wrt curr high 1 0 13 de...

Страница 65: ...atus setting procedures of each 3250 series load module START SET to LEV A or B AC or DC AC DC SET FREQ NR2 SYNC ON OFF BANK m SET FREQ 0 1 SYNC ON OFF MODE CC CC SET CR MODE CR SET MODE CC WAVE n CUR...

Страница 66: ...STA or DYN DYN OFF LOW LEVEL HIGH or LOW LEVEL CURR HIGH NR2 CURR LOW NR2 FALL NR2 PERD HIGH NR2 SET DYN ON RISE NR2 PERD LOW NR2 CURR HIGH NR2 CURR LOW NR2 FALL NR2 PERD HIGH NR2 HIGH or LOW LEVEL H...

Страница 67: ...Manual D 1 Appendix D 3310A Series GPIB RS 232 Operating flow chart The following flow chart shows the typical 3302C Series mainframe remote control and load current level and status setting procedure...

Страница 68: ...CHA or CHB SET CHA or CHB SET CHA or CHB SET CHA or CHB SET SHOR ON OFF SET DYN STA SET LOAD ON OFF SET MODE SET CONF SET DYN Setting SET LIMIT SET PRES ON OFF Mode CC Mode CR Mode CV No No SET SET S...

Страница 69: ...2 Operating flow chart The following flow chart shows the typical 3302C Series mainframe remote control and load current level and status setting procedures of each 3320 series load module START SET S...

Страница 70: ...E NR2 FALL NR2 PERD HIGH PERD LOW HIGH or LOW LOW SET LEV LOW RES HIGH J RES LOW NR2 SET LEV HIGH RES LOW I RES HIGH NR2 HIG HIGH or LOW LOW SET LEV LOW RES HIGH L RES LOW NR2 SET LEV HIGH RES LOW K R...

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