同一个接触器或继电器的触点往往会出现在不同页的原理图中，因为在AutoCAD中无法产生相互关联参考，所以在原理图上容易产生线圈和触点的遗漏，触点的标注会产生错误或重复，造成元件的选型和设计的不符；

　　电气线路中所有元件的连线和文本的标注都必须手动完成；

　　元器件的选型、材料清单、控制柜内元件的布置需要借助Excel或AutoCAD手动完成，因而造成元器件型号漏选和尺寸错误等问题；

元器件的位置号、用途等说明无法导出供软件编制或显示系统设计时使用。

　　由于存在着上述种种问题，所以在整个设计过程中必须花费大量的时间来进行图纸的审核和校对。

　　电气设计软件的特点

　　基于图形的软件在电气控制系统设计中的缺陷，主要在于它无法描述电气控制系统内在的逻辑关系。

　　一个真正的电气设计软件应该具有以下特点：

　　面向电气系统，而不是面向电气图纸：这是电气设计软件和一般机械设计软件的根本区别。电气设计软件基于数据块，描述电气元器件之间的连接关系以及互参照关系。

　　丰富的页码编号系统，能够满足各种规模项目的需求：和机械图纸不同，电气图纸都是由多页图纸组成，对不同类型和规模的项目，应该采用适合的页码编号系统，页码编号系统直接关系到元器件的编号和互参照。

Mitutoyo 982-551 Digital Tachometer
WIKA S-10 PRESSURE TRANSMITTER 0-10000 PSI
HP 8495H 70dB ATTENUATOR
COMPLIANCE WEST HT-2800P DIELECTRIC WITHSTAND TESTER
K&L MICROWAVE WSA-00045 DUAL BAND DUPLEXER
ENDEVCO 2228C ACCELEROMETER
HP 779D DIRECTIONAL COUPLER
GE Type D0-91 DC Volts Panel Meter **AS IS**
STANFORD RESEARCH SR650 DUAL CHANNEL FILTER
SE 784EC 6" Electronic Digital Caliper
DICKSON KT856 REMOTE SENSING TEMPERATURE RECORDER
HP 10441A PROBE
AEMC 814 LIGHT METER
HP X281A ADAPTER
HP 3335A Synthesizer/Lev?el Generator Opt. 002
Triplett 420-R DC Amp/DC Volt Panel Meters **AS IS**
HP 5005A SIGNATURE MULTIMETER w/TIMING POD AND DATA PROBE
PMC INDUSTRIES THREAD RING GAGE SET 216-28 UNF-2A GO/NO GO
ILX LIGHTWAVE LDT-5910B TEMPERATURE CONTROLLER
HP 8494A ATTENUATOR ***OPT. 001***
HP 70206A SYSTEMS GRAPHICS DISPLAY
NARDA CEL30300C DUAL DIRECTIONAL COUPLER
HP 436A POWER METER
TYCO 91504-1 CRIMP TOOL
Triplett 230-G 2 AC AMP Panel Meter
YAMATAKE SDC10 TEMPERATURE CONTROLLER MODEL # C10T6DTA0000
Narda 4372-2 POWER DIVIDER
AGILENT E4432B SIGNAL GENERATOR ***OPT. UN8***
Snap On TQ1003-AL Torq Meter
HP 8012B PULSE GENERATOR ***SOLD AS IS***
HP 8494H ATTENUATOR w/OPT. 002
HP 84904K ATTENUATOR
HP 11713A ATTENUATOR/SWIT?CH DRIVER
SHEFFIELD 5-40 NC-2A THREAD RING GAGE SET GO/NO GO
Wilbac ACV150 0-150 AC Volts Panel Meter **AS IS**
HEMCO 11/2-11 1/2 NPSM-2A THREAD RING GAGE NO GO
TYCO 91515-1 HAND CRIMPER 24-26AWG
HP 11602B TRANSISTOR FIXTURE
HP 83623A 8360 SERIES SYNTHESIZED SWEEPER ***OPT. 001,002,006,008?***
Wilbac Cat. No. 18905 Panel Meter **AS IS**

PMC INDUSTRIES THREAD RING GAGE SET 3125-24 UNF-3A GO/NO GO
ROHDE & SCHWARZ SME 03 SIGNAL GENERATOR ***OPTS. B1, B2, B5, B11, B12***
BRUEL & KJAER TYPE 2307 LEVEL RECORDER
HP 11536A 50 OHM TEE
TOPWARD ELECTRIC INSTRUMENTS 4302D POWER SUPPLY
RHODE & SCHWARZ SMIQ 03B SIGNAL GENERATOR
HP 8481D POWER SENSOR
IMADA Z2H-1100 DIGITAL FORCE GAGE
TELECOM TECHNIQUES FIREBIRD 1500A DATA ERROR ANALYZER
HP 86634A MODULATION SECTION ***SOLD AS IS***
WINTER THREAD RING GAGE SET 4-48 NF-2A GO/NO GO
Sturtevant Richmont CAL-36 Proto-Torq Torque Screwdriver
HP R422A CRYSTAL DETECTOR w/420B ADAPTER
REICHERT DUO CHECK MODELS DC70 & DC60 w/ FREE COMMERCIAL CALIBRATION
Triplett 0-1 DC Milliamps Panel Meter **AS IS**
Ashcroft 0-600 Test Gauge
NATIONAL INSTRUMENTS PXIe-1062Q MAINFRAME w/PXIe-8105, PXI-4461, PXI-4462
HP 81000BA INTERFACE ADAPTER
PMC INDUSTRIES THREAD RING GAGE M45X1.5-4G NO GO
GRAPHTEC CORP GL220 DATA LOGGER
Weston 801 Ohms Panel Meter **AS IS**
HP 4291B RF IMPEDANCE/MATER?IAL ANALYZER ***OPT. 001,002,1D5***
HP 70902A IF SECTION RES BW 10Hz-300kHz
Triplett 330-G 0-150 AC Volts Panel Meter **AS IS**
ELECTRICAL INSTRUMENTS 5981A THERMOCOUPLE MILLIAMMETER
EIGENLIGHT 420-01 FIBER OPTIC POWER MONITOR ***OPT. 01***
Yokogawa 0-3 AC Volts Panel Meter **AS IS**
UDT 2153 LUMINANCE METER
NARDA 5456-2 POWER DIVIDER
Dillon Force Gage Up To 5000lbs **AS IS**
HP 41420-61601 Quadrax Cable (3M)
Modutec 939033-002 Panel Meter

KCPU0018-00
VPM-8100LVQ-000
SV206N07M
FV21S
H-4-ATA
SNAP-LCM4
4022.634.20691 PAAC 450/20
ASB250AF1A4
810-017034-005
2R4045-2SPNP01
DOP-A10TCTD
TPG-1RM
ECOSTEP 100-AJ-000-000
SLO-SYN/430-PTX
CXP-544A
MINI CIRCUITS SPLITTER ZSCJ-2-2
DOALL 1/4-20 UNC-3A THREAD RING GAGE GO
HP E8302A NORTEL BASE STATION CONNECTION KIT
HP E1458A 96 CHANNEL DIGITAL I/O VXI BUS
GRAPHTEC midi LOGGER GL820
Simson 1329SC DC Volts 0-5 Panel Meter **AS IS**
BROWN & SHARPE 599-7374 DIAL SNAP GAGE .0001
AMP ROTA-CRIMP 601075-1 CRIMP TOOL
Triplett 230-G 0-10 AC Amps Panel Meter
LOT SALE!!!! ENFM 7211 Pressure Gage
Wilbac Cat. No. 18945 Panel Meter **AS IS**
0-6000 DC Amps Panel Meter **AS IS**
RDL IMD-801D-03A INTERMODULATION DISTORTION SIMULATOR
SLAUGHTER 2550 AC/DC HIPOT TESTER
Simpson AC Milliamperes Pa16267-1-4
16267-1-2
16066-41-2
16413-1-3
505-6660B
6FC5357-0BB25-0AB0
6FC5103-0AB03-OAA3
6AU1435-0AA00-0AA1
6DD1660-0AE0
TI505-6660
901B-2555-A
6DD1642-0BC0
353A4F1NNNTNNA4
6ES5526-3LG0
6ES5928-3UA11
6GK1143-0TA00
6ES5947-3UA22
A5E-H2
6ES5947-3UR21
549-214nel Meters **AS IS**
Mitutoyo 122-127 Blade Micrometer
PMC INDUSTRIES THREAD RING GAGE SET 3125-32 UNEF2A GO/NO GO
Triplett 230-G 0-3 AC Amp Panel Meter **AS IS**
PRIMOS HUNTING CALLS TRUTH CAM 60 MODEL #63030
CALMAR OPTCOM FPL-01C-FF FIBER LASER
Triplett 230-G 0-500 AC Milliamps Panel Meter **AS IS**
Triplett 327-PL 0-500 DC Microamps Panel Meter **AS IS**
DICKSON TH805 TEMPERATURE AND HUMIDITY RECORDER
BK PRECISION 2831D 4 1/2 DIGIT TRUE RMS DIGITAL MULTIMETER
OMEGA HHF1A DIGITAL AIRFLOW METER
HP 435B POWER METER ***SOLD AS IS***
Armaco U184 0-30 Volts Panel Meter **AS IS**
HP 84907K 70dB ATTENUATOR
SUNRISE TELECOM T10 SS150 COMMUNICATIONS TESTER
HP 85620A MASS MEMORY MODULE

1C31166G01
1C31132G01
1C31234G01
1C31238H01
5X00070G04
1C31224G01
1C31233G04
5X00300G01
1C31129G03
1C31147G01
1X00024H01
EXTECH INSTRUMENTS 407119A CFM HOTWIRE THERMO ANEMOMETER
Wilbac ACA5 0-5 AC Amps Panel Meter **AS IS**
Wilbac Cat.#18185 0-10 AC Amps Panel Meter **AS IS**
Wilbac Cat. #18170 0-1 AC Amps Panel Meter **AS IS**
Triplett 230-G 0-50 AC Volts Panel Meter **AS IS**
Triplett 330-M 0-150 AC Volts Panel Meter **AS IS**
Wilbac Cat. #18240 0-250 AC Volts Panel Meter **AS IS**
HP 83630L SWEPT GENERATOR ***001***
HEWLETT PACKARD 6627A SYSTEM DC POWER SUPPLY
HP 70903A IF SECTION RES BW 100kHz-3MHz
PMC INDUSTRIES THREAD RING GAGE SET .216-28 UNF-2A GO/NO GO
Wilbac Cat. #18355 0-5 DC Amps Panel Meter **AS IS**
Simpson 59 0-300 AC Volt Panel Meter **AS IS**
GE Type A0-91 0-200 AC Milliamps Panel Meter **AS IS**
FEDERAL C6Q DIAL INDICATOR .001
Snap On TE 1003-FU Torqometer
AMPROBE ULD-300 ULTRASONIC LEAK DETECTOR
IFR 2026Q CDMA Interfer/Multi Source Generator Opt. 3
Simpson 1329SC DC Amps 0-5 Panel Meter **AS IS**
HP 435A POWER METER ***SOLD AS IS***
Triplett 230-G 0-10 AC Amps Panel Meter **AS IS**
PMC INDUSTRIES THREAD RING GAGE SET 112-48 UNF-3A GO/NO GO
GW INSTEK GPS-3303 LABORATORY DC POWER SUPPLY
XILINX PARALLEL CABLE IV DLC7

140XBP01600
140XBP00600
140XBP01000
140DDO36400
140XTS00200
TSXP47-20
TSX P57153M
TSX P57103M
TSXAEZ414
TSXETG100
LXM15MD28N4
ABL 2REM24065H
BMXDAI0805
990NAA26320
VX5A58D46N4
BMXP
BMXCPS3500
490NOR00003
SUNRISE TELECOM T10 COMMUNICATIONS TESTER ***OPTS. PR1, BR1, SS400***
Simpson 0-50 AC Volts 2000 Ohm/Volt Panel Meter **AS IS**
HP 8590A SPECTRUM ANALYZER
Triplett 360-G 0-150 Watts Dynomometer Type 150 Volts Panel Meter **AS IS**
RAYTEK RAYNGER MX2TDUVB IR THERMOMETER
CHUAR 57-145-5 36PC 3/4OD M6x1MM ROUND SPACE BLOCK SET
ROHDE & SCHWARZ SMIQ06B 300kHz-6.4GHz
BLUEPOINT EEDM503B MULTIMETER
HP 34970A DATA ACQUISITION/SWI?TCH UNIT
HP 1201A Oscilloscope
HP 6289A DC Power Supply
Orthodyne Electronics 367-1 Tester
Watlow 985 TEMP CONTROLLER
Lambda LPD-421A-FM Dual Regulated Power Supply
(9) HP 6205B Dual DC Power Supply (only 7 pictured)
GSE 290 ELECTRONIC TORQUE TESTER ***SOLD AS IS***
STARRETT SS81A1 GAGE BLOCK SET ***SOLD AS IS***
BRUEL & KJAER TYPE 2804 MICROPHONE POWER SUPPLY ***SOLD AS IS***
TEKTRONIX 7B53A DUAL TIME BASE ***SOLD AS IS***
MKS INTRUMENTS 270 / 370HS-1 SIGNAL CONDITIONER WITH SENSOR **AS IS**
Leeds & Northrup 4390 Potentiometer

PM825 3BSE010796R1
PM511V08 3BSE011180R1
PM150V08 3BSE003641R1
3HNE00313-1
3HAC023195-001
PHARPS32000000
2012AZ10101B
DSDP170
DSQC 697 3HAC037084-001
DSBC176
SE DSDI 120A
SNAT603CNT
SNAT 601 TAI
SNAT 7780
SNAT 7261
SNAT 609
DSQC335
DSTA180
DSTD 132
HP 59301A ASCII TO PARALLEL CONVERTER
Kepco JQE 1525M Power Supply
ENDEVCO 2271AM7 ACCELEROMETER ***SOLD AS IS***
HP 4952B PROTOCOL ANALYZER W/18179A INTERFACE ***SOLD AS IS***
WILTRON 560A SCALAR NETWORK ANALYZER ***OPT. 02*** ***SOLD AS IS***
HP E3610A DC POWER SUPPLY ***SOLD AS IS***
HP 1600A LOGIC STATE ANALYZER ***SOLD AS IS***
Data Precision 1351 Digital Multimeter
HOLT INSTRUMENTS HCS-1 ALTERNATING CURRENT SHUNTS ***SOLD AS IS***
Vii 2502B VIDEO TEST PATTERN GENERATOR ***SOLD AS IS***
ENDEVCO 2213E ACCELEROMETER **SOLD AS IS***
ROHDE & SCHWARZ SME03 SIGNAL GENERATOR ***SOLD AS IS***
KROHN-HITE 6500A DIGITAL PHASE METER **AS IS**
PULSE INSTRUMENTS PI-451 MOS/CCD DRIVER ***SOLD AS IS***
Integra SCS-300B SWEEPING CURRENT SUPPLY
HP 8761B SPDT RF SWITCH ***OPT. 001*** ***SOLD AS IS***
HP 8494G 11dB ATTENUATOR ***SOLD AS IS***
HP 70001A MAINFRAME ***SOLD AS IS***
HP 438A POWER METER ***SOLD AS IS***
GERTSCH DSB-1400 DECADE SYNRO BRIDGE
NARDA 4226-10 DIRECTIONAL COUPLER ***SOLD AS IS***
(3) Data Precision 2480R Voltmeter

IC670PBI001-BE
IC693CPU374
IC693CMM321
IC693APU301
IC600LX624K
IC693ALG220G
IC693ALG223
IC693CBL327C
IC693MAL645D
IC693DSM302-AE
IC693PBS105G
IC693PCM301M
IC693ALG221
IC693ALG442
IC693CPU364-CF
IC695CPU315-BB
IC693CHS392K
IC693CHS391
IC694TBB032C
531X309SPCAJG1
QPI3D200C2P-B-02
(3) Data Precision 2480 Voltmeter
SCHERR TUMICO DYNAMOMETER ***SOLD AS IS***
INFICON QUADREX PPC 017450G1 CALIBRATOR ***SOLD AS IS***
MAC PANEL VXI1406 MAINFRAME ***SOLD AS IS***
HEWLETT PACKARD 8350B SWEEP OSCILLATOR
Omega 115TC, 199, 650 or $25 Per Unit
HUNTER L-1000 MECHANICAL FORCE GAGE 0-1000 GRAMS ***SOLD AS IS***
GERTSCH DSB-2138B DECADE SYNCRO BRIDGE
BERRY TEST SET 314A TRUNK TEST SET ***SOLD AS IS***
SORENSEN DCR600-4.5B POWER SUPPLY ***SOLD AS IS***
MOBITEX RADIO PROTOCOL MONITOR ***SOLD AS IS***
HP 355F VHF ATTENUATOR ***SOLD AS IS***
HP 84904K ATTENUATOR ***SOLD AS IS***

1746-OW16
1746SC-INO4VI
1746-NR8
1746-NO8I
1746-NT4
1746-A13
1746-P4
1746-P1
1746-P2
1746-NI16I
1746-HSCE
1746-HT
1746-OBP16
1746-OB16
1746-NI8
1746-OAP12
1746-IB32
1746-ITB16
1746-OB32/D
1746-OB32E
BRUEL & KJAER ZZ0201 TEST UNIT FOR 2032/2034 ***SOLD AS IS***
HEWLETT PACKARD 37717C PDH/SDH/ATM TEST SET **AS IS**
KRYTAR MLDD 2 WAY POWER DIVIDER ***SOLD AS IS***