Part 2

390 Plug-In Assembly ConfigurationTREE SWITCH JUMPERSNO TIC COMP TIC COMPA DECADE SERIESJM1,2,3RESISTORS@@B DECADESERIES RESISTORSDECADE A TODECADE B JUMPERS(JM4,5,6)-R26--CB-0 . - - . n TaaI3497-OPC-82=SHORTING PINFigure 82. Option 020 -Relay Card Jurnpers/ResistorsShorting the Series ResistorsAs factory configured, there are three 100 ohm resistors in series with the A decadeCOMMON output (R27, R28 and R29) and three 100 ohm resistors in series withthe B decade COMMON output (R30, R31 and R32). For more accurate two-wireresistance measurements, these resistors can be shorted out.For two-wire ohms measurements on A decade channels, short out R27, R28 andR29, using the shorting pins on the relay card. For two-wire ohms measurementson B channels, short out R30, R31 and R32, using the shorting pins. See Figure 82for resistor and pin locations. If the assembly is to be used in the 3498A, see theWARNING note which follows.Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com