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66252 DMM Switch Compatible with all 6625 Measurement Systems Provides Ease of Use for 6634A Series or Other System Resistance Standards Guildline Instruments Limited is pleased to introduce the 66252 DMM Switch for all versions of the 6625 system including the widely fielded 6625AF. This option allows operators new flexibility from the 6625 Measurement system. For example, the Guildline Model 6634A Temperature Stabilized Resistance Standard, with up to 10 available Resistance Standards, is typically hard-wired on 10 channels of the 6664 Series scanners. It is normally difficult or time consuming to remove all the cabling and wires if an operator simply wanted to use the Resistance Standard as a source for items such as artifact calibrations, MODEL 66252 FEATURES high accuracy DMM's and other metrology situations. Allows System Resistance Standard to be When installed, the DMM Switch allows the 6625 operator to use used as Resistance Source the System either in a measurement configuration against the 6622 Series Bridge or allows the 6634A resistance values to be Available in Bench Configurations used as a Standard output on any available free scanner channel (No Modification to 6625AF System) without having to change wires or remove cables. Usable Resistance Range 1 to 100 M Now use your 6625 System Resistance Input Impedance >1014 Standards for both Measurement and Source Includes Scanner Low Thermal Short Applications without having to disconnnect Software Utilities available and reconnect wires. Includes lead compensation procedures for low resistance connection to long scale The DMM Switch isolates the 6622 DCC Bridge from the 6625 DMM's. system and joins the Rs and Rx scanner channel lines together. This allows you to connect the DMM to any free Rx channel (Line Use on any 6625 System including AF Models