Keithley Keithley 6517B differences from 6517A free download

File name Keithley 6517B differences from 6517A.pdf

KEITHLEY CONFIDENTIAL - PROPRIETARY Differences between the new 6517B and the 6517A version The following document lists the known differences between the revised Model 6517B and the previous 6517A. Although the goal was to make the 6517B as functionally identical to the 6517A, there are some enhancements and changes that are documented so that you can communicate specific changes to your customers. Contents 1. Enhancements over 6517A 2. Hardware differences 3. Functional differences 3.1 Calibration 3.2 Communication 3.3 Measurements 3.4 New features 4. Specification changes from 6517A 1. Enhancements over 6517A 6517B now includes a 50,000 point battery-backed reading buffer, no longer limited by the number of reading elements stored. 6517A capacity was 15,706 readings and was limited by the number of elements stored in the buffer. Faster reading rates to the internal buffer (~425rdgs/sec) and to the IEEE bus (400rdgs/sec). Up to 5x faster settling time when measuring low currents. 6517B now uses flash upgradeable firmware. 6517B now supports up to 115200 baud. The 6517A only supported up to 19200 baud. User selectable line power values of 100, 120, 220, 240VAC instead of the 6517A switch that selected either a range of 90-125VAC or 180-250VAC. 2. Hardware differences Preamp, analog output, and common jacks are no longer 5-way binding posts. These binding posts for the Electrometer Outputs have been replaced with safety jacks that meet current safety standards. The ground lug has also been replaced with a pluggable ground lead. 1 JLT 07/25/08 KEITHLEY CONFIDENTIAL - PROPRIETARY The hardware interlock connector has been changed. The 6517B interlock connector has been changed to a 4-pin Phoenix Connector compared to the 4-pin DIN connector on the 6517A. The old connector has been obsoleted. To accommodate the new connector, two new accessories have been added: 6517B-ILC-3: 4-pin Phoenix connector to 4-pin DIN Interlock Cable has been added to support use with the 8009A Resistivity Test Chamber. CS-1305: Interlock Connector The interlock is now a real hardware interlock for the operation of the High Voltage power supply. This is to bring the unit up to the latest safety standards. Note that because of this, the 6517B voltage source will not operate without the interlock whereas the 6517A voltage source would operate without an interlock connection. The Digital I/O connector has been changed to a DB9 male connection instead of the older mini DIN connector. External trigger signals are part of the digital I/O connector. Space limitations prohibited the BNC connectors. BNC connectors were redundant and market demands no longer required them. The main input