是徳KEYSIGHT 34420A毫微伏微欧表用户指南(英文).pdf

User’s Guide Part Number 34420-90001 December 1994 For Safety information, Warranties, and Regulatory information, see the pages behind the Index. © Copyright Hewlett-Packard Company 1994 All Rights Reserved. HP 34420A Nano Volt/Micro Ohm Meter The HP 34420A is a 71/2 digit, high performance nanovolt, micro-ohm meter. Its combination of bench-top and system features makes this meter a versatile solution for your testing requirements now and in the future. Convenient bench-top features • Built-in math operations including thermistor, thermocouple and RTD temperature measurements • Two channel input allows ratio and difference functions for voltage measurements • Highly visible vacuum-fluorescent display • Portable, ruggedized case with non-skid feet Flexible system features • HP-IB (IEEE-488) interface and RS-232 interface are standard • SCPI (Standard Commands for Programmable Instruments) and Keithley 181 compatibility • Readings at up to 250 per second HP 34420A Nano Volt/Micro Ohm Meter The Front-Panel at a Glance 1 Input channel select 5 Menu operation keys 2 Measurement function keys 6 Range/number of digits displayed keys 3 Math operation keys 7 Single trigger/autotrigger/auto hold key 4 Filter select key 8 Shift / local key 2 The Front-Panel Menu at a Glance The menu is organized in a top-down tree structure with three levels. To turn on menu press: To move left/right To move up/down To enter a command press: A: MEASurement MENU 1: DIG FILTER Ø 2: INTEGRATE Ø 3: OCOMP Ω Ø 4: LOW POWER Ω Ø 5: LOW VOLT Ω Ø 6: LoV LIMIT Ω B: TEMPerature MENU 1: PROBE TYPE Ø 2: UNITS Ø 3: RTD TYPE Ø 4:RTD Ro Ø 5: T/C TYPE Ø 6: COLD JUNCT Ø 7: JUNCT TEMP C: MATH MENU 1: STATS Ø 2: NULL VALUE Ø 3: SCALE GAIN Ø 4: SCALE OFST D