Instructions

C-1
Appendix C
Instrument Security Procedures
Introduction
Model Numbers:
Fluke 434-II, Fluke 435-II, Fluke 437-II
Short Description:
3-Phase Power Quality Analyzer
Memory.
Fluke 43x-II has the following memory devices:
1. RAM 8M x 16, U901, type: e.g. MT47H64M16HR-25IT:H,
contains: temp storage of measuring data
2. Video RAM 256k x 16, D1001, type: e.g. CY62146EV30LL,
contains: storage of data to be displayed on LCD-screen.
3. Flash-ROM 16M x 2, U1100, U1101, type: e.g. MW29W160EB,
contains: the instrument’s embedded software and calibration data.
Also Analyzer settings such as Config, Freq, Vnom, Limits, and Current Clamp data
that differ from Factory Default are stored here.
4. FIFO (First In First Out) RAM 2kB, U801, type: e.g. SN74V235-7PAG,
contains: data to be exchanged between DSP and Microcontroller.
5. SRAM 16 Mb x 2, D1100, D1103, type: e.g. CY62167DV30LL,
contains: temporary data storage for microcontroller.
6. SD Memory Card. Contains: all datasets, screens, and logging data.