Fluke Biomedical 190M - Manual (Page 157)

Appendices
Instrument Security Procedures
C
C-1
Appendix C
Instrument Security Procedures
Memory
The Fluke Biomedical 190M Series Medical ScopeMeters
have the following memory devices:
1. D4000: Controller code-named “Spider,” which is a
4Kx32 ROM containing an initial program with the
operating code for the product, and a 1Kx32 RAM to
temporarily store stack values for computing actions.
D4001: 1 x 4 Mb SRAM. SRAM memory used to
store:
- last used screen and instrument setup state
- saved screens and instrument setups
2. D5000, D5002: 2 x 64 Mb Flash EEPROM for 190M-2:
2 x 32 Mb Flash EEPROM (for 4-channel
instruments).
Non-volatile memory used to store operating code
(instrument firmware) for the product, and to store
calibration constants.
3. D5001, D5003: 2 x 8 Mb SRAM SRAM memory used
to store:
- the actual screen and instrument setup
- saved screens and instrument setups
Security Summary
The operating code (instrument firmware) stored in
D5000, D5002 can be read using dedicated remote
interface commands (available only for use by the Fluke
factory).