I have one that is slightly different than what was posted here already.
It is branded on the front as Fluke 97 Scopemeter / Philips on the back. Serial number DM547XXX.
The main difference between modes is in the flash memories. According to fluke website (if the link does not work go to manuals -> search for: 97):
https://dam-assets.fluke.com/s3fs-public/93_95_97mveng0000.pdf?_ga=2.14758966.1275149489.1535696131-345369494.1535440239Document says:
Model:
Fluke 93, 95, 97, 97/AUTO
Product Name:
ScopeMeter Series I Test Tool
Instrument Description:
The Fluke ScopeMeter Series I test tools provide an up to 50 MHz handheld
oscilloscope combined with a 3½ digit DMM.
Memory Description for instruments with software versions below
V5.xx:
The Fluke 9x has the following memory devices:
1.
D1207 (N28F256-A200, 256 kB or N28F010-200P1C4, 1 MB) and D1208
(N28F512-200P1C4) flash EEPROM for instrument firmware and calibration
constants. 2. D1204 (HM62256, 32kx8 SRAM) and D1206 (HM62256, 32kx8 SRAM) for
saved test tool settings (Fluke 97 and 97/AUTO), saved screens and
waveforms (Fluke 97 and 97/AUTO), LCD bit plane data and measurement
data.
Memory Description for instruments with software versions V5.xx and
higher:
The Fluke 9x has the following memory devices:
1.
D1221 (E28F010-120, 1 MB) flash EEPROM for instrument firmware and
calibration constants. 2. D1232 (M5M5256BRV, 32kx8 SRAM) for saved test tool settings (Fluke 97
and 97/AUTO), saved screens and waveforms (Fluke 97 and 97/AUTO).
3. D1218 (M5M5256BRV, 32kx8 SRAM) for LCD bit plane data and
measurement data.
It looks like those with memories N28F* are older and those with E28F* are newer. According to the pictures posted in this thread and over the web also series II uses E28F* memories.
I see that Joeqsmith has one unit with single N28F* memory and the other with single E28F*.
https://www.eevblog.com/forum/testgear/old-philips-fluke-97/msg1063314/#msg1063314My unit has two N28F* flash chips: 512kB + 256kB
Why I'm doing this brain exercise you say? This is the interesting part from the Fluke document I already mentioned abowe:
Memory Cleaning Instructions for instruments with software versions
below V5.xx:
1.
The operating code (instrument firmware) stored in D1207 and D1208 can be
read using special remote interface commands. The instrument firmware can
be loaded using a dedicated Fluke software program. Calibration constants stored in in D1207 and D1208 can be read using
special remote interface commands. The calibration constants are generated
when the meter is sent through its calibration process and are fundamental to
the test tool operation.
These scopmeters can hold just 3 calibrations (one of them is probably done already in factory) and then memory is full and you need to bring it to Fluke where they will blank the memories by reuploading firmware. Maintenance manual excerpt attached.
There is also interesting part that mentions Kernel restore procedure - see attachment.
User's manual also mentions that firmware from V4 up adds new functions which I dont have in my unit. For example: Duty cycle, timestamps during min/max recording, 30ohm range...
My questions are:
1.) Is there anyone out there having the firmware for one of these? (preferably from unit with two N28F* flash chips)
2.) Anyone did some hacking using serial cable to get something out? Firmware or calibration data? Any hidden instructions to be send to the scope?
If nothing then I hope that at least this post can serve as the starting point for someone more skilled then me.
Regards,
Tomas