The Advanced
®
3D3/4D3 Service Manual
53
Software for Advanced Instruments model
3D3/4D3 instruments is contained in factory-
installed integrated circuits called PROMs,
EPROMs, or Flash EPROMs, and is some-
times referred to as “Firmware”.
PROM stands for “Programmable Read-Only
Memory”, and is a one-time use device.
EPROMs are “Erasable Programmable Read-
Only Memory”, and can be reused by expos-
ing the device to ultraviolet light and an
external reprogramming sequence. Both of
these devices have been used on Advanced
Instruments model 3D3/4D3 instruments with
the Hitachi processor in DIP (Dual In-Line
Package) byte densities of 256K and 512K
(see section 2, System control electronics to
learn how to identify your memory type).
The 256K Byte Hitachi PROM/EPROM
structure is no longer supported and cannot be
updated. The 512K Byte PROM/EPROM-
based system can be updated on a limited
basis. Complete updates, allowing for contin-
ued support, require replacing the control
electronics with the new Intel control board
set.
The new Intel-based instruments use Flash
EPROMs, “Electrically Erasable Program-
mable Read-Only Memory”. This type of
memory is furnished in two PLCC (Plastic
Lead Chip Carrier) devices on the 3D3620/
4D3620 processor board at locations U3 and
U4. U3 is the lower 8 bits of the 16-bit
processor address bus, and U4 is the upper 8
bits.
Advanced Instruments products using this
“FLASH” technology can be field-updated
using a Windows PC and Advanced
Instruments serial cable. For the latest
instructions on performing the RS-232 port
firmware upgrade, consult the documentation
supplied with the upgrade package. For infor-
mation on available updates, consult
Advanced Instruments or your dealer.
Performing FLASH firmware update
Performing this update should not affect any
of your calibrations or system settings unless
the update has made changes to this area of
memory. For specific information, consult
the documentation included with the update.
For Intel-based instruments
If your instrument has a three-position (metal
housing) Operator/Supervisor keyswitch, then
it was purchased with the Intel processor con-
trol board set 3D3605/4D3605.
1. Turn off the instrument. Select the 45º
position between Operator and
Supervisor.
2. Attach the Advanced Instruments serial
cable between your PC and the instru-
ment.
3. Turn on the instrument. The display
should read “Flash BOOT Program”.
4. Perform the download, using the instruc-
tions provided with the update software.
After download is complete, the instru-
ment will reboot and report the new soft-
ware version.
5. Turn off the instrument and return the
Operator/Supervisor keyswitch to the
desired position.
For Hitachi systems with Intel upgrade
If your instrument has a two-position (black
plastic) Operator/Supervisor keyswitch, then
it was purchased with the Hitachi processor
control board 3D3600/4D3600. However, if
you have replaced that board with the Intel
processor control board set 3D3605/4D3605,
you can still perform the field firmware
update using the following procedure.
Instrument Software Updates
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