Electronics/LA3200

Logic Analyser

32 channel
Equipment Information
Status	Unknown
Manufacturer	Thurlby Thandar Instruments
Model	LA3200
Hackspace Information
Induction Required	Yes
Induction Information	Here
Card RFID Enabled	No
Owner	Hackspace

The Basics

Currently requires the following parts to make the equipment work:

• Cables from the logic analyser to the POD
• Cables from the POD to the circuit board
• POD PCB enclosure

A logic analyser (analyzer) is used to probe digital signals in an electronic circuit. One example would be the digital input/output pins on a microprocessor such as an Arduino. The signals are displayed on a screen in the form of a timing diagram so that they can be compared against each other or against a timing reference.

The logic analyser uses an external POD and cables to attach to the digital circuit. Different PODs are available for different functions. The POD we have is not an original part it was generated from the service manual.

Documentation

Manuals can be found here just search for LA3200.

According to this thread the pinout for the RS423 serial port on the back is:

2 - 3
3 - 2
4 *
5 - 5
6 *
7 - 8
8 - 7

(-) = link to
(*) = short together at pc end

The device is apparently identical to a Hitachi VC3120.

Pod photos and even a PCB design for replacement pods can be found here.

Specification

Logic Analyser

• 32 channels (LA3200)
• 25MHz synchronous operation on all channels
• 100MHz asynchronous operation (8 or 12 channels)
• 5ns glitch capture capability
• Multi-level trigger sequencing
• Non-volatile data and set-up memories
• Disassembler options for popular uPs with specific PODs
• POD AP01 for 32 channels
• Manual: TBD
• Owner: TBD

Combination data pod AP01

This is an assumed specification:

• Obtained from ebay user robhookham on ebay
• 32 data inputs (DC to 25MHz)
• No 100MHz or glitch capture capability
• No location for the disassembler ROM, this would need extra circuitry (TBD)
• 3 clock inputs
• 3 clock qualifier inputs
• Input impedance 100k/5pF
• Threshold TTL (1.4V)
• Single 40-way connector with colour coded plug-on connection leads
• The POD board's Eagle CAD files are available

Calibration

Not required

Induction

Ask on the mailing list for volunteers to demonstrate the use of any of the test equipment.

Safety

You must read the safety documentation in this link before using this equipment.