1240

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Modular Logic Analyzer Tektronix 1241 Produced from 1983 to (?) Manuals 1240 Service Manual Vol.1 1240 Service Manual Vol.2 1241 Service Manual (PDF) ROM images (All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

The Tektronix 1240 is a logic analyzer. The 1241 is the same device but with a color-shutter CRT.

Specifications

The 1240/1241 accommodate one to four acquisition boards of type 1240D1 with 9 channels or 1240D2 with 18 channels for a total of up to 72 acquisition channels. Acquisition speeds reach up to 100 MHz asynchronous or 50 MHz synchronous. The 1240/41 provides 14 levels of triggering with conditional branching.

Exchangeable ROM cartridges allow for mnemonic disassembly and state analysis of most microprocessors of the time.

An optional "Comm Pack" provides a serial port including remote control capabilities.

Internals

The 1240 is built around an Intel 8088 as the control processor with 64K DRAM, and firmware in a bank of EPROMs. A separate I/O processor board is powered by a Z80A CPU. The display controller is built from individual TTL and ECL ICs.

The power supply is a switch-mode supply that mainly generates 5 V at up to 45 A. It requires a minimum load of 11.6 A. Additionally it generates 3 V at up to 8 A with no minimum load and several other voltages that are derived from linear post regulators.

Boards are two to six layers.