11A32: Difference between revisions

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[[Doug Haines]] found an alternate supplier of 8051-compatible chips (OKI Semiconductor) that offered a 16Kbyte on-chip ROM,  
[[Doug Haines]] found an alternate supplier of 8051-compatible chips (OKI Semiconductor) that offered a 16Kbyte on-chip ROM,  
and that's what the plug-ins wound up with. The finished code size wound up at about 14 KB.
and that's what the plug-ins wound up with. The finished code size wound up at about 14 KB.


The 11A32 also contains a DS1120 NVRAM and an [[ACVS]] sample and hold module.
The 11A32 also contains a DS1120 NVRAM and an [[ACVS]] sample and hold module.

Revision as of 08:06, 25 December 2022

Tektronix 11A32
400 MHz dual channel vertical plug-in
Tektronix 11A32

Compatible with 11000-series scopes

Produced from 1987 to (?)

Manuals
Manuals – Specifications – Links – Pictures

The Tektronix 11A32 is a 400 MHz dual-channel amplifier plug-in for 11000-series scopes. Each of the attenuator modules contains an M474 buffer amplifier. Each of the attenuator modules feeds an M377 amplifier IC. The output signals of the two M377s combine at the output of the 11A32. The fine steps between the deflection ranges are calibrated in 1% increments.

The 11A32 uses the same firmware as the 11A34.

Key Specifications

Bandwidth DC to 400 MHz plus 100 MHz and 20 MHz BWL filters
Rise time 875 ps in 1 GHz mainframe such as the 11402, 11402A, 11403, 11403A, DSA601A, or DSA602A
Deflection 1 mV to 10 V per division in 1% calibrated steps
Input impedance 50 Ω or 1 MΩ
Features
  • High-Resolution Calibrated DC Offset
  • Fast Overdrive Recovery
  • 50 Ω mode: 5 V RMS overload protected with manual reset

Internals

The 11A32 and 11A34 were originally intended to use Intel 8052 microcontrollers. However, during development, the firmware swelled beyond that chip's 8192-byte maximum on-chip ROM size. Doug Haines found an alternate supplier of 8051-compatible chips (OKI Semiconductor) that offered a 16Kbyte on-chip ROM, and that's what the plug-ins wound up with. The finished code size wound up at about 14 KB.

The 11A32 also contains a DS1120 NVRAM and an ACVS sample and hold module.

Links

Pictures

Custom ICs used in the 11A32

Page Model Part nos Description Designers Used in
M377 M377 165-2129-03 165-2089-06 155-2089-05 amplifier John Addis 11A16 11A32 11A33 11A34 11A52 2245 2245A 2247 2247A 2252 TDS410 TDS420 TDS460 TDS520D TDS540D TDS580D TDS680C TDS684C TDS714L TDS724D TDS754D TDS784D
M474 M474 amplifier John Addis Ivan John Cousins 11A32 11A34