. From the Figure 1. Pinout of the ECC81. amplifiers. Output stage valves such double triode series as the EL84 (6BQ5) and EL34 ECC81/ECC82/ECC83, which all (6CA7), and ECC81 (12AT7), ECC82 have the same pinout, the ECC82 is (12AU7) and ECC83 (12AX7) double also suitable, but the ECC83 has too ECC81 triodes are readily obtainable today, low an anode current at low volt- albeit at rather higher prices than a ages. The ECC81 was originally few decades ago. intended for HF applications and Other
look-ahead feature 66H Use current settings as default (until hard reset or power off) 77H Disable ECC 81H Disable 8-bit data transfers (factory default) 82H Disable write cache (see product manual for default settings) 88H Enable ECC (factory default) 99H Enable retries (factory default) AA H Enable read
value 55h Disable read look-ahead feature 66h Disable reverting to power on defaults 77h Disable ECC 81h Obsolete 82h Disable write cache 84h Disable all automatic defect reassignment 88h Enable ECC 99h Enable retries 9Ah Set device maximum average current AAh Enable read look-ahead feature ABh Set maximum
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