Frequency Central Cryptograph Build Documentation

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Frequency central
Build documentation for:
Cryptograf
Cryptograf features 4 address inputs, 1, 2, 4 and 8, each of which has an associated input socket as
well as a 3 position state switch which allows each address input to be held high, respond to input
signals, or held low.
Each input has two status LEDs. The red LED displays the signal present at the input socket, while the
green LED displays the status of the address input.
The combination of signals present at the input sockets, together with the positions of the state
switches allows Cryptograf to have 16 different output states, numbered from 0 through to 15.
The output state of Cryptograf can be ascertained by observing which of the 4 address inputs are
high.
For more details, please refer to the
Cryptograf User Guide
Main PCB
Pots 'n' sockets PCB
From December 2019 these three values have been replaced with 120K, 47K, 47K. If you have an
older PCB with 100K, 27K, 27K, we recommend that you replace these values with 120K, 47K, 47K.

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Summary of Contents for Frequency Central Cryptograph

  • Page 1 Frequency central Build documentation for: Cryptograf Cryptograf features 4 address inputs, 1, 2, 4 and 8, each of which has an associated input socket as well as a 3 position state switch which allows each address input to be held high, respond to input signals, or held low.
  • Page 2 Bill of Materials 1K x 40 10uF x 1 CD4514* B100K x 16 10K x 6 47uF x 2 these)* * 22K x 1 TL084 x 4 47K x 2 TL072 x 2 3.5mm socket x 8 (in place of 27K on older version) 100K x 20 BC547 x 1...
  • Page 3 Main PCB assembly 1. Solder all resistors 2. Solder all IC sockets 3. Solder the 78L05 and all BC547 – watch the polarity! 4. Solder the box power header. Make sure the notch lines up with the screenprint legend. If in doubt, have a look at a power cable, and make sure when inserted into the header the red stripe lines up with the -12V screenprint.
  • Page 4 Pots ‘n’ sockets PCB 1. Solder all of the toggle switches. Please note that there are 2 on/on switches and 4 on/off/on switches, the lower 4 switches are all on/off/on type. The back of the PCB is your friend here, as it states clearly either on/on or on/off/on for each switch. 2.

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