Spanish Spectrum 128 RGB Differences

The Spanish Spectrum 128 (Investronica Model 2.1) also provides a female 8 pin DIN (type 45326) for its monitor socket but the signals output by each pin are different. The pin-out configuration is shown below.

Spanish Spectrum 128 Monitor Socket Pinout

Pin Signal Level
1- -
20 Volts DC 0V
3Composite Video 75 ohm, 1.2V pk-pk
4Composite Sync TTL
5Bright Output TTL
6Green TTL
7Red TTL
8Blue TTL

The internal circuitry of the monitor socket is identical to that of the UK Spectrum 128.

The complete wiring of a RGB SCART lead for the Spanish Spectrum 128 is shown below.

Complete Spanish Spectrum 128 SCART Cable Circuit

Details about configuring the BLANKING and FUNCTION SWITCHING inputs of the SCART socket are as shown for the lead circuitry of the UK Spectrum 128.

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