Author Topic: CPC Audio Channel Test Program  (Read 1043 times)

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Offline Syncmaster319

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CPC Audio Channel Test Program
« on: 02:53, 01 January 20 »
Hi All,

In the next few days I'm going to installing a panel mount 3.5mm audio jack to a 464 that has destroyed solder pads.  I must confess I botched the repair 25 years ago as a kid and have been reunited this xmas to discover the horror.

Is there a test program I can use to determine if I wired the channels correctly eg L/R after the repair?

Thanks :)


PS I should mention I have a M4 board from Duke to test


« Last Edit: 02:59, 01 January 20 by Syncmaster319 »

Offline Gryzor

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Re: CPC Audio Channel Test Program
« Reply #1 on: 11:11, 01 January 20 »
Aren't channels fixed, L/R?

Offline Bryce

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Re: CPC Audio Channel Test Program
« Reply #2 on: 12:51, 01 January 20 »
How badly did you destroy the original socket? You can always superglue the socket in place and run jumper wires, rather than making a new hole in the case.

Bryce.

Offline mr_lou

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Re: CPC Audio Channel Test Program
« Reply #3 on: 08:41, 02 January 20 »
You can test the channels with simple SOUND commands in BASIC:

SOUND 1,440,100,15 should produce a sound in the right speaker.
SOUND 2,440,100,15 should produce a sound in both speakers.
SOUND 4,440,100,15 should produce a sound in the left speaker.

Offline Bryce

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Re: CPC Audio Channel Test Program
« Reply #4 on: 12:04, 02 January 20 »
The pinout is a standard, and in this case, suprisingly one that Amstrad actually stuck to: https://i.pinimg.com/originals/4b/58/9f/4b589f6f2a795390476033df660f95b0.png

Bryce.

Offline Lazy Dude

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Re: CPC Audio Channel Test Program
« Reply #5 on: 17:09, 02 January 20 »
The original 3.5mm sockets are not the greatest quality. If you are panel mounting, get a cliff electronics one, they are super sturdy.

Offline Bryce

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Re: CPC Audio Channel Test Program
« Reply #6 on: 17:22, 02 January 20 »
The original 3.5mm sockets are not the greatest quality. If you are panel mounting, get a cliff electronics one, they are super sturdy.

Eh, the original Amstrad socket is a design that Cliff Electronics sell too :D Part No. FC68131.

Bryce.

Offline Lazy Dude

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Re: CPC Audio Channel Test Program
« Reply #7 on: 17:28, 02 January 20 »
Yeh, I did think that. I had in mind the chunky bodied bridge contact sort.
The following is pcb mount only but they do panel mount (mono only from what I see!)

FCR1295
« Last Edit: 17:31, 02 January 20 by Lazy Dude »