Hi
Currently fuzzing around with a Max232 and I got some questions about the level converting.
This is my current setup:
http://i.imgur.com/NpnCd.png
Idle: http://i40.tinypic.com/332uydj.png
Sending data: http://i41.tinypic.com/se62jk.jpg
Channel 1 is TTL
Channel 2 is RS232
What I dont get, is why my leds are lit all the time.
As you can see on the first scope-shot TTL is idling on 5v and RS232 on -8v
This way, my leds wont blink when data is sent/recieved.
Is there something wrong with my circuit or is this intended?
Edit: VCC and GND for max232 is hidden on the schematic.
Currently fuzzing around with a Max232 and I got some questions about the level converting.
This is my current setup:
http://i.imgur.com/NpnCd.png
Idle: http://i40.tinypic.com/332uydj.png
Sending data: http://i41.tinypic.com/se62jk.jpg
Channel 1 is TTL
Channel 2 is RS232
What I dont get, is why my leds are lit all the time.
As you can see on the first scope-shot TTL is idling on 5v and RS232 on -8v
This way, my leds wont blink when data is sent/recieved.
Is there something wrong with my circuit or is this intended?
Edit: VCC and GND for max232 is hidden on the schematic.
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