Common abbreviations...?
Your Name wrote:
Hi,
I opened up a Volvo HU-415 to see what is what on the connector as I
remember last time I opened a Volvo radio there were abbreviations silk
screened on the PC board. I would appreciate it if someone can give me a
run down on the following abbreviations:
1) tel
2) speed
3) rheo
4) acc
5) batt
6) gnd
7) ct-
8) ct+
9) ant
10) can-l
11) can-h
The fr+, fr-, etc. on the other connector I understand.
I am assuming GND is ground, ACC is switched power, BATT is consatnt
voltage, ANT is the power antenna, SPEED is connected to the speedometer
(I think, as a wiring diagram from a late model Volvo has a wire going
from the radio to the instrument panel/speedometer?). I am not sure
which to hook up to the dashboard dimmer (RHEO, SPEED...?), and if I
should just disregard all the other stuff (TEL, CT-, CT+, CAN-L and CAN-
H)?
At a guess, I'd say TEL is for a car-phone link to mute the radio when the phone
is in use. RHEO is likely for "rheostat", and old term for a variable resistor
- that's likely your dashlight tie in, if the deck has an appropriate input.
The others - CT+/CT- and CAN-L/CAN-H, I have no idea... the "L" and "H" are
probably for "low" and "high" but what they affect, I can't say. If I knew
which pins they were on the diagram, it would be easier to trace them back, if
you really want to know, but I'd guess they'll end up being irrelevant to your
aftermarket deck anyway.
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