What does this symbol mean, almost = ?

What does this symbol mean, almost = ?
I bought a used Diamond external modem made in Canada that has by the jack for the power input: 6v = . This is all it had.
Looking more closely at what seemed to be an equal sign I saw that, enlarged, to take up 2 lines instead of just one: it looked like this:
_____ . _ .
What does this symbol mean? It's either AC or DC but no one I've asked is sure. If it's DC, is the center pin positive or negative?
Inaccuracies in the sketch above: The dots should be at the same height as the line between them. The lower line and dots are a bit thinner than the top line. Is that significant. ?
(Diamond was sold last fall so I can't really ask them.)
Meirman
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I believe it means DC, and represents a constant voltage (dashed line) above neutral (solid line).
FYI I have seen AC represented in a similar fashion using ~ to represent a sine wave.
Hope this helps.
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DesignGuy wrote:

Hi, It means DC(Direct Current) ~ is AC. Tony
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In alt.home.repair on Thu, 08 Apr 2004 23:44:23 GMT "DesignGuy"

I would never used a dashed line to represent constant voltage, but I'm convinced now that they did.

This makes a big difference. I don't see how anyone figure this out if they don't know about the AC symbol.

Yes, thanks to you and Tony.
Meirman
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The Diamond SupraExpress 56K modem I have has that symbol on it (hadn't paid attention to it before). It does have an Industry Canada sticker on it (maybe some sort of approval), but was made in USA. Power supply is:
Input: 120V AC 60Hz 8W Output: 6V DC 500mA center pin is plus (+)
If you are looking for a power supply, Radio Shack may have one with assorted plugs, one of which should fit.
--
David Efflandt - All spam ignored http://www.de-srv.com /

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In alt.home.repair on Fri, 9 Apr 2004 00:36:49 +0000 (UTC) snipped-for-privacy@xnet.com (David Efflandt) posted:

Thank you, thank you, thank you. Yes, mine is the same model! Maybe I should have said more than brand -- it too is a Diamond SupraExpress 56K modem. You're right, it doesn't say made in Canada, or the US, so I had assumed the sticker was because it was made in Canada.
I don't know how anyone is supposed to know the center pin is + from what little they put on the case. If you hadn't told me I wouldn't know.

Yes, I was just there yesterday aamof. For a plug for a phone machine. Used to be there were only 2, then 5, plugs and they made adaptors with multiple voltages and all 5 plugs. But now there are about 20 different plugs and the phone machine used one thinner than any I had, and yeah, you're right, this seems to use the same size. This makes the third thing in 3 months that I've gotten used that uses this size I've never seen before. What a coincidence. And this means by coincidence yesterday, I got the very plug I need for this. I can use it for this now, and still use it to fix up the other thing.
The www.diamondmm.com site still had drivers for most models before Sept 1, 2003, and even something called a "56e Memory Firmware upgrades" (e for external, I'm sure) but otherwise they seem to have abandoned former lines of modems except SupraMax. They say "Special Offer For Previous Diamond Customers If you purchased a Diamond graphic card or SupraMax modem before September 2003, you may return your previous Diamond product and receive major savings on a new Diamond product of your choice! Use the form below to request a list of products and discounts. This is a limited time offer and some restrictions apply. Limit one per customer. "
Meirman
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(parts snipped)

Mine has been faultless with its defaults. I initially purchased the external modem because my ISP had equipment at the time (Livingston Portmaster) that would totally lock up my internal hardware modem (k56 flashed to V.90), requiring reboot in any OS. The SupraExpress 56K worked uninterrupted on same ISP for 11 hour ftp install of FreeBSD. At another time I downloaded an entire CD image, which I did as resumed download 8 hrs/night for 5 nights (~40 hrs total).
But I am on adsl now, so I just use the Diamond for backup or if I misplace the modem card for my laptop. It did come in handy when DSL was interrupted during a move.
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In alt.home.repair on Sat, 10 Apr 2004 14:53:13 +0000 (UTC) snipped-for-privacy@xnet.com (David Efflandt) posted:

That's great. Of course, yours might be newer than mine (and mine even might be broken since I got it second hand, although almost all the stuff I get at hamfests works)

That sounds great too. I was in good shape, get connections above 50,000 until last September, when it started disconnecting me all the time. In January I noticed that the telephone pole that serves our little n'hood (100 townhouses) had fallen down, and the cable lay across a stream and in a stream bed that floods in the rain, covering 40 feet of the cable maybe. The phone guy said it's sealed and maybe even under pressure, but that's still a possible source of trouble Although when I call a different ISP, I have no trouble, so it's probably not the cable by my house. And I think the pole fell down** during Hurricane Isabel and I'm pretty sure the ISP was hanging up on me a month before that.
**It didn't really *fall* down. A tree fell down and landed on the cable, and that snapped the telephone pole, almost half way up. They said it was a low priority because all our phones worked and it wasn't obstructing anything (it's in the woods) but then the phone guy called me only two days later to see if it was fixed yet.

I'm sure. I was going to hook it up last night, but instead of buying two of those plugs that plug only in to RadioShack power adapaters, for 5 dollars apiece, and I will have to solder and shrinkwrap, I'm going to see if the one they have of a similar size designed to be soldered on and half the price will fit this and the new/used phone machine. The Radio Shack website now will show you part availability by store!! It shows the 5 stores nearest the zipcode I enter, and 2 are out of it, 2 say free shipping if ordered in the store, and one that I will have time to go to on Monday has at least one of them in stock, if the computer is right. www.mouser.com also has them** for between .87 cents and 1.21, and in the past I've ordered a bunch from them. But I want this right away and the shipping cost eliminates any savings. **Well, not the same size as the RS adaptaplug, 3 x 1.1mm that I know fits, but the same size as the solder plug that RS has, 3.4 x 1.3mm
Meirman
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