configuring broadband/PC power protection/cable-satellite TV in India...

Dilliwala · Feb 23rd, 2008, 01:48

The invertor shudn't affect the DSL speed.

Nick-H · Feb 23rd, 2008, 02:03

Doesn't it make the motor in the modem run faster or slower if the voltage changes?

Dilliwala · Feb 23rd, 2008, 02:10

I thought about that, which is why I said shudn't rather than won't! Mine's bus-powered and therefore doesn't "suffer" from UPS power, which is why I can't say for sure.
I do recall that when I had a mains/UPS-powered dialup modem, the bloody thing used to slow down even further whenever the power went. But I'm thinking DSL's a different 'wave' altogether, so maybe not.....

Nick-H · Feb 23rd, 2008, 02:17

You have a bus outside your place providing power?

Have you looked at the small diesel generators that are available these days?

.

.

.

.

.

.

I think its time I went to bed

Dilliwala · Feb 23rd, 2008, 02:24

Quote:

Originally Posted by Nick-H

You have a bus outside your place providing power?

Have you looked at the small diesel generators that are available these days?

I think its time I went to bed

So do I.

Ok, for the less-enlightened, mine's powered directly off the PC's system-bus. (Don't ask me to explain further, I'm already at the outer limit of my tech-speak).

Aishah · Feb 23rd, 2008, 22:17

Bus power??? My invertor is powered by 2 truck batteries!! When I use invertor it doesn't make much difference to the speed at all. Sometimes modem needs re-setting on changeover, sometimes not. No big deal. I've now learned if the winking light comes on it simply means the LAN connection is getting ready or the BSNL server is out of action. This happens daily at some point or other. It comes back again eventually. Fraudband, Nick - I think I agree with you here!

Nick-H · Feb 23rd, 2008, 23:13

Serial ports, to which real modems (dial-up) are connected have a thing called a UART.

The data in a computer is parallel. That is, roughly, 8-bit data moves along eight parallel paths.

But in a serial connection, the bits follow oneanother down a single path.

So the UART is like a water wheel, moving along the parallel paths, collecting one bit from each, and pouring it into the single-line serial connector. This is definitely voltage sensitive, as a power drop will cause the wheel to slow down.

I know this, because this is exactly how it looked in the text books.

If you're not very careful, I might explain about serial mice, bus mice and dedicated mice...

brownboy66 · Feb 24th, 2008, 00:01

time to call pest control.....

UART - goodness, haven't heard that in a long time. Next will come the discussion of 16450 versus 16550 UART with FIFO (remember FIFO nick)?

Aishah · Feb 24th, 2008, 08:08

Okay, bb, don't keep us in 'suspenders' (me anyway) - what is FIFO? In simple layman's terms please!
Interesting explanation, thanks Nick.
How do you know if you have a serial port, serial connection etc?
Speaking of serials, this thread is a bit like one too!

Nick-H · Feb 24th, 2008, 08:41

FIFO is easy: first in, first out. Errr... I think!

GIGO is a more interesting concept, an perhaps applicable to my current series of posts

UARTS... yes, it sticks in the mind... but I never had more than a layman's appreciation of what they do.

The 9- pin "D" connector on the back of your PC will be a serial port. Desktops probably still have them, I don't know about laptops. Maybe, as dial up modems do still exist, but I suppose laptops tend to have them built in.

brownboy66 · Feb 24th, 2008, 10:53

Quote:

Originally Posted by Nick-H

FIFO is easy: first in, first out. Errr... I think!

GIGO is a more interesting concept, an perhaps applicable to my current series of posts

Not at all - good interesting stuff. Ah yes - if you've ever done help desk support or systems admin then GIGO will definitely be present.

spot on with FIFO too.

Quote:

The 9- pin "D" connector on the back of your PC will be a serial port. Desktops probably still have them, I don't know about laptops. Maybe, as dial up modems do still exist, but I suppose laptops tend to have them built in.

I would guess external modems would be the only reason for having serial port these days - given that most other devices can connect via USB?

Nick-H · Feb 24th, 2008, 11:19

Yes, I think so, even the parallel port for the printer is seldom needed these days.

I used to have the wiring for 25-pin serial in my head, for connecting terminals. I now realise it isn't there any longer! Well, in some dusty, dim braincell, I guess... Even had a vague idea what some of those signals did, and why what was connected to what! And using a breakout box, with its pretty lights, was always a certainty to impress the customer, whether I understood it or not!

Aishah · Feb 24th, 2008, 11:55

GIGO? no idea what you blokes are joking about.. Going In, Getting Out? My laptop just has ethernet and USB from what I can make out re ports. Is this all superseded technology?
Talking of printers - where do I connect it to if I get one? Mmm - some funny looking places around the laptop (why don't they give you a decent handbook when you buy these - I only had a receipt with guarantee plus a bit of advertising paper) I really would like to know what all the keys do. I looked for books in Delhi but they were so outdated. A handbook for this model would be brilliant.
I'll wait for the expert to tell me about setting up the printer I think..lucky I have found one!

Nick-H · Feb 24th, 2008, 12:07

Nearly all printers (if not all) come with USB connection these days. Just check that it does.

Hint: compare the cost of replacement cartridges before buying, and get one with individual-colour cartridges, not just one, or one black and one colour.

I like my Canon, but I don't know about comparative costings.

Aishah · Feb 24th, 2008, 12:42

I think just black will do me for the sort of work I need it to do - which isn't too much. Currently I have to go to market to print off anything. I'm hoping this sort of outdated type of model might prove cheaper! Canon is a good brand, thanks for advice, Nick.
(OT - Nick you will laugh at this! I need a new proof of address - and only yesterday I figured I could do it myself on my Microsoft office (which I've never used before) then send it as an attachment to myself, then go to market and print it off! Mr K takes it to the local notary for attesting and stamped with govt. stamp. To date, I've written three proofs of address myself and this has been done and accepted - the first I had to find a typewriter in the market.)

Feb 23rd, 2008, 02:03	#302
Nick-H Loud-mouthed, Noisy Bird Join Date: Oct 2004 Location: Chennai, India Posts: 26,819	Doesn't it make the motor in the modem run faster or slower if the voltage changes? __________________ . Just one member of the IndiaMike Mod Team

Feb 23rd, 2008, 22:17	#306
Aishah She-who-must-be-obeyed! Join Date: Mar 2007 Location: Jaisalmer Posts: 5,002	Bus power??? My invertor is powered by 2 truck batteries!! When I use invertor it doesn't make much difference to the speed at all. Sometimes modem needs re-setting on changeover, sometimes not. No big deal. I've now learned if the winking light comes on it simply means the LAN connection is getting ready or the BSNL server is out of action. This happens daily at some point or other. It comes back again eventually. Fraudband, Nick - I think I agree with you here! __________________ "Life can only be understood backwards, but it must be lived forwards."

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Feb 23rd, 2008, 01:48	#301
Dilliwala Funky flunky Join Date: May 2007 Location: Dilli Posts: 3,561	The invertor shudn't affect the DSL speed.

Feb 23rd, 2008, 02:10	#303
Dilliwala Funky flunky Join Date: May 2007 Location: Dilli Posts: 3,561	I thought about that, which is why I said shudn't rather than won't! Mine's bus-powered and therefore doesn't "suffer" from UPS power, which is why I can't say for sure. I do recall that when I had a mains/UPS-powered dialup modem, the bloody thing used to slow down even further whenever the power went. But I'm thinking DSL's a different 'wave' altogether, so maybe not.....

Feb 23rd, 2008, 02:17	#304
Nick-H Loud-mouthed, Noisy Bird Join Date: Oct 2004 Location: Chennai, India Posts: 26,819	You have a bus outside your place providing power? Have you looked at the small diesel generators that are available these days? . . . . . . I think its time I went to bed

Feb 23rd, 2008, 23:13	#307
Nick-H Loud-mouthed, Noisy Bird Join Date: Oct 2004 Location: Chennai, India Posts: 26,819	Serial ports, to which real modems (dial-up) are connected have a thing called a UART. The data in a computer is parallel. That is, roughly, 8-bit data moves along eight parallel paths. But in a serial connection, the bits follow oneanother down a single path. So the UART is like a water wheel, moving along the parallel paths, collecting one bit from each, and pouring it into the single-line serial connector. This is definitely voltage sensitive, as a power drop will cause the wheel to slow down. I know this, because this is exactly how it looked in the text books. If you're not very careful, I might explain about serial mice, bus mice and dedicated mice...

Feb 24th, 2008, 00:01	#308
brownboy66 Chicken 65 Join Date: Apr 2007 Location: New Delhi Posts: 2,261	time to call pest control..... UART - goodness, haven't heard that in a long time. Next will come the discussion of 16450 versus 16550 UART with FIFO (remember FIFO nick)?

Feb 24th, 2008, 08:08	#309
Aishah She-who-must-be-obeyed! Join Date: Mar 2007 Location: Jaisalmer Posts: 5,002	Okay, bb, don't keep us in 'suspenders' (me anyway) - what is FIFO? In simple layman's terms please! Interesting explanation, thanks Nick. How do you know if you have a serial port, serial connection etc? Speaking of serials, this thread is a bit like one too!

Feb 24th, 2008, 08:41	#310
Nick-H Loud-mouthed, Noisy Bird Join Date: Oct 2004 Location: Chennai, India Posts: 26,819	FIFO is easy: first in, first out. Errr... I think! GIGO is a more interesting concept, an perhaps applicable to my current series of posts UARTS... yes, it sticks in the mind... but I never had more than a layman's appreciation of what they do. The 9- pin "D" connector on the back of your PC will be a serial port. Desktops probably still have them, I don't know about laptops. Maybe, as dial up modems do still exist, but I suppose laptops tend to have them built in.

Feb 24th, 2008, 11:19	#312
Nick-H Loud-mouthed, Noisy Bird Join Date: Oct 2004 Location: Chennai, India Posts: 26,819	Yes, I think so, even the parallel port for the printer is seldom needed these days. I used to have the wiring for 25-pin serial in my head, for connecting terminals. I now realise it isn't there any longer! Well, in some dusty, dim braincell, I guess... Even had a vague idea what some of those signals did, and why what was connected to what! And using a breakout box, with its pretty lights, was always a certainty to impress the customer, whether I understood it or not!

Feb 24th, 2008, 11:55	#313
Aishah She-who-must-be-obeyed! Join Date: Mar 2007 Location: Jaisalmer Posts: 5,002	GIGO? no idea what you blokes are joking about.. Going In, Getting Out? My laptop just has ethernet and USB from what I can make out re ports. Is this all superseded technology? Talking of printers - where do I connect it to if I get one? Mmm - some funny looking places around the laptop (why don't they give you a decent handbook when you buy these - I only had a receipt with guarantee plus a bit of advertising paper) I really would like to know what all the keys do. I looked for books in Delhi but they were so outdated. A handbook for this model would be brilliant. I'll wait for the expert to tell me about setting up the printer I think..lucky I have found one!

Feb 24th, 2008, 12:07	#314
Nick-H Loud-mouthed, Noisy Bird Join Date: Oct 2004 Location: Chennai, India Posts: 26,819	Nearly all printers (if not all) come with USB connection these days. Just check that it does. Hint: compare the cost of replacement cartridges before buying, and get one with individual-colour cartridges, not just one, or one black and one colour. I like my Canon, but I don't know about comparative costings.

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Feb 24th, 2008, 12:42	#315
Aishah She-who-must-be-obeyed! Join Date: Mar 2007 Location: Jaisalmer Posts: 5,002	I think just black will do me for the sort of work I need it to do - which isn't too much. Currently I have to go to market to print off anything. I'm hoping this sort of outdated type of model might prove cheaper! Canon is a good brand, thanks for advice, Nick. (OT - Nick you will laugh at this! I need a new proof of address - and only yesterday I figured I could do it myself on my Microsoft office (which I've never used before) then send it as an attachment to myself, then go to market and print it off! Mr K takes it to the local notary for attesting and stamped with govt. stamp. To date, I've written three proofs of address myself and this has been done and accepted - the first I had to find a typewriter in the market.)