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#121
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In article , Ron Hunter
writes Prometheus wrote: In article , Ron Hunter writes Did I suggest they should remove the serial interface? I suggest that if a GPS manufacturer wants me to connect my computer to the GPS and transfer megabytes of information, then 115kbps isn't going to hack it, even if I didn't mind shutting the computer down to connect, and then disconnect the GPS (which I DO mind) I can understand the reluctance to use such a low speed connection for large amounts of data, but since changing the data would be infrequent I do not see at as a major disincentive. AS for switching the computer off to connect a serial device, WHY? I regularly connect and disconnect serial devices without switching anything off to do so, maybe it was important in the old days but modern systems are for more resilient. It's your computer, and your peripheral. Not on mine, thanks. So you do so out of superstition and not because it is necessary, how quaint (or rather foolish). Actually, very foolish, imagine waiting for a system to power down and reboot every time you change a connection; are you going to do the same with USB? Do you imagine that the electronics behind a USB port is magically different to a serial port! Let me spell it for you - I T I S N O T N E C E S S A R Y , serial devices are designed to be hot swapped. -- Ian G8ILZ |
#122
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In article , Jeremy Nixon
writes Prometheus wrote: I regularly connect and disconnect serial devices without switching anything off to do so, maybe it was important in the old days but modern systems are for more resilient. Modern systems don't have serial ports. We have modern Dells, they have serial ports. Are we to throw out all our kit equipped with a serial interface (i.e. S332D)? What do we replace it with when the manufacture's (Anritsu) latest model requires a serial port for connexion? -- Ian G8ILZ |
#123
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In article , Jeremy Nixon
writes Prometheus wrote: I regularly connect and disconnect serial devices without switching anything off to do so, maybe it was important in the old days but modern systems are for more resilient. Modern systems don't have serial ports. We have modern Dells, they have serial ports. Are we to throw out all our kit equipped with a serial interface (i.e. S332D)? What do we replace it with when the manufacture's (Anritsu) latest model requires a serial port for connexion? -- Ian G8ILZ |
#124
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Dave Head wrote:
Where does this "power cycling" thing come from? I don't powercycle anything when connecting and disconnecting RS-232 devices. This is just plain wrong. I've personally blown resistors and seen resistors blown hot-plugging serial devices. It works most of the time, but it's a really bad idea. I've never seen a problem unplugging. -- Jeremy | |
#125
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Dave Head wrote:
Where does this "power cycling" thing come from? I don't powercycle anything when connecting and disconnecting RS-232 devices. This is just plain wrong. I've personally blown resistors and seen resistors blown hot-plugging serial devices. It works most of the time, but it's a really bad idea. I've never seen a problem unplugging. -- Jeremy | |
#126
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Mxsmanic wrote:
I note the presence of serial interfaces on each of my PCs, several of which are in continual use. I suppose they have floppy drives, too? The only machine I've got with a serial port is a server, which uses a serial console. A server is not very likely to accompany me on a road trip, and thus will be less than useful for talking to a GPS unit. A serial port would be a waste of space on a laptop, just like a floppy drive would be. -- Jeremy | |
#127
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Mxsmanic wrote:
I note the presence of serial interfaces on each of my PCs, several of which are in continual use. I suppose they have floppy drives, too? The only machine I've got with a serial port is a server, which uses a serial console. A server is not very likely to accompany me on a road trip, and thus will be less than useful for talking to a GPS unit. A serial port would be a waste of space on a laptop, just like a floppy drive would be. -- Jeremy | |
#128
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In article , Ron Hunter
writes Prometheus wrote: In article , Ron Hunter writes and requires power cycling to connect and disconnect No it does not, my PCs at home and work do not; I regularly connect and disconnect their serial ports. Sigh. It is impossible to even REACH my serial port without disconnecting everything, and moving my computer desk. NOT going to happen. At work the cable is plugged into the back of the computer which is on the desk and brought round to my test bench as are the USB, IEEE488 and parallel (there is also a spare LAN socket on the bench). At home it is plugged into the back of the computer which is under the desk and brought up to the side of the monitor along with a USB cable. In the second case it is impossible to reach the connector on the rear of the computer without moving it, hence the cables are extended (is that too difficult to understand, or are you looking for an excuse not to do the job). Why do people put so much effort into doing a job badly when for less effort they could do it properly? -- Ian G8ILZ |
#129
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In article , Ron Hunter
writes Prometheus wrote: In article , Ron Hunter writes and requires power cycling to connect and disconnect No it does not, my PCs at home and work do not; I regularly connect and disconnect their serial ports. Sigh. It is impossible to even REACH my serial port without disconnecting everything, and moving my computer desk. NOT going to happen. At work the cable is plugged into the back of the computer which is on the desk and brought round to my test bench as are the USB, IEEE488 and parallel (there is also a spare LAN socket on the bench). At home it is plugged into the back of the computer which is under the desk and brought up to the side of the monitor along with a USB cable. In the second case it is impossible to reach the connector on the rear of the computer without moving it, hence the cables are extended (is that too difficult to understand, or are you looking for an excuse not to do the job). Why do people put so much effort into doing a job badly when for less effort they could do it properly? -- Ian G8ILZ |
#130
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