Serialpedia - Revision history

Uplink: /* Table of hardware */ Correct misidentification after confirming the version of the device that was screwy

2013-07-11T13:43:43Z

Table of hardware: Correct misidentification after confirming the version of the device that was screwy

←Older revision		Revision as of 13:43, 11 July 2013
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	\| RTI \|\| AD-8 \|\| audio matrix amplifier \|\| normal straight \|\| The manual doesn't make the type of cable clear at all		\| RTI \|\| AD-8 \|\| audio matrix amplifier \|\| normal straight \|\| The manual doesn't make the type of cable clear at all
	\|-		\|-
	\| HDAnywhere \|\| HKHA414SW_V1 \|\| HDMI matrix \|\| ~~weird crossed?~~ \|\| Identification: screws at the bottom of the back plate; two LAN ports<br>		\| HDAnywhere \|\| HKHA414SW_V1 \|\| HDMI matrix \|\| unknown \|\| Identification: screws at the bottom of the back plate; two LAN ports<br>
	Baud rate: 600~~<br>~~		Baud rate: 600
	~~Abuse the web control interface using wget/curl to control it~~
	\|-		\|-
	\| HDAnywhere \|\| HKHA414SW_V2 \|\| HDMI matrix \|\| weird crossed? \|\| Identification: screws at the top of the back plate; two LAN ports<br>		\| HDAnywhere \|\| HKHA414SW_V2 \|\| HDMI matrix \|\| weird crossed? \|\| Identification: screws at the top of the back plate; two LAN ports<br>
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	\|-		\|-
	\| HDAnywhere \|\| HKHA414SW_V3 \|\| HDMI matrix \|\| weird crossed \|\| Identification: only one LAN port (older versions have two LAN ports)<br>		\| HDAnywhere \|\| HKHA414SW_V3 \|\| HDMI matrix \|\| weird crossed \|\| Identification: only one LAN port (older versions have two LAN ports)<br>
	Baud rate: 9600		Baud rate: 9600<br>
			Encountered one model that wouldn't speak anything over serial or UDP - had to abuse the web control interface using wget/curl to control it
	\|}		\|}

Uplink: Format the tables

2013-07-08T19:20:13Z

Format the tables

Uplink: /* Table of hardware */ formatting

2013-07-08T19:17:15Z

Table of hardware: formatting

←Older revision		Revision as of 19:17, 8 July 2013
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	\| RTI \|\| AD-8 \|\| audio matrix amplifier \|\| normal straight \|\| The manual doesn't make the type of cable clear at all		\| RTI \|\| AD-8 \|\| audio matrix amplifier \|\| normal straight \|\| The manual doesn't make the type of cable clear at all
	\|-		\|-
	\| HDAnywhere \|\| HKHA414SW_V1 \|\| HDMI matrix \|\| weird crossed? \|\| Identification: screws at the bottom of the back plate; two LAN ports		\| HDAnywhere \|\| HKHA414SW_V1 \|\| HDMI matrix \|\| weird crossed? \|\| Identification: screws at the bottom of the back plate; two LAN ports<br>
	Baud rate: 600		Baud rate: 600<br>
	Abuse the web control interface using wget/curl to control it		Abuse the web control interface using wget/curl to control it
	\|-		\|-
	\| HDAnywhere \|\| HKHA414SW_V2 \|\| HDMI matrix \|\| weird crossed? \|\| Identification: screws at the top of the back plate; two LAN ports		\| HDAnywhere \|\| HKHA414SW_V2 \|\| HDMI matrix \|\| weird crossed? \|\| Identification: screws at the top of the back plate; two LAN ports<br>
	Baud rate: 600		Baud rate: 600
	\|-		\|-
	\| HDAnywhere \|\| HKHA414SW_V3 \|\| HDMI matrix \|\| weird crossed \|\| Identification: only one LAN port (older versions have two LAN ports)		\| HDAnywhere \|\| HKHA414SW_V3 \|\| HDMI matrix \|\| weird crossed \|\| Identification: only one LAN port (older versions have two LAN ports)<br>
	Baud rate: 9600		Baud rate: 9600
	\|}		\|}

Uplink: /* Table of hardware */ Update information about HDAnywhere products

2013-07-08T19:16:22Z

Table of hardware: Update information about HDAnywhere products

←Older revision		Revision as of 19:16, 8 July 2013
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	This table contains devices have have been encountered, and the type of serial cable they require for a computer to speak to them.		This table contains devices have have been encountered, and the type of serial cable they require for a computer to speak to them.

	{\| style="margin:auto; text-align:center;"		{\| class="wikitable" style="margin:auto; text-align:center;"
	! Brand !! Model !! Class !! Cable !! Notes		! Brand !! Model !! Class !! Cable !! Notes
	\|-		\|-
Line 210:		Line 210:
	\| RTI \|\| AD-8 \|\| audio matrix amplifier \|\| normal straight \|\| The manual doesn't make the type of cable clear at all		\| RTI \|\| AD-8 \|\| audio matrix amplifier \|\| normal straight \|\| The manual doesn't make the type of cable clear at all
	\|-		\|-
	\| HDAnywhere \|\| ~~HKHA414SW_V2~~ \|\| HDMI matrix \|\| ~~normal~~ crossed \|\| Baud rate: 600		\| HDAnywhere \|\| HKHA414SW_V1 \|\| HDMI matrix \|\| weird crossed? \|\| Identification: screws at the bottom of the back plate; two LAN ports
			Baud rate: 600
			Abuse the web control interface using wget/curl to control it
	\|-		\|-
	\| HDAnywhere \|\| HKHA414SW_V3 \|\| HDMI matrix \|\| ~~normal~~ crossed? \|\| ~~Serial codes don't work, UDP codes don't work,~~ have ~~to abuse the web control interface using wget/curl to control it.~~		\| HDAnywhere \|\| HKHA414SW_V2 \|\| HDMI matrix \|\| weird crossed? \|\| Identification: screws at the top of the back plate; two LAN ports
			Baud rate: 600
			\|-
			\| HDAnywhere \|\| HKHA414SW_V3 \|\| HDMI matrix \|\| weird crossed \|\| Identification: only one LAN port (older versions have two LAN ports)
			Baud rate: 9600
	\|}		\|}

Uplink: fix typo

2013-07-06T09:29:47Z

fix typo

←Older revision		Revision as of 09:29, 6 July 2013
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	This page is for all things serial (RS232, RS422, RS485): how serial cables should be ~~views~~, mistakes people make in the documentation, list of devices and the cables they require.		This page is for all things serial (RS232, RS422, RS485): how serial cables should be viewed, mistakes people make in the documentation, list of devices and the cables they require.

	= Serial theory =		= Serial theory =

Uplink: /* What is a "null modem"? */ Fix formatting of ordrered lists

2013-07-06T08:28:08Z

What is a "null modem"?: Fix formatting of ordrered lists

Uplink: /* Crossed cable - null modem */ emphasize "usually"

2013-07-06T08:26:06Z

Crossed cable - null modem: emphasize "usually"

←Older revision		Revision as of 08:26, 6 July 2013
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	=== Crossed cable - null modem ===		=== Crossed cable - null modem ===

	A crossed cable is usually cable with '''same gender at each end''' ([[#Exceptions\|see exceptions]]), with signals that come in pairs crossing over, to simulate a modem in the middle.		A crossed cable is ''usually'' cable with '''same gender at each end''' ([[#Exceptions\|see exceptions]]), with signals that come in pairs crossing over, to simulate a modem in the middle.

	Their main purpose was to connect two computers to each other, while lying to them that modems are involved.		Their main purpose was to connect two computers to each other, while lying to them that modems are involved.

Uplink: /* Signals */ Fix links

2013-07-06T08:24:49Z

Signals: Fix links

←Older revision		Revision as of 08:24, 6 July 2013
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	* * Computer = DTE is on the left side; Modem = DCE is on the right side		* * Computer = DTE is on the left side; Modem = DCE is on the right side

	I'll repeat: '''all the signals are defined from the point of view of the computer'''. This can result in much confusion, because not many people expect something (the modem) to ''transmit'' on the ''receive'' line and ''receive'' on the ''transmit'' line. There are devices which take a [#Straight_cable straight cable] but their documentation errorneously describes a [#~~Crossed_cable~~ crossed cable], for example.		I'll repeat: '''all the signals are defined from the point of view of the computer'''. This can result in much confusion, because not many people expect something (the modem) to ''transmit'' on the ''receive'' line and ''receive'' on the ''transmit'' line. There are devices which take a [[#Straight_cable\|straight cable]] but their documentation errorneously describes a [[#Crossed_cable_-_null_modem\|crossed cable]], for example.

	==== Signal pairs ====		==== Signal pairs ====

Uplink: Fix links to exceptions

2013-07-06T08:23:18Z

Fix links to exceptions

←Older revision		Revision as of 08:23, 6 July 2013
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	=== Straight cable ===		=== Straight cable ===

	A straight cable is ''usually'' a cable with '''one male end and one female end''' ([#Exceptions see exceptions]), with all pins on one end connected pins that have the same number on the other end.		A straight cable is ''usually'' a cable with '''one male end and one female end''' ([[#Exceptions\|see exceptions]]), with all pins on one end connected pins that have the same number on the other end.

	Their main purpose was to connect a computer to a modem.		Their main purpose was to connect a computer to a modem.
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	=== Crossed cable - null modem ===		=== Crossed cable - null modem ===

	A crossed cable is usually cable with '''same gender at each end''' ([#Exceptions see exceptions]), with signals that come in pairs crossing over, to simulate a modem in the middle.		A crossed cable is usually cable with '''same gender at each end''' ([[#Exceptions\|see exceptions]]), with signals that come in pairs crossing over, to simulate a modem in the middle.

	Their main purpose was to connect two computers to each other, while lying to them that modems are involved.		Their main purpose was to connect two computers to each other, while lying to them that modems are involved.

Uplink: /* Numbering of pins */ fix typo properly

2013-07-06T08:19:34Z

Numbering of pins: fix typo properly

←Older revision		Revision as of 08:19, 6 July 2013
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	\|		\|
	5 4 3 2 1		5 4 3 2 1
	9 7 6 5		9 8 7 6
	\|}		\|}

←Older revision		Revision as of 19:20, 8 July 2013
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	[https://en.wikipedia.org/wiki/Serial_port#Pinouts Serial port pinouts]		[https://en.wikipedia.org/wiki/Serial_port#Pinouts Serial port pinouts]

	{\| style="margin:auto; text-align:center;"		{\| class="wikitable" style="margin:auto; text-align:center;"
	! Pin !! Abbreviation !! Name !! Direction* !! Description		! Pin !! Abbreviation !! Name !! Direction* !! Description
	\|-		\|-
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	The signals that work in pairs are:		The signals that work in pairs are:

	{\| style="margin:auto; text-align:center;"		{\| class="wikitable" style="margin:auto; text-align:center;"
	! Pair !! Description		! Pair !! Description
	\|-		\|-
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	=== Numbering of pins ===		=== Numbering of pins ===
	When looking at the DE-9 from the front, the pins are numbered like this:		When looking at the DE-9 from the front, the pins are numbered like this:
	{\| style="margin:auto; text-align:center;"		{\| class="wikitable" style="margin:auto; text-align:center;"
	! Male DE-9 !! Female DE-9		! Male DE-9 !! Female DE-9
	\|-		\|-
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	Their main purpose was to connect a computer to a modem.		Their main purpose was to connect a computer to a modem.

	{\| style="margin:auto; text-align:center;"		{\| class="wikitable" style="margin:auto; text-align:center;"
	! Male DE-9 !! Signal !! Female DE-9		! Male DE-9 !! Signal !! Female DE-9
	\|-		\|-
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	In practice, you'll need a simplified 3-wire cable only:		In practice, you'll need a simplified 3-wire cable only:

	{\| style="margin:auto; text-align:center;"		{\| class="wikitable" style="margin:auto; text-align:center;"
	! Male DE-9 !! Signal !! Female DE-9		! Male DE-9 !! Signal !! Female DE-9
	\|-		\|-
Line 116:		Line 116:
	Their main purpose was to connect two computers to each other, while lying to them that modems are involved.		Their main purpose was to connect two computers to each other, while lying to them that modems are involved.

	{\| style="margin:auto; text-align:center;"		{\| class="wikitable" style="margin:auto; text-align:center;"
	! Left DE-9 !! Left Signal !! Right Signal !! Right DE-9		! Left DE-9 !! Left Signal !! Right Signal !! Right DE-9
	\|-		\|-
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	In practice, you'll need a simplified 3-wire cable only:		In practice, you'll need a simplified 3-wire cable only:

	{\| style="margin:auto; text-align:center;"		{\| class="wikitable" style="margin:auto; text-align:center;"
	! Left DE-9 !! Left Signal !! Right Signal !! Right DE-9		! Left DE-9 !! Left Signal !! Right Signal !! Right DE-9
	\|-		\|-

←Older revision		Revision as of 08:28, 6 July 2013
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	The order of operations is this:		The order of operations is this:

	1. Computer 1 sends data out through its TxD pin (2)		# Computer 1 sends data out through its TxD pin (2)
	2. Modem 1 receives data on its TxD pin (2)		# Modem 1 receives data on its TxD pin (2)
	3. Modem 1 sends the data to Modem 2 through the telephone network		# Modem 1 sends the data to Modem 2 through the telephone network
	4. Modem 2 receives the data from Modem 1 through the telephone network		# Modem 2 receives the data from Modem 1 through the telephone network
	5. Modem 2 sends data though its RxD pin (3)		# Modem 2 sends data though its RxD pin (3)
	6. Computer 2 receives data through its RxD pin (3)		# Computer 2 receives data through its RxD pin (3)

	Remember that the signal lines are named relative to the computer, not the modem.		Remember that the signal lines are named relative to the computer, not the modem.
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	If we abstract the modem, the order of operations becomes:		If we abstract the modem, the order of operations becomes:

	1. Computer 1 sends data out through its TxD pin (2)		# Computer 1 sends data out through its TxD pin (2)
	2. Computer 2 receives data through its RxD pin (3)		# Computer 2 receives data through its RxD pin (3)

	The other pins that cross over are RTS to CTS, and DTR to DSR. This is so that one computer appears to be a modem to the other computer. Or so that a modem appears to be between them, happily signaling backwards and forwards. Pin 1 is jumpered to Pin 6 to piggy back on the other computer's DTR signal, completing the modem-in-the-middle illusion.		The other pins that cross over are RTS to CTS, and DTR to DSR. This is so that one computer appears to be a modem to the other computer. Or so that a modem appears to be between them, happily signaling backwards and forwards. Pin 1 is jumpered to Pin 6 to piggy back on the other computer's DTR signal, completing the modem-in-the-middle illusion.