518 - Revision history

JL: /* PC/104 key pins */ +twisted pairs

2022-02-17T17:47:51Z

PC/104 key pins: +twisted pairs

← Older revision		Revision as of 12:47, 17 February 2022
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	* '''Modify the base board.''' Remove the key plugs from the lower board. Typically this can be done by prying up the plugs with a sharp pin and then pulling them out.		* '''Modify the base board.''' Remove the key plugs from the lower board. Typically this can be done by prying up the plugs with a sharp pin and then pulling them out.
	* '''Modify the 518 board.''' On the 518 board, cut pins B10 and C19 and, if necessary, install key plugs. Note that once this is done, the board can no longer be replaced under warranty, and it may not be repairable if the wrong pins have been cut.		* '''Modify the 518 board.''' On the 518 board, cut pins B10 and C19 and, if necessary, install key plugs. Note that once this is done, the board can no longer be replaced under warranty, and it may not be repairable if the wrong pins have been cut.

			==Twisted pairs==

			If desired, twisted pairs can be used in field wiring to reduce common-mode noise:
			* An independent twisted pair should be used for every differential input pair (e.g., SH0/SL0).
			* If excitation is used, an independent twisted pair should be used for every excitation signal pair (e.g., PH0/PL0).

	==Revision V changes==		==Revision V changes==

JL: /* Revision Y changes */

2022-01-10T19:22:22Z

Revision Y changes

← Older revision		Revision as of 14:22, 10 January 2022
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	Rev Y changes:		Rev Y changes:
	* Address decoders have been added to implement full 16-bit I/O address decoding.		* Address decoders have been added to implement full 16-bit I/O address decoding.
	* Shunt locations have been added to ~~allow expanded~~ choices for user selection of the board's base address.		* Shunt locations have been added to expand choices for user selection of the board's base address.

	Although the board decodes all system address lines, some board address bits do not have an associated shunt position. These board address bits (marked "---" in the table below) are implicitly programmed '0', and thus require the associated system address lines to be '0' when accessing the board.		Although the board decodes all system address lines, some board address bits do not have an associated shunt position. These board address bits (marked "---" in the table below) are implicitly programmed '0', and thus require the associated system address lines to be '0' when accessing the board.

	System address: A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0		System address: A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0
	Shunt position: E14 --- --- --- E10 E9 E8 E7 E6 E5 E4 E3 E2 E1 --- ---		Shunt position: E14 --- --- --- E10 E9 E8 E7 E6 E5 E4 E3 E2 E1 --- ---
	Board address: N '0' '0' '0' N N N N N N N N N N '0' '0'		Board address: N '0' '0' '0' N N N N N N N N N N '0' '0'
			Nibble bounds: \| \| \| \| \|

	where: N = '0' when shunt installed; N = '1' when shunt removed		where: N = '0' when shunt installed; N = '1' when shunt removed

			;Example

			Set base address to 0x02B0:

			0x02B0 = binary 0000_0010_1011_0000

			Install E14, E10, E9, E7, E5, E2, E1

	==Thermocouple reference junction sensor==		==Thermocouple reference junction sensor==

JL: /* Revision Y changes */ +content

2022-01-10T19:11:24Z

Revision Y changes: +content

← Older revision		Revision as of 14:11, 10 January 2022
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	==Revision Y changes==		==Revision Y changes==

			Rev Y changes:
			* Address decoders have been added to implement full 16-bit I/O address decoding.
			* Shunt locations have been added to allow expanded choices for user selection of the board's base address.

			Although the board decodes all system address lines, some board address bits do not have an associated shunt position. These board address bits (marked "---" in the table below) are implicitly programmed '0', and thus require the associated system address lines to be '0' when accessing the board.

			System address: A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0
			Shunt position: E14 --- --- --- E10 E9 E8 E7 E6 E5 E4 E3 E2 E1 --- ---
			Board address: N '0' '0' '0' N N N N N N N N N N '0' '0'

			where: N = '0' when shunt installed; N = '1' when shunt removed

	==Thermocouple reference junction sensor==		==Thermocouple reference junction sensor==

JL: /* Revision V changes */ +section: Revision Y changes

2022-01-10T18:40:39Z

Revision V changes: +section: Revision Y changes

← Older revision		Revision as of 13:40, 10 January 2022
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	* Board power consumption changed from 1340 mW to 1500 mW.		* Board power consumption changed from 1340 mW to 1500 mW.
	* On-board clock frequency increased. As a result, boot-up time (fault duration after reset) is shorter and commands execute faster.		* On-board clock frequency increased. As a result, boot-up time (fault duration after reset) is shorter and commands execute faster.

			==Revision Y changes==

	==Thermocouple reference junction sensor==		==Thermocouple reference junction sensor==

JL: /* Troubleshooting */

2021-04-02T13:54:55Z

Troubleshooting

← Older revision		Revision as of 08:54, 2 April 2021
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	Here are some troubleshooting techniques you can use if you encounter problems with a 518 board:		Here are some troubleshooting techniques you can use if you encounter problems with a 518 board:

	* Verify that all required power supply voltages are applied to the board.		* Verify that all required power supply voltages are applied to the board and that they are all within the specified tolerances.
	* Make sure the latest device driver and DLL are installed; these can be found [http://www.sensoray.com/518 here] on the Downloads tab.		* Make sure the latest device driver and DLL are installed; these can be found [http://www.sensoray.com/518 here] on the Downloads tab.
	* Determine if your CPU is properly communicating with the 518: try reading the board's model number (should be 518) and firmware version (should be 2.25 or higher). If this doesn't work then:		* Determine if your CPU is properly communicating with the 518: try reading the board's model number (should be 518) and firmware version (should be 2.25 or higher). If this doesn't work then:
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	* Verify that you have properly connected external devices per sensor wiring recommendations.		* Verify that you have properly connected external devices per sensor wiring recommendations.
	* Measure the sensor signals at the board's 40-pin header and verify they are correct.		* Measure the sensor signals at the board's 40-pin header and verify they are correct.
	* If some channels are behaving normally, swap inputs between the good/bad channels to determine if the problem is the board or ~~the~~ external ~~signal~~.		* If some channels are behaving normally and others are not, swap inputs between the good/bad channels to determine if the problem is the board or external signals.
	* Disconnect the 40-pin cable from the 518. The data on all channels should "float" to arbitrary values. If the data values don't change, try rubbing a finger across the board's 40-pin header. If the data values still don't change -- ''and you have verified that correct power is applied to the board'' -- then it's likely the board is malfunctioning.		* Disconnect the 40-pin cable from the 518. The data on all channels should "float" to arbitrary values. If the data values don't change, try rubbing a finger across the board's 40-pin header. If the data values still don't change -- ''and you have verified that correct power is applied to the board'' -- then it's likely the board is malfunctioning.

	[[Category:Products]]		[[Category:Products]]

JL: /* Troubleshooting */

2021-04-02T13:47:38Z

Troubleshooting

← Older revision		Revision as of 08:47, 2 April 2021
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	* Verify that all required power supply voltages are applied to the board.		* Verify that all required power supply voltages are applied to the board.
	* Make sure ~~you have installed~~ the latest device driver and DLL; these can be found [http://www.sensoray.com/518 here] on the Downloads tab.		* Make sure the latest device driver and DLL are installed; these can be found [http://www.sensoray.com/518 here] on the Downloads tab.
	* Determine if your CPU is properly communicating with the 518: try reading the board's model number (should be 518) and firmware version (should be 2.25 or higher). If ~~it is not communicating~~ then:		* Determine if your CPU is properly communicating with the 518: try reading the board's model number (should be 518) and firmware version (should be 2.25 or higher). If this doesn't work then:
	** Check the 518's address programming shunts and make sure they match your desired board address and are correctly installed.		** Check the 518's address programming shunts and make sure they match your desired board address and are correctly installed.
	** Check your CPU's I/O port map. Make sure the 518 address you selected is reachable and doesn't conflict with other devices (including internal devices on your CPU board).		** Check your CPU's I/O port map. Make sure the 518 address you selected is reachable and doesn't conflict with other devices (including internal devices on your CPU board).
Line 112:		Line 112:
	* Measure the sensor signals at the board's 40-pin header and verify they are correct.		* Measure the sensor signals at the board's 40-pin header and verify they are correct.
	* If some channels are behaving normally, swap inputs between the good/bad channels to determine if the problem is the board or the external signal.		* If some channels are behaving normally, swap inputs between the good/bad channels to determine if the problem is the board or the external signal.
	* Disconnect the 40-pin cable from the 518. The data on all channels should "float" to arbitrary values. ~~Try~~ rubbing a finger across the board's 40-pin header if data values don't change~~. If the data sticks at zero~~ -- and you ~~are certain~~ correct power is applied to the board -- then it's likely the board is malfunctioning.		* Disconnect the 40-pin cable from the 518. The data on all channels should "float" to arbitrary values. If the data values don't change, try rubbing a finger across the board's 40-pin header. If the data values still don't change -- ''and you have verified that correct power is applied to the board'' -- then it's likely the board is malfunctioning.

	[[Category:Products]]		[[Category:Products]]

JL: /* Troubleshooting tips */

2021-04-02T13:40:24Z

Troubleshooting tips

← Older revision		Revision as of 08:40, 2 April 2021
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	{{Clear}}		{{Clear}}

	==Troubleshooting ~~tips~~==		==Troubleshooting==

	Here are some troubleshooting techniques you can use if you encounter problems with a 518 board:		Here are some troubleshooting techniques you can use if you encounter problems with a 518 board:
Line 106:		Line 106:
	* Verify that all required power supply voltages are applied to the board.		* Verify that all required power supply voltages are applied to the board.
	* Make sure you have installed the latest device driver and DLL; these can be found [http://www.sensoray.com/518 here] on the Downloads tab.		* Make sure you have installed the latest device driver and DLL; these can be found [http://www.sensoray.com/518 here] on the Downloads tab.
	* Determine if your CPU is properly communicating with the 518: try reading the board's model number (should be 518) and firmware version (should be 2.25 or higher). If it is not communicating ~~properly~~ then:		* Determine if your CPU is properly communicating with the 518: try reading the board's model number (should be 518) and firmware version (should be 2.25 or higher). If it is not communicating then:
	** Check the 518's address programming shunts and make sure they match your desired board address and are correctly installed.		** Check the 518's address programming shunts and make sure they match your desired board address and are correctly installed.
	** Check your CPU's I/O port map. Make sure the 518 address you selected is reachable and doesn't conflict with other devices (including internal devices on your CPU board).		** Check your CPU's I/O port map. Make sure the 518 address you selected is reachable and doesn't conflict with other devices (including internal devices on your CPU board).

JL: /* Troubleshooting tips */

2021-04-02T13:35:09Z

Troubleshooting tips

← Older revision		Revision as of 08:35, 2 April 2021
Line 106:		Line 106:
	* Verify that all required power supply voltages are applied to the board.		* Verify that all required power supply voltages are applied to the board.
	* Make sure you have installed the latest device driver and DLL; these can be found [http://www.sensoray.com/518 here] on the Downloads tab.		* Make sure you have installed the latest device driver and DLL; these can be found [http://www.sensoray.com/518 here] on the Downloads tab.
	* Determine if your CPU is properly communicating with the 518: try reading the board's model number (should be 518) and firmware version (should be 2.25 or higher).		* Determine if your CPU is properly communicating with the 518: try reading the board's model number (should be 518) and firmware version (should be 2.25 or higher). If it is not communicating properly then:
			** Check the 518's address programming shunts and make sure they match your desired board address and are correctly installed.
			** Check your CPU's I/O port map. Make sure the 518 address you selected is reachable and doesn't conflict with other devices (including internal devices on your CPU board).
	* Verify that you have properly connected external devices per sensor wiring recommendations.		* Verify that you have properly connected external devices per sensor wiring recommendations.
	* Measure the sensor signals at the board's 40-pin header and verify they are correct.		* Measure the sensor signals at the board's 40-pin header and verify they are correct.

JL: /* Analog connector */

2021-04-01T13:56:37Z

Analog connector

← Older revision		Revision as of 08:56, 1 April 2021
Line 56:		Line 56:

	TREF and +12V should only be used to supply operating power to an external thermocouple cold junction compensation sensor, which is unnecessary if thermocouples are not being measured.		TREF and +12V should only be used to supply operating power to an external thermocouple cold junction compensation sensor, which is unnecessary if thermocouples are not being measured.
			{{Clear}}

	===PC/104 key pins===		===PC/104 key pins===

JL at 13:55, 1 April 2021

2021-04-01T13:55:35Z

← Older revision		Revision as of 08:55, 1 April 2021
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	An A/D conversion is not invoked when you fetch sensor data; this simply returns the most recently acquired sample. If no conversions have been performed yet, the sensor data will be zero. When the board is reset, it will perform a calibration cycle before it starts scanning sensors. So, after a reset, you must wait long enough for a calibration cycle, plus a complete scan of all sensors, before you will be able to read valid data (approximately 350 ms).		An A/D conversion is not invoked when you fetch sensor data; this simply returns the most recently acquired sample. If no conversions have been performed yet, the sensor data will be zero. When the board is reset, it will perform a calibration cycle before it starts scanning sensors. So, after a reset, you must wait long enough for a calibration cycle, plus a complete scan of all sensors, before you will be able to read valid data (approximately 350 ms).

	==~~Connector pinout~~==		==Connectors==

			===Analog connector===

	[[File:SmartAD_pinout.gif\|thumb\|518 connector pinout]]		[[File:SmartAD_pinout.gif\|thumb\|518 connector pinout]]

	The connector pinout shown to the right ~~is used by model 518 and all other Sensoray Smart A/D boards except model 417~~.		The analog connector pinout is shown to the right.

	For each sensor channel x (where x is in the range 0:7):		For each sensor channel x (where x is in the range 0:7):
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	TREF and +12V should only be used to supply operating power to an external thermocouple cold junction compensation sensor, which is unnecessary if thermocouples are not being measured.		TREF and +12V should only be used to supply operating power to an external thermocouple cold junction compensation sensor, which is unnecessary if thermocouples are not being measured.

	==~~Key~~ pins==		===PC/104 key pins===

	PC/104 bus pins B10 and C19 are designated as key pins. Some modules (especially power supply modules) use these pins for ground connections. On other modules these pins are removed and key plugs are installed in the associated stack-through socket holes. On model 518 these pins are configured as bus pass-throughs (Sensoray does not remove the pins or install key plugs).		PC/104 bus pins B10 and C19 are designated as key pins. Some modules (especially power supply modules) use these pins for ground connections. On other modules these pins are removed and key plugs are installed in the associated stack-through socket holes. On model 518 these pins are configured as bus pass-throughs (Sensoray does not remove the pins or install key plugs).