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brujo66
n00b
Joined: 05 Jul 2004
Posts: 54
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 Posted: Sat Jun 17, 2006 11:46 am Post subject: Measurement of voltage and temperature with lm-sensors |
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Hello,
I have configurated the lm_sensors program, to measure the temperatures and the voltages on my PC.
But, when i execute the 'sensors' command, it produces an incorrect result.
| Quote: | # sensors
w83697hf-isa-0290
Adapter: ISA adapter
VCore: +1.54 V (min = +1.71 V, max = +1.89 V) ALARM
+3.3V: +3.23 V (min = +3.14 V, max = +3.47 V)
+5V: +4.92 V (min = +4.76 V, max = +5.24 V)
+12V: +10.64 V (min = +10.82 V, max = +13.19 V) ALARM
-12V: -0.27 V (min = -13.18 V, max = -10.80 V) ALARM
-5V: +1.33 V (min = -5.25 V, max = -4.75 V) ALARM
V5SB: +5.40 V (min = +4.76 V, max = +5.24 V) ALARM
VBat: +0.27 V (min = +2.40 V, max = +3.60 V) ALARM
fan1: 2678 RPM (min = 2518 RPM, div = 8 )
fan2: 0 RPM (min = -1 RPM, div = 8 ) ALARM
temp1: +45 C (high = +2 C, hyst = +80 C) sensor = thermistor
temp2: +57.0 C (high = +80 C, hyst = +75 C) sensor = diode
alarms:
beep_enable:
Sound alarm enabled
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I think that it is an incorrect result because is impossible that the PC runs with -0.27 volts at the -12volts terminal
Another question: What is the VBat field? Is it the battery voltage?
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NeddySeagoon
Administrator
Joined: 05 Jul 2003
Posts: 54827
Location: 56N 3W
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| Posted: Sat Jun 17, 2006 12:01 pm Post subject: |
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brujo66,
Welcome to the wonderful world of hardware.
Your w83697hf sensor chip provides inputs for measuring a given number of voltages, speeds and temperatures.
Many manufactuers use it in different way, so the labels provided by sensors.conf are often wrong in any particular case.
Your PC would work quite well without the -12v and -5v supplies. One of them is used for the serial ports, the other is unused. However, they are part of the power standard for PCI slots, so must be provided.
As you say, VBat is intended to be the CMOS battery voltage. It looks like that the -12v and Vbatt inputs are not connected to your sensor chip.
the -5v may be but the scale factor applied in sensors.conf is incorrect for you. You may find some useful comments in sensors.conf. Compare the outputs provided by lm_sensors to those provided by the BIOS. They both use the same sensor chip.
_________________
Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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