Seagate CF drives

[Russwinters]

Anyone have any experience with these? Common problems, success rate, etc. I just received one, and it doesn't seem to be drawing any power on my oscilloscope, (~3-4ma on the 5v). I can't detect and noise or vibrations coming from the drive; and obviously it does not identify, or initialize. It looks like it may be PCB.


Model: ST650211CF
P/N: 9AF212-235
FW: 3.04
Date: 05341

[mediaman]

no noise at all? first check the power input circuits and protections

[N.C.]

Usually, the protection is before anything.

If fuse is blown, the unit can't get 3-4 mA.

This is only opinion.

Regards,
Janos

[Amarbir[CDR-Labs]]

Anyone have any experience with these? Common problems, success rate, etc. I just received one, and it doesn't seem to be drawing any power on my oscilloscope, (~3-4ma on the 5v). I can't detect and noise or vibrations coming from the drive; and obviously it does not identify, or initialize. It looks like it may be PCB.


Model: ST650211CF
P/N: 9AF212-235
FW: 3.04
Date: 05341

Pardon Me ,
How Are You Passing current Via a Scope ?

[Russwinters]

I have a beta unit of Atola insight; which has a built in oscilloscope

[N.C.]

Anyway, it is done with measuring only one good value resistor, connected serially with the unit.

Janos

[BlackST]

Atola's "oscilloscope" is not an oscilloscope, is a graph of a current monitor readout. For oscilloscope I mean , just to say, a Philips PM3217 or a Tektronix or HP...

[Amarbir[CDR-Labs]]

Anyway, it is done with measuring only one good value resistor, connected serially with the unit.

Janos

Pardon Me ,
I Ask the Same question again How ?

[BlackST]

Let the current flow through a fixed value resistor and then measure the voltage (Ohm's law)

[mediaman]

i think the 3 to 4 mA on the atola is parasitic noise. check the circuit protections (diodes, ferrites, TVS) just to be sure

[N.C.]

Let the current flow through a fixed value resistor and then measure the voltage (Ohm's law)

Amarbir, this is the correct answer.

Good scope can measure from some mV lost in the resistor, so you can use a very little value, or a simple long wire, as Dmitry sad.

Janos

[Amarbir[CDR-Labs]]

Let the current flow through a fixed value resistor and then measure the voltage (Ohm's law)

Amarbir, this is the correct answer.

Good scope can measure from some mV lost in the resistor, so you can use a very little value, or a simple long wire, as Dmitry sad.

Janos

Janos ,
Measure Milli volts But Current ?

[N.C.]

Let the current flow through a fixed value resistor and then measure the voltage (Ohm's law)

Amarbir, this is the correct answer.

Good scope can measure from some mV lost in the resistor, so you can use a very little value, or a simple long wire, as Dmitry sad.

Janos

Janos ,
Measure Milli volts But Current ?

The scope can measure mV, of course.
But you can measure Current with it, if u use one resistor as well. R = U/I ( if i remember right. )

Janos