From: "Ralph Metzler" <[EMAIL PROTECTED]> > I also cannot say for 100% that the power supply explanation is > correct. That's only what I heard indirectly. Maybe there really is > more to it.
There is definitely something to this - I just bothered to take a real look at the CIS from my yellow ZetaCAM, and the power information says: 0x55 <- Nom V : EXP=5 (1V), MNT=10 (x5) -> 5V 0x4D <- Min V : EXP=5 (1V), MNT=9 (x4.5) -> 4.5V 0x5D <- Max V : EXP=5 (1V), MNT=11 (x5.5) -> 5.5V 0x56 <- Avg I : EXP=6 (100mA), MNT=10 (x5) -> 500 mA 0x56 <- Peak I: EXP=6 (100mA), MNT=10 (x5) -> 500 mA I.e. the CAM is working at a nominal voltages of 5V (with a tolerance from 4.5V to 5.5V), and the average (and peak) current is 500mA, a nominal power consumption of 2.5 watts. This is a clear violation of EN50221, A5.5.10, which specifies: | Each module shall neither consume nor dissipate more than 1.5 watts. | Additionally the power supply current to each module (sum of Vcc current | and Vpp current) shall not exceed 300mA long term, and the short-term | peak current is limited to 500mA for no more than 1ms. So Neotion's CAMs are indeed outside the range specified in the CAM standard. Regards, -- Robert Schlabbach e-mail: [EMAIL PROTECTED] Berlin, Germany -- Info: To unsubscribe send a mail to [EMAIL PROTECTED] with "unsubscribe linux-dvb" as subject.
