Barco ICP RTC battery

[Bob Ezra]

More battery questions:

What happens if the Barco ICP RTC battery dies?

As for changing it.- Barco sells a kit for $133. that has 20 pieces, some batteries and protective caps for the cert battery.
Is the cap necessary if one is careful?

Once the battery is swapped the instructions to reset clock involve Communicator ( which I have on a laptop) .This from the instructions:

"Clear the projector error 5800 "ti-icp - system status = fail" with error message "ICP real time clock error" by configuring the RTC
(Real Time Clock) of the ICP. See user manual Communicator chapter "Set up of the ICP clock", choose the option UTC/GMT
time calculated from current PC time as current time"

Does this mean that the projector RTC gets its time from the laptop?

all input on this topic is much appreciated

So many batteries, so little time...

Thank you

[Carsten Kurz]

For original (Texas Instruments OEM) ICPs, a dead RTC battery is no big issue. Swap the battery, restart the projector, solve the clock/tamper errors, and you're okay. For Barcos' own ICP-D, the single backup battery also keeps the ICP certs. If that battery dies, you're up for a very expensive service job - you need to send the ICP-D to Barco for them to recert it.

[Leo Enticknap]

As for changing it.- Barco sells a kit for $133.

Or you could buy a BR2330 for $9 (old school ICP), or a CR2477 for $4.46 (ICP-D). As Carsten points out, the old school ICP has two separate batteries for the certificate and the clock. The former is soldered in and not field replaceable (when it dies, you need a new ICP), but the latter can be left until it dies, as long as you have a replacement ready to go. In the ICP-D, both the cert and the clock are maintained by the same battery, meaning that you must replace it before it discharges.

Does this mean that the projector RTC gets its time from the laptop?

The projector (and ICP clock) gets its time either from being manually entered, which includes an option in Communicator for a one-click sync to whatever the BIOS time is on the computer running Communicator), or by syncing to a NTP server that you specify; typically the theater's TMS.

[Bob Ezra]

Leo

The thing about the kit is it has covers for the cert battery. Are they necessary if one is careful? rtc battery.pdf

[Bob Ezra]

[Carsten Kurz]

Well, of course, in theory it is possible to short the nearby cert battery while swapping the RTC battery. However, as you slide out the RTC battery towards the other side, away from the cert battery, the risk is low. Also, the BR2330 has a low profile and slides out and into the battery holder pretty easily.
Other than the chunky CR2477(N) on ICMPs, ICP-Ds or the ill-fated CAT745.

[Carsten Kurz]

I remember that once I actually used a CR2032 for an ICP RTC battery, as I couldn't get hand on a 2330 in time. The diameter is just a bit smaller, but the height/thickness is compatible. Fit's the socket nicely. Capacity is more or less the same. As the ICP RTC battery is not actually critical, that's a possible workaround, as a CR2032 can be bought everywhere.