Hydroflex water housing

[Elliott Balsley]

Last week I used an Alexa Mini inside a Hydroflex underwater housing, and the camera kept powering off about every 10 minutes while testing on dry land. The power LED flashes red and green. There was no EVF connected, so I'm not sure what the error message said. The only thing I can think of was overheating — has anyone else had this problem? The weather wasn't very hot: about 80° F, and we were working in the shade. Once we put the camera underwater, it was fine, and worked for a couple of hours without issue.

[Oliver Temmler]

You can save the log files from the camera to a USB stick and send them to camera service. To check for the error.
However, it sounds quite plausible that the housing will dissipate more heat when it is submerged.

Best
Oliver

[Elliott Balsley]

Where should I send the log file? I attached one of them here, and below is the relevant section. It seems to be caused by the CFast card ejecting itself. Since my last post, we actually had some successful shooting above water, and some failures underwater, so now I'm not sure it's heat-related. This has happened with 2 different CFast cards, and never while shooting without the Hydroflex, so it's unlikely the card is the problem.

Code: Select all

Oct  6 10:51:17 MINI-22582 medserv[1310]: LOG:20130810:5:opening file "/B024R1ZQ/B024C019_161006_R1ZQ.mov" on card with S/N "155304300331" in slot 1.
Oct  6 10:51:17 MINI-22582 medserv[1310]: LOG:20160896:5:Clip started with timecode 10:52:13:02
Oct  6 10:51:24 MINI-22582 kernel: [  152.108625] pciehp 0000:03:02.0:pcie24: Link state changed on Slot(114)
Oct  6 10:51:24 MINI-22582 kernel: [  152.108795] cf 0000:05:00.0: PME# disabled
Oct  6 10:51:24 MINI-22582 kernel: [  152.110054] [cf][cf_remove] Removing CFAST adapter
Oct  6 10:51:24 MINI-22582 medserv[1310]: LOG:202c0810:5:Fatal error (2) when waiting for I/O 0 on medium 1 (6, -1, 0).
Oct  6 10:51:24 MINI-22582 medserv[1310]: LOG:202c0810:5:Error while waiting for I/O's on medium 1 to finish (-2, 6).
Oct  6 10:51:24 MINI-22582 medserv[1310]: LOG:202c0810:5:Fatal error occurred when adding I/O to medium 1 (6).
Oct  6 10:51:24 MINI-22582 medserv[1310]: LOG:202c0810:5:Async write from 0x73c51010 with size 4194304 for medium 1 failed (6).
Oct  6 10:51:24 MINI-22582 medserv[1310]: LOG:20130807:5:Could not write to recording file (-2).
Oct  6 10:51:24 MINI-22582 medserv[1310]: WARNING:80160817:5:Error when adding a frame to the qt container (-2)
Oct  6 10:51:24 MINI-22582 medserv[1310]: LOG:202c0810:5:Fatal error state for medium 1 (5/1)
Oct  6 10:51:24 MINI-22582 medserv[1310]: LOG:20130807:5:Could not complete I/O on recording file (-3, 6).
Oct  6 10:51:24 MINI-22582 medserv[1310]: WARNING:802c0810:5:Fatal error state for async write on medium 1 (5)
Oct  6 10:51:24 MINI-22582 medserv[1310]: LOG:202c0807:5:Could not write to file (29301760, 0x17200000, 0x0006c000, -5).
Oct  6 10:51:24 MINI-22582 kernel: [  152.146719] [fpga][fpga_unlocked_ioctl] LTC IN CMD: ena=1, fps=24, df=0, non_int=1, off=1, ext_sync_tc_enabled=0
Oct  6 10:51:24 MINI-22582 kernel: [  152.146739] [fpga][fpga_ltc_in_ctrl] fpga_ltc_in_ctrl(1, 0x1)
Oct  6 10:51:24 MINI-22582 medserv[1310]: LOG:202c0810:5:Fatal error state for medium 1 (5/1)
Oct  6 10:51:24 MINI-22582 medserv[1310]: LOG:20120808:5:Could not open binary recording table (5).
Oct  6 10:51:24 MINI-22582 medserv[1310]: LOG:20160811:5:Error while storing recording (-2).
Oct  6 10:51:24 MINI-22582 medserv[1310]: LOG:20160811:5:Recording finished with error:  166 video frames (166),  0 audio samples, duration 7199 ms, timecode 10:52:13:02 -> 10:52:19:23,  436.0 MB,  53°C  (-2)
Oct  6 10:51:24 MINI-22582 medserv[1310]: LOG:201607ea:5:Recording ended with error: -2
Oct  6 10:51:24 MINI-22582 medserv[1310]: WARNING:8030009d:5:Write failure on recording card (Slot B).
Oct  6 10:51:24 MINI-22582 kernel: [  152.177425] [fpga][fpga_unlocked_ioctl] LTC IN CMD: ena=1, fps=24, df=0, non_int=1, off=1, ext_sync_tc_enabled=0
Oct  6 10:51:24 MINI-22582 concen[1213]: MESSAGE:6030001d:4:LTC input signal is missing.
Oct  6 10:51:24 MINI-22582 medserv[1310]: ERROR:c02c0810:5:SATA controller not found.
Oct  6 10:51:24 MINI-22582 medserv[1310]: FATAL:e0300005:5:Severe system failure occurred. Reboot camera.
Oct  6 10:51:24 MINI-22582 kernel: [  152.217971] [cf][cf_open] Open aborted - CFAST adapter not present
Oct  6 10:51:24 MINI-22582 monitor[1317]: LOG:201908b8:2:Unlocking ND filter after recording stop.
Oct  6 10:51:24 MINI-22582 super[1209]: WARNING:8018081a:0:System error detected (1 / 0 / 7,  152250).
Oct  6 10:51:34 MINI-22582 kernel: [  162.105469] [cf][cf_port_interrupt] CF fatal error on device cf0 (irq=ffffffff, err=ffffffff, state=3/2)
Oct  6 10:51:34 MINI-22582 kernel: [  162.115139] [cf][cf_port_interrupt] CF fatal error on device cf1 (irq=ffffffff, err=ffffffff, state=0/0)
Oct  6 10:52:02 MINI-22582 monitor[1317]: LOG:2019089e:2:Temp log: System: 71.3; MSA3-MCU: 55.3; MSA3-PeltHot: 37.0; MSA3-SensNom: 40.0; MSA3-SensAct: 40.0; PRS5-MCU: 58.1; PRS5-LTC2991: 55.0;
Oct  6 10:52:02 MINI-22582 monitor[1317]: LOG:2019089e:2:Temp log: PRS5-FPGA: 58.0; PRS5-LTM4644: 68.0; PRS5-LTM4630: 69.0; PRS5-LTM4649: 68.0; CPM2-MCU: 55.3; HOST-CPU: 53.1; SCA3-MCU: 53.8;
Oct  6 10:52:02 MINI-22582 monitor[1317]: LOG:2019089e:2:Temp log: SCA3-SensAct: 40.0; SCA3-PeltNTC: 37.0; NDA3-MCU: 51.9; IOMM-MCU: 56.4; IOMM-PeltCold: 71.3; IOMM-CFastNom: 60.0; VFMB-MCU:  0.0;
Oct  6 10:52:02 MINI-22582 monitor[1317]: LOG:2019089e:2:Temp log: LALB-MCU: 34.8; CFast1:-127;
Oct  6 10:52:02 MINI-22582 monitor[1317]: LOG:2019089e:2:Fan log: MSA3-Fan1Nom: 2350; MSA3-Fan1Act: 2349; MSA3-Fan2Nom: 2350; MSA3-Fan2Act: 2350;

[Mathias Lischke]

Hi Elliott,

Thank you for the log file.
It seems that the camera got rather hot inside the Hydroflex when waiting above water.
Since there is no active cooling in air, the heat produced by the camera can't be dissipated.
I have also sent you a private message with more details.

Best regards,
Mathias