Canon - EOS 5D - Video
LINDOS AUDIO SEQUENCE TEST Canon - EOS 5D - Video
SOURCE MS20 V1.3 Test with VA-5D2 (record level - one click)
17-May-11 10:49 AM


FREQUENCY RESPONSE @0dB [u]
20Hz -9.87 -10.12
31Hz -4.87 -5.12
40Hz -2.75 -3.00
50Hz -1.37 -1.62
100Hz +0.75 +0.62
315Hz +0.37 +0.37
1k0 0.00 0.00
6k3 0.00 0.00
10k0 +0.12 +0.12
12k5 +0.12 +0.12
14k0 -0.12 0.00
16k0 -0.25 -0.25
20k0 -6.62 -6.62
25k0 -22.00 -22.00
Level RMS equiv fast Q-pk [1]
1001.0 -56.92 -58.68
1001.0 -1.43 -1.43
1001.0 -1.44 -1.43
1001.0 -1.43 -1.42
1001.0 +2.81 -1.44
1001.0 +2.82 -1.41
1001.0 +2.82 -1.43
1001.0 +2.81 -1.44
LEVEL VS LEVEL [h]
TEST LEVEL OUT 1kHz [t]
TL dB 02.85 02.85
DELms
NOISE ITU-468 Q-Pk REL [n]
WTD -52.85 -52.48
DIST RES 1kHz WTD REL [r]/q
-20dB -32.23 -32.19
0dB -52.18 -52.07
+8dB -59.52 -59.93
+12dB -62.73 -63.02
+15dB -63.75 -63.89
+18dB -40.07 -40.00
PHASE DIFFERENCE R-L [z]
3k15 26.00
10k0 86.00
15k0 112.00


Test made by recording sequence onto the EOS 5DmkII and then playing back from a PC using a Yellow TEC PUC and Quicktime. Phase error has now been confirmed. Level results are to test the input impedance of the camera using the VA-5D2 and an adapter with 4k7s on both channels. Part way through the test the resistor on the left channel was shorted out. If the camera's input impedance is 4k7 then we would see a 6dB level increase. Actual increase was 4.2dB. Therefore true impedance is:

0.65 = R2 / (4k7 + R2)
R2 = (0.65 x 4k7) / 0.35
R2 = 8k7

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