BRD9_v5 and BRD10_v5 were remeasured and tuned yesterday (see elog 235).
I double checked the tuning right before installing the BRDs on the BS. Only BRD10 Roll mode was out of the 1% range (F = 24.05 Hz, too low), so I retuned it.
For reference, the final tuning is:
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BRD9_v5 - Bounce Mode
| Measurement # |
Frequency [Hz] |
Q |
| 57 |
16.656 |
78 |
| 58 |
16.656 |
83 |
| 59 |
16.656 |
80 |
| Mean |
16.656 |
80 |
Tuning is 0.2%
BRD9_v5 - Roll Mode
| Measurement # |
Frequency [Hz] |
Q |
| 60 |
24.469 |
59 |
| 61 |
24.453 |
55 |
| 62 |
24.406 |
- |
| Mean |
24.443 |
57 |
Tuning is 0.4%
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BRD10_v5 - Bounce Mode
| Measurement # |
Frequency [Hz] |
Q |
| 12 |
16.672 |
81 |
| 13 |
16.656 |
69 |
| 14 |
16.688 |
- |
| Mean |
16.672 |
75 |
Tuning is 0.1%
BRD10_v5 - Roll Mode
| Measurement # |
Frequency [Hz] |
Q |
| 21 |
24.281 |
- |
| 22 |
24.297 |
- |
| 23 |
24.250 |
- |
| Mean |
24.276 |
- |
Tuning is 0.3% |