Difference: PowerMeasurements800conv (2 vs. 3)

Revision 301 Mar 2006 - Main.ShibaniBhattacharya

 
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Power Measurements for 800conv

Low Power

Low power measurements: As of 6/10/05 The low power measurements were done with 1GHz oscilloscope via 2m RG241 cable. The high power measurements were done with power meter via approx. 40dB attn. The data in the tables is corrected for attenuation.

Nucleus SGU1 output SGU2 output SGU3 output SGU4 output Router 2 output Amplifier input
13C 1.0V         1.09V
1H   860mV       960mV
15N     960mV   1.23V 1.45V
2H       960mV 1.01V 980mV

High Power

Added:
>
>		High power measurements: As of 2/28/06

After replacing BLAX300 Amplifier

Measurement description BLAX3 (2H), W
amplifier output @ -6dB no attenuation 387/425.7W
amplifier output @ -6dB with attenuation 8dB, 96.6/106.3W
probe input @ -6dB with attenuation 23/26.1 W

170us 90 @ -5 dB

 High power measurements: As of 6/10/05

Measurement description BLAX1 (13C), W BLAH (1H), W BLAX2 (15N), W BLAX3 (2H), W
amplifier output @ -6dB no attenuation 560 103 422 397W
amplifier output @ -6dB with attenuation 8dB, 260 14dB, 17/18.7 3dB, 365/394 8dB, 100
probe input @ -6dB with attenuation 127/146 8.4 205/220 20/21
amplifier output with attn from -6dB to +6dB       72 35.6 18.1 9 4.6

Output of all amplifiers was fairly linear in the -6dB to +6 dB range

Linearity Check

CARBON

-6db 10.4
-5.5 10.7
0 21.6
6 43.7

NITROGEN

-6 48.75 TUNED but NOT MATCHED Pw is very long!!!

Calibrated with a standard sample:

-6db 48.5
-3 77.0
0 112.5
6 226.0

Deuterium

-6 149us
2.13 380us

Previous Measurements

1H db @Amplifier 2 @probe (W)
-6 86 45
-6 - 20 after 10db was added for cryoprobe
13C db @Amplifier 1 @probe
-6 480 280
db @Amplifier 5 @probe
-6 255 -
db @Amplifier 6 @probe
-6 165 -
15N db @Amplifier 5 @probe
-6 420 250
db @Amplifier 1 @probe
-6 590 -

Date Action taken comments

13C db @Amplifier 1 @probe
-6 - 300.3
-3 - 150.0
0 - 71.2
6 - 17.8

Date Action taken comments
4/28/05 Pulse Calibration was done with CORRECT cortab file PRETTY LINEAR!!!!

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