Agilent Technologies HP 8642A/B Specifiche Scaricare il pdf (Pagina 58)

100

101

Table 1-1. HP 3048A System Specifications (2 of 4)

System Phase Noise and Spurious Responses

(Does not include phase noise and spurious signals

from a reference source.)

-60

-80

-100

-120

-140

-160

-180

0.01

0 1

1 10 100 1k 10k 100k 1M 10M 40M

Offset Frsquency (Hzl

System Noise and Spurious Response Increase

with Input Level Decrease

*2B

□

B / «S +IB *15 +2B *2S

High Frequency Input R Input Signal Level (dBm)

Amp!

Itude Range

To determine system noise and spurious response levels, find

the dB degradation at the signal input level from the lower

graph and add to the curves of the upper graph. For example,

if a +15 dBm signal is applied to the Low Frequency L Input

and a +5 dBm signal to the R Input, the degradation is

+10 dB. Therefore, the specified maximum spurious signal

level increases from -112 to -102 dBc at all offset frequencies

and the system's maximum noise level at >10kHz offset

frequencies increases from -170 to -160 dBc/Hz.

1 1

L Input signal:&+L5 dBM Lou Frequency Input

£+7 dSM Loin Frequency Input

rev.05SEP89 General Information 1-13

1 2 ... 53 54 55 56 57 58 59 60 61 62 63 ... 452 453

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Agilent Technologies HP 8642A/B Specifiche Pagina 58

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