RF Technology Eclipse Series Instruções de Operação descarregar pdf (Página 20)

Page 20 RF Technology R350/R500

7 SPECIFICATIONS 7.4.6 IF Frequencies

7.4.6 IF Frequencies

First IF frequency 45 MHz

Second IF frequency 455 KHz

7.4.7 Sensitivity

-119 dBm Max. for 12 dB SINAD

-116 dBm Max. for 20 dB Quieting

7.4.8 Selectivity

25 KHz spacing - 80dB per RS204C

12 KHz spacing - 70dB per ECR-235

7.4.9 Spurious and Image Rejection

90dB

7.4.10 Inter-modulation

80dB

7.4.11 Modulation Acceptance BW

25 KHz spacing - 7.5 KHz per RS204C

12.5 KHz spacing - 3.75 KHz per RS204C

7.4.12 Noise Squelch

Adjustment Range: 6 - 26dB SINAD, 25KHz versions

6 - 18 dB SINAD, 12.5 KHz versions

Attack Time: 20 mSec. above 20dB Quieting

Release Time: 150 mSec. at 20dB Quieting decreasing to 20ms above 2µV

preset threshold

Hysteresis: Hysteresis is equal to approximately 2dB change in noise

quieting

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RF Technology Eclipse Series Instruções de Operação Página 20