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2007 Noise Source, 70MHz |
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| Broad band noise goes to precision attenuators controlled by front panel “up” and “down” pushbutton switches via the microprocessor controller. The front panel display shows C/No or attenuation of the noise from a 50 dB- Hz C/No level calibrated for a -20.0 dBm carrier level. Bandpass filters are selected with on board jumpers to band limit the noise at 70 MHz. The 2007 has a front panel red LED that lights if the ambient temperature is outside the +15 to +40 C calibrated temperature range. A yellow LED on the front panel indicates if in remote operation. | ||
2007 Noise Source Front
2007 Noise Source Block Diagram
Equipment Specifications*
| Input Characteristics | |
|
Impedance/RL Frequency Level Gain |
75 ohms/15dB 70 MHz left -20dBm 0dB ±0.1dB |
| Output Characteristics | |
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Impedance/RL Frequency Band Level, w/ 10MHz filter Level, w/ 40MHz filter Monitor Level |
75 ohms/15dB 52 - 88 MHz C/No noise pwr range of 50 - 90 dB-Hz w/ -20dBm carrier C/No noise pwr range of 60 - 90 dB-Hz w/ -20dBm carrier -10dB down from main output |
| Channel Characteristics | |
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Selectable BW Frequency Response Noise Power Accuracy Noise Power Stability |
10MHz or 40MHz @
70MHz ±0.5dB 8MHz, 36MHz ±0.25dB, 15 to 40 deg C; ±0.5dB, 10 to 15, 40 to 50 deg C ±0.5dB, 15 to 40 deg C, 30 days |
| Controls/Indicators | |
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Test
Carrier Term Noise or Carrier Output Level Attenuation Alarm Remote Level |
Toggle switch
turns ref 70MHz carrier on/off Toggle switch terminates noise or external signal Potentiometer for Noise calibration PB switches w/ readout of attenuator or C/No setting Red LED for temp range (w/ FET open drain) Yellow LED lights when remote control is selected 3 digit displays show C/No for a -20dBm carrier or att from max level |
| Other | |
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RF,
IF Connectors Size, Bench Top Size, Rack Mount (-R) Power |
BNC, female 4.7"W X 1.75"H X 12.5"D 19 inch standard chassis, 1.75"H X 13.0"D (optional) 120 ± 10% VAC, 60Hz, 20W max, wall mount power supply (optional) |
*+10 to +40 degrees C; Specifications subject to change without notice