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2005-20P Agile Satellite Test Downconverter

  

The 2005-20P Test Downconverter converts a 2000 to 2500 MHz signal to 70 MHz in 1 MHz steps with a high side 2070 to 2570MHz LO (C, inverted spectrum) and 70 MHz with low side 1930 to 2430 MHz LO (Ku, non-inverted spectrum). Over a limited frequency range, the 2005-20P also operates with a 140 MHz output.

Featuring low phase noise, these units are used to downconvert “clean” (having only this frequency) 2.0 to 2.5 GHz signals to 70 or 140 MHz for test purposes. The input frequency is selected with four BCD switches which control the synthesized LO. The 2.0 to 2.5 GHz input is mixed with a synthesized local oscillator (LO) signal to the 70 or 140 MHz IF. Front panel LEDs light when DC power is applied (green) and when a PLL alarm occurs (red). The mixer output is applied to the output amplifier providing a nominal gain of +5 dB (high gain) or -15 dB (low gain). Connectors are 50 ohm BNC female for the 70 MHz output and the RF input. DC power for the 2005-20P is provided by an external wall mount power supply (option -P). The 2005-20P can be mounted on an 1 3/4” X 19 “ rack mount panel (option -R).
 
 

 2005-20P Agile Test Downconverter Front


 2005-20P Agile Test Downconverter Block Diagram

Equipment Specifications*
 

Input Characteristics
Impedance/RL
Frequency
Level, max
Input 1dB compression		 50 ohms/10dB
2000 to 2500 MHz
-10 to -30 dBm
-5 dBm
Output Characteristics  
Impedance/RL
Frequency		 50 ohms/15dB
70 or 140 MHz left, ± 20 MHz
Channel Characteristics  
Gain
Spurious Response
Frequency Response		 -15dB ±3dB (low gain); +5dB ±3dB (high gain)
< -40dBC max, -45 typ, 70 ± 20 MHz
±2dB, 2000-2500 MHz; ±0.5dB, any 10 MHz incr.
Synthesizer Characteristics
Frequency Accuracy
Frequency Step
Phase Noise (dBC/Hz)		 ±100kHz max
1.0 MHz min
<= -75, 10kHz; <= -90, 100kHz; <= -105, 1MHz
Controls/Indicators
Frequency Selection
DC Power
Alarm
 		 Direct readout BCD switches
Green LED
Red LED
Other
RF, IF Connectors
Size, Bench Top
Size, Rack Mount (-R)
AC Power (-P)		 BNC, female, 50 ohm
4.7"W X 1.75"H X 6.5"D
19 inch standard chassis, 1.75"H X 7"D (optional)
120 ± 10% VAC, 60Hz, 10W max, wall PS, +15VDC unregulated, 600ma

*+10 to +40 degrees C; Specifications subject to change without notice