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2087AS Series L-Band Fixed Downconverter |
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| The 2087AS Series Fixed Downconverter converts an L-band signal to IF with no spectrum inversion, low group delay, and flat frequency response. The L-band RF input is filtered and then mixed with a synthesized local oscillator (LO) signal to IF. The LO frequency is fixed. A green LED lights when DC power is applied and a red LED lights for PLL alarm. Connectors are Type F for the RF input and BNC female for IF output. The 2087S has a bandwidth determining SAW IF filter. The 2087A has AGC for a -25 to -65 dBm input range.The 2087AS has both AGC and SAW filter. The 2087 is powered by a 120 VAC, 60Hz, wall power supply. and is housed in an 4.7” wide X 1.75” high X 12.5” deep aluminum chassis. Option -R provides 1 3/4” X 19 “ rack mount panel. Option -C has no power supply for use with a Series 2000 Power Supply. | ||
2087 Series Downconverter Chassis
Equipment Specifications*
| Input Characteristics | |
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Impedance/RL Frequency (specify) Level Range Input 1dB |
75 ohms/10dB 0.95 to 2.0 GHz -10 to -20 dBm 0 dBm (-15 @ min gain Opt -A) |
| Output Characteristics | |
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Impedance/RL IF Frequency |
75 ohms/18dB 70, 140 MHz, standard |
| Channel Characteristics | |
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Gain Image Rejection Spurious Response Frequency Response Group Delay, max |
0 ± 1.0dB > 40 dB < -45 dBC ±0.5dB, ±15MHz or determined by SAW IF filter ± 5ns, ±10MHz; ±15ns, ±15MHz or determined by SAW IF filter |
| Synthesizer Characteristics | |
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Frequency Accuracy Phase Noise (dBC/Hz) |
±25 kHz max over
temp <= -80, 10 kHz; <= -90, 100 kHz; <=-100, 1 MHz |
| Controls/Indicators | |
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MGC/AGC;
MGC Pot PLL Alarm DC Power |
Manual(MGC) or
Auto(AGC) Gain; Pot controls gain in MGC mode Red LED Green LED |
| Other | |
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RF
Connectors IF Connectors Size, Bench Top Size, Rack Mount (-R) Power |
type F, female BNC, female 4.7" wide X 1.75" high X 12.5" deep 19 inch standard chassis, 1.75" high X 13.0" deep (optional) 120 ± 10% VAC, 60 Hz, 20W max, wall power supply |
| Models | |
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2087-1350 2087R-1350 2087C-1350 2087S-1350-36 2087A-1350 |
1.35 GHz in, 70
MHz out, wall power supply 1.35 GHz in, 70 MHz out, wall power supply, rack mount 1.35 GHz in, 70 MHz out, no power supply, use with 2000-01 power supply 1.35 GHz in, 70 MHz out, 36MHz SAW IF Filter, wall power supply 1.35 GHz in, 70 MHz out, AGC for -25 to -65 dBm input, wall power supply |
*+10 to +40 degrees C; Specifications subject to change without notice