SPECIFICATIONS
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Series
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CO-285W: Reduced Size Line
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Frequency
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4 MHz to 500 MHz
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Output
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Standard: 0.5 Vrms/50 (+7 dBm)
Option R: 1 Vrms/50 (+13 dBm)
High level option:
1 watt (+30 dBm) available in 2" x 3" x 0.75" package
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Supply
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+15 Vdc ±5%
(Any supply in 12-24 Vdc range optional; supply less than
+15 Vdc subject to reduced output level)
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Accuracy
(at 25°C)
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Standard: ±10 ppm
*Option T: ±1 ppm
*Tuning adjustment settable to ±1 ppm
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Temperature Stability
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STANDARD:
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0°C
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to
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+70°C:
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±25 ppm
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Option 1:
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-55°C
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to
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+85°C:
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±50 ppm
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Option 2:
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-55°C
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to
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+125°C:
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±50 ppm
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(not available in CO-287W)
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Option 3:
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0°C
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to
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+50°C:
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±3 ppm
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(not available in CO-484, CO-487, CO-287W)
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Option 5:
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0°C
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to
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+50°C:
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±5 ppm
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Option 6:
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0°C
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to
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+50°C:
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±10 ppm
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Aging Rate
(typical after 30 days)
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Standard: 3 ppm first year, <2 ppm/year thereafter
Option Y: 2 ppm first year, <1 ppm/year thereafter
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Phase Noise
(typical 4-100 MHz)
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Offset from Carrier
100 Hz
1 kHz
10 kHz
50 kHz
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Standard
-100 dBc/Hz
-125 dBc/Hz
-140 dBc/Hz
-145 dBc/Hz
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Option L1*
-115 dBc/Hz
-140 dBc/Hz
-150 dBc/Hz
-155 dBc/Hz
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Option L2**
-120 dBc/Hz
-145 dBc/Hz
-160 dBc/Hz
-160 dBc/Hz
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Noise degrades by 6 dB per octave above 100 MHz
*L1 Option is not available in CO-281, CO-484, CO-487
**L2 Option is available only in CO-233FW and is limited to 200 MHz:
above 100 MHz, output of CO-233FWL2 is restricted to +7 dBm.
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