API's line of Master Reference Oscillators (MROs) is state-of-the-art designs utilizing vibration hardened, ultra low noise, crystal oscillators intended for severe environments such as heavy ground or vibration prone airborne applications.
These Master Reference Oscillators (MROs) utilize a unique dampening structure, suspending the oscillator in mid-air isolating it from the detrimental effects of microphonics on phase noise performance.
| Frequency | 60 – 480 MHz |
| Output power level | +20 dBm |
| Aging | +/-1PPM per year after 30 days operation |
| Harmonics | -40 dBc |
| Spurious | -90 dBc max in a +/-2 MHz B.W. about 160 MHz -75 dBc from +/-2 MHz to +/-20 MHz about 160 MHz |
| Temperature stability | +/- 0.5 PPM , -20 to +60° C, REF +25° C |
| Dimensions | 6.75" x 5" x 2.688" |
| Connector RF | SMA female |
| Connector E-tune | SMA Female |
| DC and Bits | Male 9 pin D connector |
| Packaging | Machined aluminum housing Nickel plated per MIL-C-26074 |
| DC power | 15 V |
| DC current | 1.5 A during warm up 0.5 A after warm up |
| VSWR | 1.5:1 max @160 MHz into a 50 ohm system |
| Offset Freq Hz | Static Noise dBc/Hz | Dynamic Noise dBc/Hz |
|---|---|---|
| 10 | -100 | -84 |
| 100 | -131 | -116 |
| 1000 | -158 | -152 |
| 10K | -173 | -172 |
| 20K | -176 | -176 |
| 1Meg | -176 | -176 |
| Offset Freq Hz | Static Noise dBc/Hz | Dynamic Noise dBc/Hz |
|---|---|---|
| 10 | -95 | -78 |
| 100 | -125 | -110 |
| 1000 | -152 | -146 |
| 10K | -167 | -166 |
| 20K | -170 | -170 |
| 1Meg | -170 | -170 |
| Offset Freq Hz | Static Noise dBc/Hz | Dynamic Noise dBc/Hz |
|---|---|---|
| 10 | -89 | -72 |
| 100 | -119 | -104 |
| 1000 | -146 | -140 |
| 10K | -161 | -160 |
| 20K | -164 | -164 |
| 1Meg | -164 | -164 |
