11.8.23 LNO - Sine Wave Outputs with low Phase Noise
The LNO180 is a 10 MHz (5 MHz option) generator card, which provides sine signals with low phase noise
to 4 external outputs. The card has a microprocessor system, which monitors the output signals and generates
status signals for the upper-level management system accordingly.
Function of Operation
The card has a high quality oscillator, which is locked to an external 10 MHz signal. The microprocessor
monitors the lock status of the PLL and the warm up phase of the oscillator. It activates the outputs only after
the phase is locked. This condition is signalized by all LEDs switched from green to red. In the phase locked
state the output levels of the four outputs are monitored and in case of a failure signalized by an associated
red LED.
Technical Specifications:
Interface:
4x sine outputs - 10 MHz or 5 MHz
Output Level:
5 dBm +/- 1 dBm at 50
Ω
(8 dBm or 12 dBm output level option available)
Warm-up time:
< 3 @ 25
◦
C within accuracy of < +-1 x 10
-7
Harmonics:
-60 dBc
Phase Noise:
LNO180 OCXO-SQ
1 Hz
-
80 dBc/Hz
10 Hz
-
100 dBc/Hz
100 Hz
-
130 dBc/Hz
1 kHz
-
140 dBc/Hz
10 kHz
-
150 dBc/Hz
LNO180 OCXO-MQ
1 Hz
-
85 dBc/Hz
10 Hz
-
110 dBc/Hz
100 Hz
-
135 dBc/Hz
1 kHz
-
143 dBc/Hz
10 kHz
-
155 dBc/Hz
LNO180 OCXO-HQ
1 Hz
-
93 dBc/Hz
10 Hz
-
126 dBc/Hz
100 Hz
-
140 dBc/Hz
1 kHz
-
145 dBc/Hz
10 kHz
-
165 dBc/Hz
5 MHz Option:
LNO180/5 OCXO-MQ
1 Hz
-
88 dBc/Hz
10 Hz
-
115 dBc/Hz
100 Hz
-
132 dBc/Hz
1 kHz
-
145 dBc/Hz
10 kHz
-
158 dBc/H
Quartz Filter:
Bandwidth 1 kHz
142
Date: 27th May 2021
IMS - LANTIME M4000
