Rhode and Schwarz
Rubidium Frequency Standard
This is a extremely high quality Rubidium
Oscillator was the standard in our lab for several years. It displayed
excellent characteristics in both short term and long term stability.
It seems very comparable to our new Datum Cesium Standard. It is
This Rhode Schwarz Rubidium Standard
consists of :
XSRM Rubidium Frequency Standard
XSRM Frequency Converter
XSRM Power Supply 237.8013.02
Display of Oscillator Control Voltage
The optimal reading is between 10 and
90. It reads 50.
Display of Rubidium Performance Check
It may be hard to see in the photo but
it is showing the Optimal Reading which is the center of the green scale
below the numbered scale.
The is a display of the output. The
combined uncertainty of our Agilent 53132A counter, 58503B GPS
receiver and the Rhode Schwarz Rubidium Oscillator appears to be around
3x10(-12) short term stability.
This system is mounted in a nice stand
The modules are in a frame which
can be pulled from the case and rack mounted.
Rubidium Oscillator Module:
The Front Panel has 5 MHz output.
The oscillator has a meter to display performance. It displays control
voltage and performance check. It also has a frequency fine tune
adjustment. The meter readings all fall dead center of the recommended
readings. This can be seen in the photos.
The Rear Panel has 5 MHz output that
is used to drive the frequency converter module. It also has a 0-10 Volt
frequency controlled output and an alarm output.
Frequency Converter Module:
The Frequency Converter Module has both
front and rear outputs of 10mhz, 5 mhz, 1 mhz and 100 khz all rated at 1
Power Supply Module:
The Power Supply module has front panel
indicator lights for AC supply, internal battery and external battery.
The rear panel has 4 power outputs, each is 22 to 30 Volts. 2 are used
to power the rebidium oscillator and Frequency Converter. It also has
an input for an external battery.
The internal batteries have been removed.
Two commonly available 12 Volt batteries could be installed. We will
install new batteries, either gel cell or Ni Mh, for the cost of the
batteries to the high bidder if requested.
The Power supply will accept either 115
VAC or 230 VAC at 47 - 440 Hz.