New Style Guide Universal - ELSINCO

Enhance Frequency Accuracy with Built-in GPS
GPS (Option 31)
The GPS option is used to confirm and save the exact measurement, location (longitude, latitude), date and time for each
measurement. This option also comes with a magnet mount antenna with a 5m (15 foot) cable, for convenient use on a car
roof or other surfaces.
GPS location information (longitude, latitude)
is shown at the top of the screen.
The MT8222A can easily enhance the
frequency reference oscillator accuracy to
make precise frequency error measurements.
Drift in PPB
–5
–10
The GPS Option 31 also enhances the frequency accuracy of the MT8222A’s
internal OCXO oscillator. Within three minutes of GPS satellite acquisition,
the built-in GPS receiver provides a frequency accuracy to better than 25 ppb
(parts per billion). After disconnection of the GPS antenna, the instrument
will remain in High-Accuracy mode for three days, preserving frequency
accuracy to better than 50 ppb.
5
0
–15
25 50 25 0 25 50 25 0 25 50 25 0 25
One hour at each individual temperature (x-axis)
Drift in PPB
5
0
Typical frequency accuracy of the MT8222A for 72 hours following the GPS antenna disconnect
over full specified temperature range.
Typical frequency accuracy of the MT8222A for 24 hours following the GPS antenna disconnect
over temperature range 15° C to 35° C.
–5
25 30 35 30 25 20 15 20 25 30 35 30 25 20 15 20 25 30 35 30 25 20 15 20 25
One hour at each individual temperature (x-axis)
23