[Features]
● 10MHz 5 output
・Front right BNC connector：10MHz Sine wave (or Square wave)
・Front left BNC connector：10MHz Sine wave (or Square wave or 1pps)
・3 outputs on rear panel：10MHz Sine waves (50 ohms x 3)
*We can modify the waveform set on front panel and
impedances on rear panel before the shipment.
● Morion MV89A Double oven OCXO
inside
● 12-digit frequency display (can
also display satellite reception status, UTC, etc.)
● True holdover function
● Ultra high accuracy, high
stability
● Very high sensitivity
● High speed satellite capturing
● The NMEA-RS232 signal is available
as standard, allowing the user to monitor the distribution of satellites over
the entire sky and the level of each signal
● Technical information document
included
● Rapid shipment from Tokyo, Japan
[Customer Testimonies]
★ N. M.: (QZM/MV89A/5-output
configuration)
Used as the master clock for the DAC. Without the
clock, there was a spatial scattering and bleeding of sound. With the clock,
both were organized, the focus improved, and the spatial placement of
instruments in front, back, left, right, above, and below improved, resulting
in a natural sound.
★ O. A.: (QZM/MV89A)
Used
with Esoteric K-03's word clock. It's compact and easy to handle, with a quick
startup. The stability is sufficient, and I thought it was of high quality. I previously
used Trimble receivers and DATUM rubidium, but the startup was slow, making it
impractical. This time, I felt an overall improvement. Particularly, the
silence and depth are excellent, and the clarity of low-volume parts was
noticeable in many CDs.
★ T. R. (QZM/MV89A/4 output
configuration)
I would like to report on the sound from GPSDO → MC-3+ → SX-11. In this setup, I can switch
between using the internal clock of MC-3+ and an external clock from GPSDO.
Additionally, since the SX-11 is a CD player, I can compare the sound from Node
2i (source is Tidal) with the sound of my CD collection.
First, regarding the sound from Node 2i, when using
GPSDO as an external clock, there is a noticeable difference in sound compared
to using the internal clock of MC-3+. The resolution and imaging have clearly
improved, and the soundstage is more clear. I felt that this change was well
worth the investment.
So, I set SACDs and regular CDs in the SX-11 and
compared the sound with that from Node 2i. If I were to express my impressions
using inequalities, it felt like SACD > Node 2i (Tidal MQA) >> SACD CD
layer, Node 2i (Tidal CD quality) = CD. SACD sounded the best to me, but in
terms of resolution, it didn't differ much from Node 2i (Tidal MQA). The
difference seemed to be in the unique soundstage and atmosphere that SACD is
known for. Some people may prefer the clean soundstage of Node 2i (Tidal MQA).
In any case, it's certain that the sound of Node 2i
has been significantly improved by GPSDO. Personally, I still think SACD is
worth buying, but I'm beginning to think that there's no need to buy regular
CDs. Streaming is more convenient and saves the hassle of changing CDs. I
introduced GPSDO as an experiment, and while I haven't tried other GPS devices,
I feel that it was a worthwhile purchase to the extent that I don't feel like
upgrading to GPS devices in the several hundred thousand yen class.
[High-precision, high-stability, high-purity master
clock for audio A/D device]
Use of the ultra precision, high stability and high
purity of the Morion MV89A Double Oven Xtal Controlled Oscillator eliminates
the sense of harshness in the high frequency range (orchestra), and many users
have testified to the clarity of the sound.
[True holdover function]
A true holdover function is also provided, which is
a proof of high performance GPSDO. Even if the
satellite signal is interrupted by torrential rain or snowfall attenuation, or
if the satellite signal is removed, the 10MHz output frequency keeps high
accuracy without the slightest fluctuation. Of course, when the satellite
signal is recovered, it immediately returns to GPSDO mode. There is no frequency fluctuation at all during the transition to
and from holdover mode.
On some conventional GPSDOs when the satellite lock
is lost, they have been unable to function as a frequency reference device
because the output frequency jumps or breaks but this unit continues to output
the exact 10MHz reference frequency with its automatic holdover function even
when the satellite signal is lost.
[12-digit frequency display]
High-precision display of the current output
frequency to the nearest 100μHz.
It is nice to see 10 to 11 zeros in a row, 10 000 000
000.0.
The LCD panel also displays other information such
as satellite reception status, UTC, and satellite lock information.
[10MHz 5 output]
・Front right BNC connector： 10MHz Sine wave: +13.5dBm±2dB (3.0Vp-p into 50Ω
load)
It can be changed to Square wave (TTL)
・Front left BNC connector： 10MHz: +11.5dBm±2dB (2.4Vp-p into 50Ω load)
It can be changed to Square wave or 1pps (3.3V TTL)
・3 outputs on rear panel：10MHz Sine waves (50 ohms x 3)
The waveform set on front panel and impedances on rear panel can be
modified at our factory before the shipment..
Please
specify when you order if you need the modification.
[Very high sensitivity].
We have heard from several Trimble ThunderBolt
owners and users of other GPSDO that this unit has the highest sensitivity
(more satellites captured than others).
If the installation environment of the antennas is
the same, it means "higher sensitivity = stronger satellite lock = better
ability to maintain frequency accuracy".
[Fast satellite capturing]
This unit takes only a few minutes to capture
satellites. This is unmatched in speed.
Just a few minutes after power-on, the LCD display
will indicate that the unit has captured the satellite.
In addition, this unit outputs all signals shortly
after power-on.
[NMEA signal output]
This unit has an NMEA signal output and
works as a GPS/NMEA signal receiver.
Some free software can be used to monitor
the NMEA signals. (The NMEA capability is Talk only, does not accept Commands.)
By connecting this GPSDO to a Windows PC
via RS232 cable, you may monitor the distribution of satellites over the entire
sky, each signal level, signal-to-noise ratio, high precision position
information, etc.
If your PC does not have an RS232 port, you
can also connect via USB port. In that case, use the "RS232-USB converter
cable".
The instructions for connecting to a PC and
setting up the recommended NMEA software are given in the instruction manual.
*We check the NMEA output capability before
the shipment by our Windows 10 PC and attach the data as a performance data of
the product.
We can assure that this unit outputs NMEA
data but since the operation of software is dependent on the computer used, it
does not necessarily mean that we can guarantee that it works on all computers.
[Strict Product Inspection]
This product is delivered to you after rigorous inspection
and verification.
The inspection includes NMEA signal analysis to
check the distribution of satellites over the entire sky, each signal level,
S/N ratio, and so on.
This also confirms the performance of the receiver
circuit and the antenna's directivity pattern over the entire sky.
The test data will be included in the delivery.
[Specification]
・10MHz output on right BNC: Sine
wave: +13.5dBm±2dB (3.0Vp-p into 50Ω load / Fixed 50Ω)
It can be
changed to Square wave: TTL (>2.5Vp-p into 50Ω
load)
・10MHz output on left BNC: Sine wave: +11.5dBm±2dB
(2.4Vp-p into 50Ω load) or 1pps TTL output
It can be changed to Square wave (default): 3.3V TTL (>2.5Vp-p into 50Ω load)
・Output 2, output 3 and output 4 on
rear panel: 10MHz Sine wave, 1.4Vp-p on 50Ω load
They can be modified to 10MHz Sine wave, 1.4Vp-p on
75Ω load.
*The waveform set on front panel and impedances on rear
panel can be modified at our factory.
Please
specify if you need the modification before the shipment.
・RS232 output: GPS NMEA signal (pin
2, 9600bps)
・1PPS output (pin 9): square wave
・GPS antenna supply voltage: DC 3.3
to 5 V
・Power supply: 100V to 240V, 47 to
63Hz (Required power is 12V 2A)
UL, FCC,
BSMI, PSE, RoHS
・DC jack: Inside diameter: 2.1mm,
External diameter: 5.5mm
・Dimensions (W x H x D): 108 x 60 x
125mm (excluding protrusions)
・Weight: Approx. 700g ( The power
adapter is about 150g separately)
*This GPSDO is brand new and unused, but only the
OCXO is a proven used product.
[Standard accessories]
・English instruction manual
・GPS antenna (cable length: approx.
3m)
・12V power adapter (100V to 240V,
47 to 63Hz)
・Technical information documents (Individual
satellite signal strength graphs/celestial distribution maps, and other useful
technical information)
* Shape of AC adapter plug is like the one in the
posted picture.
You may need to use an adapter to fit to your wall
outlet.
[Shipment]
-We deliver our products by EMS (Express Mail
Service) to countries where EMS is available and by ePacket to countries where
ePacket is available even if EMS is not available.
-As of Jun. 10, 2024, EMS service is available to following countries:
USA, Canada, Mexico, Some Central American
countries, Argentina, Brazil, Some South American countries, Most of Asian countries, South-Africa
Some African countries, New Zealand and Australia
If you are unsure, please inquire about the
availability of delivery to your area before placing your order.
You may need to pay duty/tax associated with the
importation of this product.
We will let you know the EMS tracking number so that
you can track and know when you can receive the package.
The expected delivery period to your location in USA
is about 1 week, and most of rest of countries 10 to 14 days but it may vary
by your location. Presently,
[Returns]
In case of DOA (Defect On Arrival):
Please contact us as soon as possible when you find
the product has defect on arrival.
We will reship the replacement unit or refund the
money as you like.
In case you send back the failed unit, we ask
customer to once pay the EMS fee.
We will refund the money together with the return
EMS fee when we receive all the original items we shipped.
If item is not as described and you want to cancel
and return:
Please contact us within 7 days from receipt of the
package.
With our consent, you can send it back to us and we
will refund the amount of money we received from eBay after we receive all the
original items we shipped.
In this case, you need to pay the return EMS fee.
If you have any questions, please feel free to ask us.
Thank you.