T710 GNSS Rubidium Atomic Frequency Standard

T710 Portable High-Precision Frequency Reference

The T710 GNSS Rubidium Atomic Frequency Standard integrates a GNSS receiver, a Rubidium atomic clock, and a low-phase-noise crystal oscillator. Using digital phase-locking technology, it outputs a high-precision 10MHz frequency signal with frequency stability comparable to that of a standard cesium clock. It supports 1PPS and UTC synchronization, features smooth frequency division and anti-interference capabilities, and automatically switches to the Rubidium clock if GNSS lock is lost. Supporting multiple signal outputs, including 10MHz, 1PPS, and Time of Departure (TOD), it is suitable for high-reliability applications such as radar, communications, power generation, and metrology calibration.

T710 Portable High-Precision Frequency Reference

Important Features

Daily average accuracy <5E-13
1s\10s\100s\ Stability 3E-12
Support 8-channel 10MHz sinusoidal low-noise isolated amplifier output
Supports 6-channel 10MHz square wave output and can concurrently receive GPS/QZSS, GLONASS, BeiDou, and GALILEO
Support external 1PPS input
Nanosecond time accuracy relative to UTC

Important Features

Parameter	Index
Output channels	8-channel, BNC, sine wave, amplitude 12±1dBm, 50Ω
Output frequency	10MHz
Clock accuracy	≤1E-12, 48 hours after power on, GNSS locked state
Short-term stability	< 3E-12/1s; < 3E-12/10s; < 3E-13/100s; < 1E-12/day (GNSS locked)
10MHz sine wave	≤ -95dBc/Hz @1Hz; ≤ -130dBc/Hz @10Hz
Phase noise	≤ -145dBc/Hz @100Hz; ≤ -155dBc/Hz @1kHz; ≤ -158dBc/Hz @10kHz
distortion	Harmonics: ≤ -45dBc; Non-harmonics: ≤ -80dBc
10MHz square wave	6-ch, BNC, square wave TTL, 50Ω
5MHz sine wave	2 channels, same specifications as 10MHz (option)
1MHz sine wave	2 channels, same specifications as 10MHz (option)
1PPS output	4-way, BNC, TTL level, 50Ω
Synchronization accuracy	Better than 20ns
Pulse width	100ms
rising edge	<5ns
jitter	<1ns
1PPS input	1 channel, TTL level
Number of channels	72-channel
channel	GPS/QZSS L1 C/A, GLONASS L10F, BeiDou B1, SBAS L1 C/A MSAS, GAGAN, Galileo E1B/C
Data update rate	Concurrent GNSS up to 4Hz
Sensitivity	Tracking and navigation -166dBm
size	2U half-width chassis 213×92×332mm
power supply	220V±20% 47Hz ~ 63Hz
Working temperature	-10℃ ~ +55℃ (host); -40℃ ~ +75℃ (antenna)
Storage temperature	-45°C ~ +85°C
humidity	95% non-condensing
Power consumption	50W
Weight	2Kg

Typical phase noise

Frequency stability typical value

Product Model List

Specifications		T710	T760	T640	T770	TRA85	TRS75	TCA55	TRM60	CX5228	CX910
External Synchronization Input	GNSS	✓	✓	✓	✓	—	—	—	—	—	—
	1PPS	✓	—	—	✓	✓	✓	✓	✓	—	—
	10MHz	—	—	—	✓	—	—	—	—	—	—
Frequency Output	10 MHz sine wave	8-channel	4-channel	4-channel	Route 5	1-way	1-way	—	—	1-way	4-channel
	10 MHz square wave	Route 6	—	—	—	—	—	1-way	1-way	—	—
	Optional	1/5 MHz	100MHz	100MHz	5/100 MHz	—	—	—	—	—	—
		—	NTP	IRIG-B	—	—	—	—	—	—	—
Stability	1s	<3E-12	<5E-12	<3E-12	≤4E-13	≤ 3×10⁻¹²	≤ 6×10⁻¹²	≤ 8×10⁻¹¹	≤ 3×10⁻¹¹	≤ 1.5×10⁻¹³	≤ 1.1×10⁻¹³
	10s	<3E-12	<5E-12	<3E-12	≤3E-13	≤ 1.5×10⁻¹²	≤ 2×10⁻¹²	≤ 2.5×10⁻¹¹	≤ 1×10⁻¹¹	≤2×10-¹³	≤2×10-¹³
	100s	<3E-13	<5E-13	<5E-12	≤7E-14	≤ 5×10⁻¹³	≤ 6×10⁻¹³	≤ 8×10⁻¹²	≤ 3×10⁻¹²	≤4×10⁻¹³	≤5×10-¹³
	Day (GNSS Lock)	<1E-12	<1E-12	<1E-12	≤3E-14	—	—	—	—	—	—
Phase noise	1Hz	≤-95dBc/Hz	≤-95dBc/Hz	≤ -100 dBc/Hz	≤-120dBc/Hz	≤ -95 dBc/Hz	≤ -85 dBc/Hz	≤ -50 dBc/Hz	≤ -85 dBc/Hz	≤ -123	-126*
	10Hz	≤-130dBc/Hz	≤-130dBc/Hz	≤-130dBc/Hz	≤-140dBc/Hz	≤ -130 dBc/Hz	≤ -120 dBc/Hz	≤ -80 dBc/Hz	≤ -120 dBc/Hz	≤ -145	≤ -148
	100Hz	≤-145dBc/Hz	≤-145dBc/Hz	≤-145dBc/Hz	≤-155dBc/Hz	≤ -150dBc/Hz	≤ -145dBc/Hz	≤ -115 dBc/Hz	≤ -140dBc/Hz	≤ -155	≤ -155
	1kHz	≤-155dBc/Hz	≤-155dBc/Hz	≤-160dBc/Hz	≤-160dBc/Hz	≤ -160dBc/Hz	≤ -150dBc/Hz	≤ -130 dBc/Hz	≤ -140dBc/Hz	≤ -160	≤ -160
	10kHz	≤-158dBc/Hz	≤-158dBc/Hz	≤-160dBc/Hz	≤-160dBc/Hz	≤ -160dBc/Hz	≤ -155dBc/Hz	≤ -140dBc/Hz	≤ -145dBc/Hz	≤ -165	≤ -163
distortion	Harmonic	≤-45dBc	≤-45dBc	≤-45dBc	—	≤ -30dBc	≤ -30dBc	—	≤ -80dBc	≤ -40dBc	≤ -40dBc
	Non-harmonic	≤-80dBc	≤-80dBc	≤-80dBc	—	≤ -80dBc	≤ -70dBc	—	—	≤ -80dBc	≤ -80dBc
Pulse output	Number of way	4	4	4	4	1	1	1	1	—	—
	Synchronization accuracy	20ns	20ns	20ns	10ns	—	—	—	—	—	—
Frequency drift rate	/day	—	—	—	—	±5×10⁻¹³	±1×10⁻¹²	≤3×10-¹¹¹	±3×10⁻¹²	≤3×10-¹⁰	≤1×10-¹⁰
Physical and Electrical Characteristics	Working temperature	-10℃~+55℃	-10℃~+55℃	-10℃~+55℃	-10℃~+55℃	-40℃~+65℃	-40℃~+65℃	-40℃~+85℃	-40℃~+75℃	-20℃~+70℃	0℃~+40℃
	Cunjian Temperature	-45℃~+85℃	-45℃~+85℃	-45°C to +75°C	-55°C to +85°C	-40℃~+85℃	-40℃~+85℃	-55℃~+125℃	-55℃~+100℃	-40℃~+85℃	-55℃~+125℃
	power supply	220V±20%	220V±20%	220V±20%	220V±20%	+12V to +15V or +24V	+12V–+15V, ±41 TP3T	+3.3V±5%	+5V±4%	+12VDC	+14 to +125°C
	Rate of work	50W	60W	60W	70W warm-up, steady-state ≤ 30W	Warm-up ≤ 45 W, steady-state ≤ 15 W	Start-up power ≤ 28.5 W, steady-state power ≤ 14.5 W	Warm-up ≤ 10 W, steady-state ≤ 1.8 W	Warm-up ≤ 15 W, steady-state ≤ 8 W	≤7.2 W	≤27 W
	External Dimension	2U half-width	2U	2U	2U	116mm×79mm×38mm	68mm×68mm×18mm	41mm×36mm×17mm	51mm×51mm×18mm	50mm×50mm×19mm	5 inches × 3 inches × 3 inches
	Weight	2Kg	5 kg	3.5 kg	5 kg	≤500g	≤300 g	≤50 g	<100g	—	—
Well-behaved and punctual	After 24h of synchronization	200 ns	200 ns	10 us	30 ns (20 days after synchronization)	≤1 µs after 24 hours of synchronization	≤1 us	—	≤1 us	—	—

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