TRW70 Small and WideTemperature Rubidium atomic clock

Small and WideTemperature Rubidium atomic clock TRW70

The TRW70 is a wide-temperature, high-performance rubidium atomic clock, suitable for temperatures ranging from -50°C to +95°C. It features a compact design and high reliability. It offers excellent frequency stability and phase noise performance, built-in 1PPS training and output functions, supports 10MHz square wave output, and supports automatic external signal calibration. Its integrated digital control system features intelligent learning and health monitoring capabilities. Its interfaces are centralized on a single DSUB9 connector, making it easy to install in confined spaces. It is suitable for a variety of high-precision frequency comparison and customized applications.

Small and WideTemperature Rubidium atomic clock TRW70

Important Features

It can work normally within -50℃ ~ + 95℃ range
Small volume76mm×76mm×18mm
The short-term stability is better than 3E-11 / 1s
Room temperature stable power ≤ 13W
Low-phase noise, with typical values -120dBc/Hz@10Hz
1PPS taming and 10MHz calibration

Important Features

Test Item	Condition	Technical Indicators
Output frequency		10 MHz, 1-way sine wave （50Ω, ≥ 7dBm）and a 1-way 3 VTTL square wave
Factory accuracy		≤5×10-¹¹¹
Frequency control	Voltage control	0~5V，with the total range of at least ±1.5×10⁻⁹
	Instruction adjustment	Seamless adjustment range of at least ±1×10-⁶ with a resolution of 6.81×10-¹³ coarse adjustment of at least ±1×10-⁶ and fine adjustment range of at least ±1.5×10-⁹ with a resolution of better than 1×10 -¹²
Locking time	Indoor temperature	≤5min
Frequency stability	1s	≤3×10-¹¹¹
	10s	≤1×10-¹¹¹
	100s	≤3×10-¹²
Phase noise	1Hz	≤-80dBc/Hz
	10Hz	≤-115dBc/Hz
	100Hz	≤-145dBc/Hz
	1kHz	≤-150dBc/Hz
	10kHz	≤-155dBc/Hz
Frequency drift rate	/day	±2×10-¹¹; FD12: ±1.2×10-¹¹; FD5: ±5×10-¹²; FD2: ±2×10-¹²
Frequency reproducibility	Switch 24h	±2 x 10-¹¹
Temperature Characteristics		≤5×10-¹⁰; TC3: ≤3×10-¹⁰; TC1: ≤1×10-¹⁰; TC0.5: ≤5×10-¹¹¹
Harmonic And Clutter		harmonic≤-30dBc，clutter≤-70dBc
Working temperature	Bottom plate temperature	-40℃ ~ +85℃; OT90: -45℃ ~ +90℃; OT95: -50℃ ~ +95℃
	Storage temperature	-50°C ~ +95°C
Power supply ±4%		±12V~±15V
Rate of work	Preheat	≤22.5W
	Steady state （+25℃）	≤13W
Body size		68mm×68mm×18mm
Bottom plate size		76mm×76mm
Weight		<300g
1PPS input		+3V~+5V TTL，Judder<300ns，Pulse width ＞ 100ns
1PPS output		Rising edge / Falling edge：≤ 10ns，Pulse width：1us~999ms，
Taming accuracy	After 24h of synchronization	Taming jet lag：±50ns，Time-keeping accuracy：≤1us@24h，Frequency accuracy：≤1×10⁻¹²@24h

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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