PLOA260 Analog Phase-Locked Thermostatic Oscillator

Analog phase-locked thermostat Crystal Oscillators

PLOA260 is a low noise analog phase-locked oscillator which is based on the standard form factor design of BDSTAR TIME, and integrates 1 high performance thermostatic crystal, 1 digital phase-locked loop and 3 isolation amplifiers, and also can be Customized with 1 low phase noise 5MHz crossover output, 5Hz fixed bandwidth filament, 1Hz phase noise, and 1s fixed degree following standard. While the far end noise is determined by the local low noise crystal oscillator, the PLOA260 can be used to optimize the output noise of the clockkeeping room phase trimmer, and is suitable for connecting to the hydrogen clock set phase trimmer, which improves the phase noise performance while maintaining the hydrogen clock second stability

Analog phase-locked thermostat Crystal Oscillators

Important Features

Pure analog low-noise phase lock with built-in ultra-lownoise thermostatic crystal oscillator
Standard structure, only 19mm high, which can be stacked for installation
DSUB9 Connector and the SMA RF connector
3-way 10 MHz and optional 1-way 5 MHz output
+12~+15VDC power supply

Important Features

Test Item	Condition	Technical Indicators
Input frequency		1-way 10 MHz
Input power range		5dBm~15dBm
Input accuracy		±2×10-⁷
Output frequency		3-way 10MHz , 1-way 5MHz
Digital phase-locked bandwidth		3Hz~8Hz for customization
Output frequency stability	1s	≦5×10-¹⁴
10MHz Phase noise dBc/Hz	1Hz	≤ -125
	10Hz	≤ -135
	100Hz	≤ -155
	1kHz	≤ -160
	10kHz	≤ -160
	100kHz	≤ -160
5MHz Phase noise dBc/Hz 【optional】	1Hz	≤ -130*
	10Hz	≤ -141
	100Hz	≤ -161
	1kHz	≤ -166
	10kHz	≤ -166
	100kHz	≤ -166
Working temperature		-20℃~+70℃
Storage temperature		-55℃~+125℃
power supply		+12V~+15V
Power-on current		≦0.8A
Steady-state current		≦0.5A
Body size		138mm×86mm×19mm

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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