产品说明

      基于铯钟的开发经验,根据时间同步提出的更高要求,OSA致力于开发精度更高、运行更加稳定的新一代铯钟。OSA3300光抽运铯钟开始向中国用户交付。主要性能指标如下:


OSA3300 光抽运铯钟



Frequency accuracy

Frequency accuracy

≤ +/- 5x10-13

Frequency reproducibility after power cycle

≤ +/- 1x10-13

Frequency offset adjustments

Resolution

+/-1x10-15

Range

+/- 1x10-9

Frequency stability versus magnetic field

versus +/- 1 Gauss

≤ +/- x10-13

Short-Term Stability (frequency outputs), Allan Deviation

Tau (T)

HP/10Y

SHP/10Y

1s

≤ 5x10-12

≤ 3x10-12

10s

≤ 3.5x10-12

≤ 1.5x10-12

100s

≤ 8.5x10-13

≤ 4.5x10-13

1'000s

≤ 2.7x10-13

≤ 1.5x10-13

10'000s

≤ 8.5x10-14

≤ 4.5x10-14

100'000s

≤ 2.7x10-14

≤ 1.5x10-14

5 days

≤ 1x10-14

≤ 8x10-15

30 days

≤ 1x10-14

≤ 8x10-15

Floor(guaranteed)

≤ 1x10-14

≤ 8x10-15

Floor

≤ 5x10-15

≤ 5x10-15

Warm-up time

60 minutes@ 25°C

Low Noise frequency outputs

number of 10MHz outputs

2

number of 5 MHz outputs

1

number of 100 MHz output

1

signal format

sine wave

Connector

SMA/F

Load Impedance

50Ω

Amplitude

10 dBm Min, 13 dBm typical

Harmonics

≤ -40 dBc

Non Harmonics (Spurious)

≤ -80 dBc

Isolation between outputs

-110 dB

SBB Phase noise

5 MHz output

1Hz

-106 dBc/Hz

10Hz

-136 dBc/Hz

100Hz

-145 dBc/Hz

1'000Hz

-150 dBc/Hz

10'000Hz

-154 dBc/Hz

floor

-154 dBc/Hz

SBB Phase noise

10MHz output

1Hz

-100 dBc/Hz

10Hz

-130 dBc/Hz

100Hz

-145 dBc/Hz

1'000Hz

-150 dBc/Hz

10'000Hz

-154 dBc/Hz

floor

-154 dBc/Hz

SBB Phase noise

100 MHz output

1Hz

-70 dBc/Hz

10Hz

-90 dBc/Hz

100Hz

-105 dBc/Hz

1'000Hz

-115 dBc/Hz

10'000Hz

-120 dBc/Hz

floor

-120 dBc/Hz

Timing Digital Outputs

Number of 1PPS outputs

4

Frequency

1 Hz

Connector

BNC/F

Signal format

pulse LVCMOS

Load Impedance

50Ω

Amplitude

2.5 Vpp with 50Ω load

Jitter

≤1 ns RMS

Rising edge

≤5 ns (10% to 90%)

Output shape

pulse

Output timing signal significant slope

positive

Pulse width

20 µs

Synchronisation Input

Number of 1PPS input

1

Frequency

1 Hz

Connector

BNC/F

Signal format

pulse LVCMOS

Load impedance

50 Ω or 1 MΩ (programmable)

Amplitude

Min 2.5V, Max 5V

Pulse width

100ns-100µs

Input timing signal significant slope

Positive or Negative (programmable)

Power supply and Battery options

Number of Power supply modules

2

Redundant

Yes

Hot Swappable

Yes

Automatic Switching

Yes

Option1

AC 110-240V, C15 connector

range 88V up to 264V/ range 45 Hz up to 65 Hz

Option2

DC +24V (range 18V up to 30V)

Option3

DC-48V (accepted range -36V up to -72V)

Power consumption steady state @ 25°C

≤50W

Power consumption at warm-up

≤90W

Battery option

60 minutes operation (full charge)

Charge time from empty load

4 hours

Environment

Operating temperature

+10°C - +50°C

Non Operating Temperature

-40°C -+70°C

Operating Relative Humidity

10% - 90% non condensing

Operating DC Magnetic field

0 Gauss to 2 Gauss any direction

Mechanical

table top

Yes

19'' rack moutable

Yes: 19'' 3U

Width /with rack ears

450 mm/482.6 mm

Depth

510 mm

Height

132 mm

Weight

25 kg



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