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Rubidium Oscillator

XHTF1022C Ultra-Thin Rubidium Oscillator

​ - Size: 96mm×76mm×22mm (L* W* H), volume is 160ml;
- High reliability: Suitable for ground military vibrating environment;
- Wide temperature range: -45~+75℃

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1) Features

- Size: 96mm×76mm×22mm (L* W* H), volume is 160ml;

- High reliability: Suitable for ground military vibrating environment;

- Wide temperature range: -45~+75℃;

- Timing holdover: After being disciplined, it can meet 5μs/3 days (typical value).


2) Application

Specially designed for ground telecommunication, vehicle, naval vessel etc. vibrating environment, it can be assembled in the board equipment, providing precise and stable timing frequency standard.


3) Specification

3.1 Ordering Model

In order to meet up different customer’s requirements, we use production number (PN) to verify different performance, the ordering model is made up by product model and its technical level. Customer is recommended to use the following method when placing and order:

1673495115339.jpg

For example, if customer orders XHTF1022C-S, it means frequency temperature performance is 8E-10, holdover is 5μs /3 days.

3.2 Output Standard Signal (50Ω loading)

- Frequency: 10MHz

- Channel: one way

- Wave form: sine

- Voltage: >5dBm

- Harmonic: <-40dB

3.3 Accuracy: <±5E-11 at 25℃

3.4 Lock time:

- ≤5min (@+25℃)

- ≤15min (@-45℃)

3.5 Frequency stability

- <3×10-11/1s;

- <9×10-12/10s;

- <3×10-12/100s.

3.6 Drifting: Day aging <±5×10-12

3.7 Temperature accuracy:

Within -45℃~+70℃, its accuracy meets up the following requirements, and it can be locked at +70~+75℃.

Level number P or blank C

Accuracy: <5×10-10 <8×10-10

3.8 Repeatability: <2×10-11

3.9 Output pulse (the same source with 10MHz):

- Frequency:1pps

- Chanel: one

- Electric level(latitude): >3V

- Rise time: <15ns

- Width: >1μs

3.10 GPS External Second Disciplining and Holding

External second discipling function: XHTF1022C can be connected to GPS reference second, discipline frequency accuracy output from atomic clock.

Accuracy holding (environment temperature fluctuation ≤5℃, no obvious mechanical vibration): After discipling for one hour by GPS, average accuracy within 3 days (or holdover within 3 days) meets the following specification:

Level

L

S or Blank

H

Average accuracy

≤±2.7×10-11

≤±1.9×10-11

≤±1.1×10-11

Or Holdover

≤7μs

≤5μs

≤3μs

Note: GPS jitter shall be less than100ns.


3.11 Frequency Adjustment

Accuracy can be adjusted through serial port, resolution is ≤1E-12, range is ≥±2E-9.

3.12 Power and Voltage

Power supply : +12V±0.4V DC

Voltage: initial consumption<32W, steady consumption <8W (at +25℃)

3.13 Operating temperature

-45℃~+75℃, ensure it can be locked within this range, and meet up with temperature accuracy requirement.

3.14 Storage temperature

-55℃~+85℃, moisture is less than 95% (30℃).

3.15 Function Vibration Test


Table - 2 Vibration Test Condition

Vertical

Side direction

Navigation direction

Frequency (Hz)

Spectrum density (g2/Hz)

Frequency (Hz)

Spectrum density (g2/Hz)

Fre (Hz)

Spectrum density (g2/Hz)

15

0.09

15

0.03

15

0.016

19

0.09

17.5

0.03

67

0.016

22.5

0.045

21

0.01

105

0.187

27.5

0.045

85

0.01

125

0.187

32.5

0.1

160

0.2

195

0.005

42.5

0.1

200

0.2

342

0.005

56

0.01

235

0.015

427

0.065

200

0.01

350

0.015

478

0.065

450

0.37

400

0.052

610

0.005

700

0.37

530

0.052

1019

0.005

897

0.04

600

0.134

1150

0.032

1517

0.04

1200

0.134

2000

0.032

2000

0.009

2000

0.003



RMS

13.8g

RMS

11.7g

RMS

7.13g


3.17 External Appearance

XHTF1022C dimension is, its weight is <0.35kg.

1673495123527.jpg


Table -3 Interface Pins Definition

No.

Connection Type

Pin.

Definition

Description

X1

J30J

1

Lock indication

TTL: lock 0V, unlock 5V.

2

Ground

Negative power

3

RXD

As receiving terminal of RS-232C

4

TXD

As sending terminal of RS-232C

5

NC

NC

6

1PPS input

As 1PPS reference input terminal

7

+12V power

Positive power

8

1PPS output

As 1PPS receiving terminal

9

NC

Backup

X2

SSMA

10MHz

10MHz output


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    Tel: +86-28-61070147

    +86-28-87559167

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    E-mail: xrsisu@163.com
    Add: No.2 Building Guobin Base, Jinke East Rd, Jinniu District, Chengdu City, China.
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