產(chǎn)品描述

Microsemi(并購(gòu)了Symmetricom公司) 5071A銫鐘（原Agilent產(chǎn)品），多年來(lái)由于其工作的高可靠性及優(yōu)異的準(zhǔn)確度、穩(wěn)定性，在全球時(shí)頻領(lǐng)域得到廣泛的認(rèn)可和使用。5071A操作簡(jiǎn)單方便，深受用戶(hù)喜愛(ài)。閃爍本底指標(biāo)低達(dá)≤1.0E-14。內(nèi)部銫束管有標(biāo)準(zhǔn)長(zhǎng)壽命管和高性能管可選。標(biāo)準(zhǔn)銫束管保修期達(dá)5年。

1. 5071A—滿(mǎn)足一級(jí)計(jì)量校準(zhǔn)實(shí)驗(yàn)室要求。
2. 國(guó)際上各守時(shí)和國(guó)家標(biāo)準(zhǔn)實(shí)驗(yàn)室證實(shí)了其內(nèi)部銫標(biāo)準(zhǔn)源相對(duì)于UTC的穩(wěn)定性和準(zhǔn)確度。一個(gè)標(biāo)準(zhǔn)源的準(zhǔn)確性和可靠性決定了守時(shí)實(shí)驗(yàn)室的服務(wù)質(zhì)量；標(biāo)準(zhǔn)源的穩(wěn)定性也極其重要，因穩(wěn)定性能直接影響實(shí)驗(yàn)室給客戶(hù)傳遞時(shí)間和校準(zhǔn)服務(wù)的能力。
3. 5071A提供優(yōu)異的穩(wěn)定性，也是首臺(tái)列明了超過(guò)一天平均時(shí)間的穩(wěn)定性指標(biāo)的銫頻標(biāo)。
4. 5071A使用方便，自動(dòng)啟動(dòng)和調(diào)整，無(wú)需手動(dòng)啟動(dòng)步驟和復(fù)雜的調(diào)整操作。邏輯菜單簡(jiǎn)化了前面板操作，選擇和狀態(tài)報(bào)告。遠(yuǎn)程控制功能滿(mǎn)足用戶(hù)的全面操作和易于管理的需求。

技術(shù)指標(biāo)

• Maintains exceptional accuracy andstability even in unstable environments—unsurpassed stability in the lab or field
• Accuracy ±1.0 x 10–12 for standard performance; ±5.0 x 10–13 for high performance
• Stability ≤1.2 x 10–11 for standard performance; ≤5.0 x 10–12 for high performance(for 1 second averaging time)
• Environmental stability ±1.0 x 10–13 forstandard performance; ±8.0 x 10–14 forhigh performance (frequency changefor any combination of environmentalconditions)
• Long-term stability ≤5.0 x 10–14 for standard performance; ≤1.0 x 10–14 for highperformance (for 5-day averaging time)
• Proven reliability with an average meantime between failures (MTBF) of greaterthan 160,000 hours
• Full traceability to NIST
• AC and DC input and internal battery

網(wǎng)絡(luò)協(xié)議

NTP v1.v2.v3&v4(RFC1119&1305) SNTP(RFC2030) MD5 Authentication（RFC1321）Telne（t RFC854） NTP Unicast,Broadcast,Multicast,Autokey TIME（RFC868) FTP（RFC959）DAYTIME（RFC867) DHCP (RFC2131) RSA 非對(duì)稱(chēng)加密 HTTP/SSL/HTTPS（RFC2616) SNMP v1,v2、 SSH/SCP (Internet Draft) MIB II (RFC1213)

重要特點(diǎn)

• 全狀態(tài)信息顯示
• 自動(dòng)記錄主要內(nèi)部事件
• 全面的時(shí)鐘和頻率控制
• 自動(dòng)同步1PPS信號(hào)
• 輸入：1PPS x 2
• 輸出：5 / 10 MHz x 2(可自設(shè)置)；100KHz x 1；1MHz x 1；1PPS x3

重要功能

性能指標(biāo)
項(xiàng)目		標(biāo)準(zhǔn)銫束管	高性能銫束管
初始頻率準(zhǔn)確度		≤1.0E-12	≤±5.0E-13
環(huán)境穩(wěn)定性		≤1.0E-13	≤±8.0E-14
頻率穩(wěn)定度 （阿倫方差）	0.01 s	≤7.5E-11	≤7.5E-11
	0.1 s	≤1.2E-11	≤1.2E-11
	1S	≤1.2E-11	≤5.0E-12
	10S	≤8.5E-12	≤3.5E-12
	100S	≤2.7E-12	≤8.5E-13
	1,000S	≤8.5E-13	≤2.7E-13
	10,000S	≤2.7E-13	≤8.5E-14
	100,000S	≤8.5E-14	≤2.7E-14
	5天	≤5E-14	≤1E-14
	30天	≤5.0E-14	≤1E-14
	閃爍本底	≤5.0E-14	≤1E-14
	典型值	≤1.5E-14	≤5.0E-15
相位噪聲 （dBc/Hz）	信號(hào)類(lèi)型	10MHz	5MHz
	1Hz	≤-100	≤-106
	10Hz	≤-130	≤-136
	100Hz	≤-145	≤-145
	1KHz	≤-150	≤-150
	10KHz	≤-154	≤-154
	100kHz	≤-154	≤-154

 

High-Performance Cesium Beam Tube

The 5071A high performance cesium beam tube is optimal for the most demanding operations. The high-performance tube offers a full-environment accuracy specification of ±5.0 x 10–13 —two times better than the specification for the standard tube. Stability is also significantly improved. The high-performance tube reaches a flicker floor of 1.0 x 10–14 or better, and longterm measurements at NIST show that the flicker floor is typically better than 5.0 x 10–15.

Integrated Systems and Remote Operation

1. Today, cesium standards are often integrated into telecommunication, satellite communication, or navigation systems asmaster clocks. To accommodate these environments, the 5071A
2. provides complete remote control and monitoring capabilities. Instrument functions and parameters can be interrogatedprogrammatically.
3. Communication is accomplished using the standard commandsfor programmable instruments (SCPI) language and a dedicatedRS-232C port. Also, a rear panel logic output can be programmed to signal when user-defined abnormal conditions exist.
4. For uninterruptible system service, an internal battery provides45 minutes of backup in case of AC power failure. Thus,the 5071A can be managed easily even in the most remotelocations.

 

 

 

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