SRS PRS10 铷原子钟

低噪声（于10hz小于-130dbc/hz)
可用1pps输入信号锁定输出
可实现一级标准达72小时
可通过rs232接口进行测试，控制及校准
寿命可达20年

具体的规格参数如下：
♦输出
输出频率                               10 mhz sine wave
振幅                                       0.5 vrms, ±10 %
相位噪声 (ssb)                  <−130 dbc/hz (10 hz)
                                               <−140 dbc/hz (100 hz)
失真度                                   <−130 dbc (100 khz bw)
谐波失真                               <−25 dbc
回波损耗                               >25 db @ 10 mhz
精度                                       ±5 × 10−11
老化(after 30 days)             <5 × 10−11 (monthly)
                                               <5 × 10−10 (yearly)
短期稳定性                           <2 × 10−11 (1 s)
(allan variance)                   <1 × 10−11 (10 s)
                                               <2 × 10−12 (100 s)
holdover                              72 hour stratum 1 level
frequency retrace              ±5 × 10−11 (72 hrs. off then 72 hrs. on)
settability                             <5 × 10−12
调整范围                              ±2 × 10−9 (0 to 5 vdc)
                                               ±1 ppm (via rs-232)
预热时间                              <6 minutes (time to lock)
                                              <7 minutes (time to 1 × 10−9)
电压灵敏度                          <2 × 10−11 (1 vdc supply change)
♦电相关
输入电压                              +24 vdc (nom.), +22 vdc (min.),
                                              +30 vdc (max.)
电流                                      2.2 a (warm-up), 0.6 a (steady-state)at 25 °c (note 1)
保护电压                             ±30 vdc to any pin except rf out
rf protection                     100 ma (stable w/ any termination)
cal reference out               5.00 ±0.05 vdc
rs-232                                9600 baud, 8 bits, no parity, 1 stop bit, 0 to 5v levels with x-on/x-off protocol
1 pps 测试                           ±10 ns (accuracy), ±1 ns (resolution)
1 pps 输出设定                   ±10 ns (accuracy), ±1 ns (resolution)
♦外部环境
操作温度                              −20 °c to +65 °c (baseplate)
温度稳定性                          ±1 × 10−10(−20 °c to +65 °c baseplate)
存储温度                             −55 °c to +85 °c
磁场                                      <2 × 10−10 for 1 gauss field reversal
相对湿度                             95 % (non-condensing)
♦规格
设计年限                             20 yrs.
尺寸                                     2.00" × 3.00" × 4.00" (hwd)
重量                                     1.32 lbs.
底板螺纹                             4-40 (4 places)
连接器                                 mates with itt/cannon dam11w1s