仪器简介：

美国PTS公司（Programmed Test Source,Inc.）是国际知名的高性能频率合成器（频率综合器）的生产商，具有品质可靠、切换迅速、相位噪声低、产品线齐全等特点，是众多知名企业如A.D.，G.E.，Motoroal，Philips，Siemens，Toshiba等的合作伙伴。频率合成器是以一个精确度、稳定度极好的石英晶体震荡器作为基准频率，利用加、减、乘、除等基本运算技术，以获得与石英晶体震荡器同等精确度和稳定度的大量离散频率信号的设备。它广泛应用于通讯设备、雷达、导航、频率时间标准等各个技术领域。例如，在各种精密仪表中，频率合成器能提供高分辨率、低噪声（相位噪声）的信号，以适应各种精密测量的需要。

技术参数：

SPECIFICATIONS

Frequency 
Range: 1******Hz to 6399.999 999 9 MHz
Resolution: 1 Hz
Accuracy same as frequency standard
Control: manual by keyboard and LCD;
remote by TTL-level parallel entry BCD or GPIB (optional)

Switching Time

(to within 0.1 radian at new frequency)
1 GHz - 10 MHz digit: 20 μseconds
1 MHz digit: 5 μseconds
100 KHz - 1 Hz digit: 1 μsecond transient, 2 μsecond delay

Phase-Continuous  Switching Range:

100 KHz through 1 Hz digits
(~1 MHz bandwidth)

Output

Level: -3 to +7 dBm (500mV max., 50Ω)
Flatness: ±1.0 dB
Impedance: 50 Ω
Control: manual by front panel control; remote by analog
voltage
Connector: SMA female

Spurious Outputs

(at full power output, +7 dBm)
Discrete: -60 dBc 1 -3200MHz
-55 dBc 3200 -6400 MHz
Subharmonics: -45 dBc 1600 -6400 MHz
Harmonics: -30 dBc
Phase Noise: -60 dBc (0.5 Hz to 15 KHz) including effects of
internal standard
L (1Hz):
1600 - 3200 MHz: 100 Hz/ -99dBc, 1 KHz/-108 dBc, 10 KHz/-116 dBc,
100 KHz/-118 dBc
Noise Floor:
1600 - 3200 MHz: -136 dBc/Hz
L (1Hz) & Noise Floor:
1 -1600MHz: improved by 6 dB
3200 - 6400 MHz: degraded by 6 dB

Frequency Standard

Internal:

   OCXO            or                    TCXO 
3 x 10-9/day                     1 x 10-8/day
±1 x 10-8/0 - 50ºC        ±1 x 10-6/0 - 50ºC
1 x 10-6/year                   2 x 10-6/year

External:

10 MHz, 0.4-2.0 Vrms into 300 Ω;
5 MHz, 0.5-2.0 Vrms into 300 Ω }BNC Connector
Aux. Output: 10.000 MHz, 0.4 Vrms into 50 Ω
(Note: internal or external standard required for operation)

General

Operating Ambient: 10 - 45ºC, 95% R.H.
Power: 105 - 125V, 50 - 60 Hz, 70W (100, 220, 240V optional)
Dimensions: 19 x 5.25 x 18 inches (relay rack or bench cabinet)
Weight: 40 lbs

主要特点：

1MHz至6400MHz的频率范围
－3至＋7dBm的输出水平
1Hz频率分辨率，DDS相位连续切换
卓越的相位噪声和乱真输出指标
3－20µs的切换时间
完全的BCD或GPIB可编程遥控
低功耗，高稳定性，三年质保