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。

SPECIFICATIONS
Frequency
Range: 1******Hz to 3199.999 999 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 100 KHz through 1 Hz digits
Switching Range: (~1 MHz bandwidth)
Output Level: +3 to +13 dBm (1V max, 50 Ω)
Flatness: ±0.7 dB
Impedance: 50 Ω
Control: manual by front panel control; remote by analog
voltage
Connector: SMA female
Spurious (at full power output, +13 dBm)
Outputs Discrete: -60 dBc 1-1600 MHz
-55 dBc 1600 - 3200 MHz
Harmonics: -30 dBc (-35 dBc at lower power level)
Phase Noise: -60 dBc (0.5 Hz to 15 KHz) including effects of
internal standard
L (1Hz): 100 Hz/-99 dBc, 1 KHz/ -108 dBc, 10 KHz/ -116 dBc,
100 KHz/ -118 dBc
Noise Floor: -130 dBc/Hz
Frequency Internal: OCXO or TCXO
Standard 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 - 400 Hz, 70W (100, 220, 240V optional)
Dimensions: 19 x 5.25 x 18 inches (relay rack or bench cabinet)
Weight: 35 lbs
Optional Phase
Rotation: 0 - 360° in .36° steps (in .72° steps,1600 - 3200 MHz)

PTS 3200 FREQUENCY SYNTHESIZER
• 1 MHz to 3200 MHz
• + 3 to + 13 dBm output
• 1 Hz resolution with DDS phase-continuous switching
• low phase noise
• fast switching, 3 - 20μs
• fully remote control programmable, BCD or GPIB
• modular flexibility, remote-only versions
• low power consumption, high reliability