SG380系列射频信号发生器美国SRS详细介绍

SG380系列的射频信号发生器使用一个独特的、创型的结构(有理近似频率合成技术)提供***频率分辨率(1?Hz),***的相位噪声,多种的调制功能(AM、FM、?M、脉冲调制等)成本合理，具竞争力。
标准型号产生正弦波从直流到2.025 GHz(SG382),4.05 GHz(SG384)和6.075 GHz(SG386)，通过选配附件*高可做到8GHz。

主要技术参数

频率设置
频率范围            DC to 62.5 MHz (BNC output)
                           950 kHz to 4.05 GHz (N-type output)
                           4.05 GHz to 8.1 GHz (opt. 02)
    频率分辨率    1 μHz at any frequency
    开关速度        <8 ms (to within 1 ppm)
    频率误差        <(10?18 +timebase error)×fC
    频率稳定度    1×10?11 (1 s Allan variance)
前面板BNC输出
   频率范围         DC to 62.5MHz
   振幅                1.00 Vrms to 0.001Vrms
   偏移                ±1.5VDC
   偏移分辨率     5mV
Max. excursion   1.41V (amplitude + offset)
振幅分辨率        <1%
振幅精度            ±5%
谐波                   <–40 dBc
Spurious            <–75 dBc
输出耦合            DC, 50Ω ±2%
User 负载          50Ω
反向保护            ±5VDC
前面板N型输出
频率范围             950 kHz to 4.05GHz
功率输出             +13 dBm to –110dBm
输出电压             1Vrms to 0.7μVrms
功率分辨率          0.01 dBm
功率精准度          ±1 dB
输出耦合              AC, 50Ω
User 负载            50Ω
电压驻波比           <1.6
反向保护              30 VDC, +25 dBm RF
光谱纯度的输出功率为1GHz(* Spurs, phase noise and residual FM scale by 6 dB/octave to other carrier frequencies)
子谐波                 None
谐波                     <–25 dBc (<+7 dBm, N-type output)

Spurious               <10 kHz offset <–65 dBc
                              >10 kHz offset <–75 dBc
相位噪声               10 Hz offset –80 dBc/Hz (typ.)
                              1 kHz offset –102 dBc/Hz (typ.)
                              20 kHz offset –116 dBc/Hz (typ.)
                              1 MHz offset –130 dBc/Hz (typ.)
剩余调频(典型)        1 Hz rms (300 Hz to 3 kHz BW)
剩余调幅（典型）    0.006 % rms (300 Hz to 3 kHz BW)
相位设置在前端面板输出
*大位相距离            ±3600
位相分辨率                0.010 (DC to 100 MHz)
                                  0.10 (100 MHz to 1 GHz)
                                  1.00(1 GHz to 8.1 GHz)
标准OCXO时基       

振荡器类型                   Oven controlled, 3rd OT, SC-cut crystal
稳定性（0到45℃）    <±0.002 ppm
老化                              <±0.05 ppm/year
铷时基（选项04）
振荡器类型                 Oven controlled, 3rd OT, SC-cut crystal

物理包（Physics package） Rubidium vapor frequency discriminator
稳定性（0到45℃）     <±0.0001 ppm
老化                             <±0.001 ppm/year

基时（Timebase）输入
频率                             10 MHz, ±2 ppm
振幅                             0.5 to 4 Vpp (–2 dBm to +16 dBm)
输入阻抗                      50 Ω, AC coupled
基时（Timebase）输出
频率                             10 MHz, sine
Source                         50Ω, DC transformer coupled
振幅                             1.75Vpp ±10% (8.8dBm ± 1dBm)
内部调制源
波形                             Sine, ramp, saw, square, pulse, noise
正弦总谐波失真           –80 dBc (typ. at 20 kHz)
斜坡线性                      <0.05 % (1 kHz)
速率                             1 μHz to 500 kHz (fC <62.5 MHz)
                                     1 μHz to 50 kHz (fC > 62.5 MHz)
速率分辨率                   1 μHz
速率误差                      1:231+ timebase error
噪声函数                       White Gaussian noise (rms = dev / 5)
噪声带宽                      1 μHz 脉冲发生器时间           1 μs to 10 s
脉冲发生器宽度           100 ns to 9999.9999 ms
脉冲定时分辨率           5 ns
脉冲噪声功能               PRBS 25–219. Bit period (200+ 5N) ns
调制波形输出     
输出阻抗                      50Ω (for reverse termination)
User 负载                    Unterminated 50Ω coax
AM, FM, ΦM                ±1V for ± full deviation
脉冲/空白                     “Low” = 0V, “High” = 3.3VDC
外部调制输入      
模式                             AM, FM, ΦM, Pulse, Blank
未调制的水平              0V input for unmodulated carrier
AM, FM, ΦM                ±1 V input for ± full deviation
调制带宽                      >100 kHz
调制失真                      <–60 dB
输入阻抗                     100kΩ
输入失真                     <500μV
脉冲,空白阈值             +1VDC
振幅调制
范围                             0 to 100 % (decreases above +7 dBm)
分辨率                          0.1%
调制源                          Internal or external
调制失真
BNC输出                      <0.1 % (fC <62.5 MHz, fM = 1 kHz)
N型输出                        <3 % (fC <62.5 MHz, fM = 1 kHz)
调制带宽                       >100 kHz
调频
频率漂移                       10 Hz to 1MHz
偏差分辨率                    Larger of 1 Hz or 0.1 % of deviation
偏差精准度                    <0.1 % (fC <62.5 MHz)
                                       <3 % (fC > 62.5 MHz)
调制源                           Internal or external
调制失真                        <–70 dB (fC = 1 GHz, fM = fD = 20 kHz)
Ext. FM carrier offset     <1:1,000 of deviation
调制带宽                         >100 kHz
连续扫描（阶段扫频）
频率跨度                         10 Hz to entire sweep range
扫描范围                         DC to 62.5MHz
                                        59.375 MHz to 128.125MHz
                                        118.75 MHz to 256.25MHz
                                        237.5 MHz to 512.5MHz
                                        475 MHz to 1025MHz
                                        950 MHz to 2050MHz
                                        1900 MHz to 4100MHz
                                        3800 MHz to 8200 MHz (Opt. 02 only)
偏差分辨率          Larger of 1 Hz or 0.1 % of deviation
扫描源                 Internal or external
扫描变形              <0.1 Hz + (deviation / 1,000)
扫描抵消              <1:1,000 of deviation
扫描功能              Triangle or ramp sweeps up to 120 Hz
相位调制
偏差                      0 to 360o
偏差分辨率           0.01o to 100 MHz
                              0.1o to 1 GHz
                             1o above 1GHz
偏差精度               <0.1 % (fC <62.5 MHz)
                              <3 % (fC > 62.5 MHz)
调制源                   Internal or external 
调制失真                <–70 dB (fC = 1 GHz, fM=ΦD = 20 kHz)
调制带宽                >100 kHz
脉冲,空白阈值  
脉冲模式                Logic “High” turns RF “on”
Blank mode           Logic “High” turns RF “off”
开/关比                  40 dB (1 GHz to 4 GHz)
                              60 dB (100 MHz to 1 GHz)
                              75 dB (DC to 100 MHz)
上升下降时间        20 ns
打开/关延迟           60 ns
调制源                   Internal or external pulse
外部I / Q调制(选择3)。
载波频率范围         400 MHz to 4.05GHz
调制输出                 Front-panel N-type only
I / Q输入                 50 Ω, ±0.5V
I或Q输入偏移         <500μV
I / Q满量程             (I2+Q2)1/2 = 0.5V
载波抑制                 >40 dBc
调制带宽                 200 MHz (–3 dB)
方波时钟输出（选项01）
微分时钟                 Rear-panel SMAs drive 50Ω loads
频率范围                 DC to 4.05GHz
转换时间（典型值）  <35 ps (20 % to 80 %)
Jitte                            fC > 62.5MHz <300 fs rms (1 kHz to 5 MHz BW)
                                   fC <62.5MHz <10–4 U.I. rms (1 kHz to 5 MHz BW)
振幅                            0.4 Vpp to 1Vpp
偏移                            ±2VDC
Ampl/偏移分辨率        5mV
Ampl/偏移分辨率       ±5%
输出耦合                    DC, 50Ω ±2 %
Compliance               ECL, PECL, RSECL, CML, LVDS, NIM
倍频输出（选项02） 
输出                           Rear-panel SMA
频率范围                    4.05 GHz to 8.10GHz
RF幅度                      –15 dBm to +7dBm
分谐波(fC/2)               <–25 dBc
混合产品（3fC / 2）  <–25 dBc
谐波 (n ×fC)               <–25 dBc
杂散（8千兆赫）       <–55 dBc (>10 kHz offset)
相位噪声（8千兆赫） –98 dBc/Hz at 20 kHz offset (typ.
幅度分辨率                 0.01dBm
幅度精度                     ±1 dB
调制模式                     FM, ΦM, sweeps
输出耦合                     AC, 50Ω
Reverse protection          30 VDC, +25 dBm RF
直流偏置电源(有选择02)。
输出                            Rear-panel SMA
电压范围                    ±10V
偏移电压                    <20mV
DC 精度                     ±0.2%
DC分辨率                  5mV
输出电阻                    50Ω
限流                           20mA
计算机接口 
以太网(LAN)              10/100 Base-T.TCP/IP & DHCP default
GPIB                          IEEE488.2
RS-232                       4800 to 115,200 baud, RTS/CTS flow
线功率                        <90W, 90 to 264VAC, 47 to 63 Hz w/ PFC
尺寸 重量                   8.5" × 3.5" × 13" (WHD), 10 lbs.
保修                            一年部件和手工