SG380射频信号发生器

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

功率精确度          ±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

偏差精确度                    <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.

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