1、 Overview

SSG520 can achieve a frequency resolution of 1Hz across the entire frequency range, while ensuring spectral performance. It covers frequencies from 100kHz to 1004MHz (SSG520: 100kHz to 2002MHz; SSG520A: 100kHz to 3000MHz), and its output level range can reach -127dBm to+13dBm. It is a new generation of high-performance synthetic signal generator.

This instrument has the characteristics of high measurement accuracy, reliable performance, and easy use, and is particularly suitable for applications in the fields of national defense, scientific research, teaching, and communication.

2、 Technical indicators

1. Frequency

★ Output frequency range:

SSG520 :100kHz～1003.999999MHz; SSG520A:100kHz～2002MHz

★ Frequency resolution: ＜ 1004MHz: 1Hz; ≥1004MHz : 2Hz

★ Frequency stability: 10-8/day

2. Level

★ Output level range:

SSG520:-127dBm～+13dBm

SSG520A (＜1004MHz) : -127dBm～+10dBm; (≥1004MHz): -127dBm～+7dBm

★ Amplitude resolution: 0.1dB

★ Level flatness: (＜1004MHz) : ±1dB; (≥1004MHz) : ±2dB

★ Standing wave ratio: (＜1004MHz) : ＜1.5; (≥1004MHz) : ＜2

3. Wave frequency purity

★ Harmonic (output level £+4dBm): ＜- 30dBc

★ Non harmonic (output level £+4dBm, deviation from carrier frequency ³ 5kHz):

＜251MHz ＜-50dBc

251MHz £ Frequency ＜ 1004MHz ＜ -60dBc

≥1004MHz ＜-50dBc

★ Sub harmonic (output level £+4dBm, typical value):

＜1800MHz ＜-50dBc

≥1800MHz ＜-40dBc

★ Remaining frequency modulation (0.3~3kHz, rms, typical value):

＜251MHz <20Hz

＜502MHz <10Hz

＜1004MHz <20Hz

≥1004MHz <40Hz

★ Single sideband phase noise (deviation from carrier frequency>20kHz, typical value):

When the carrier frequency is 500MHz, it is less than -114dBc/Hz

When the carrier frequency is 1000MHz, it is less than -110dBc/Hz

When the carrier frequency is 2000MHz, it is less than -104dBc/Hz

4. Frequency modulation

★ Peak frequency offset (AC frequency modulation, rate>25Hz): When (RF frequency frequency offset)<100kHz, there is no frequency modulation index

＜251MHz 0~100kHz

＜502MHz 0~50kHz

＜1004MHz 0~100kHz

≥1004MHz 0~200kHz

★ Accuracy (internal 1kHz modulation rate):

<1004MHz ± 7.5% set value ± 50Hz

1004MHz ± 7.5% set value ± 100Hz

★ Resolution:

£ 10% maximum peak frequency offset 10Hz

>10% maximum peak frequency offset 100Hz

★ Modulation rate:

Internal 1kHz or 400Hz

External DC~50kHz (typical value, 3dB bandwidth)

External communication 50Hz~50kHz (typical value, 3dB bandwidth)

Mixed modulation of endogenous (1kHz or 400Hz)+exogenous (exogenous £ 0.5Vpk or 0.5Vdc)

★ Distortion: (Internal modulation rate 1kHz, BW: 0.3~3kHz, typical value)

<1004MHz<1% (peak frequency offset>4kHz)

1004MHz ＜ 1% (peak frequency offset>8kHz)

5. Phase modulation

★ Phase offset:

<251MHz 0~10rad

<502MHz 0~5rad

<1004MHz 0~10rad

³1004MHz 0~20rad

★ Resolution: 0.01rad

★ Accuracy (internal 1kHz, typical value):

<1004MHz ± 7.5% set value ± 0.05rad

1004MHz ± 7.5% set value ± 0.1 rad

★ Modulation rate:

Internal 1kHz or 400Hz

External communication 50Hz~10kHz (typical value, 3dB bandwidth)

★ Distortion (modulation rate 1kHz, BW: 0.3~3kHz, typical value):

<1004MHz<2% (phase offset of 3 rad)

1004MHz ＜ 2% (phase offset of 6rad)

6. Amplitude modulation

★ RF frequency: ³ 1.5MHz (no assessment criteria for frequencies<1.5MHz)

★ Amplitude modulation depth: 0~70% (output level £+4dBm)

★ Resolution: 0.1%

★ Accuracy (internal 1kHz modulation rate, modulation depth of £ 30%, typical value): ± 7% set value ± 1.5%

★ Modulation rate:

Internal 1kHz or 400Hz

External DC~25kHz (typical value, 3dB bandwidth)

External communication 20Hz~25kHz (typical value, 3dB bandwidth)

★ Distortion (modulation rate 1kHz, modulation depth of 30%, BW: 0.3~3kHz, typical value):

Carrier frequency<1004MHz<2%

Carrier frequency ³ 1004MHz ＜ 3%

★ Remaining amplitude modulation (0.05~15kHz, AVG, typical value): ＜ 0.1%

★ Modulation source

Impedance: 600W (BNC)

★ Internal modulation source output

Speed: 1kHz or 400Hz

Amplitude: 1Vpk

★ External modulation source input

Amplitude: 1Vpk (full scale modulation)

At a modulation frequency of £ 10kHz, there is a high/low level indication.

7. Pulse modulation

★ Rise/Fall Time:< 15ns

★ On off ratio:> 55dB

★ Modulation signal:

Pulse repetition rate DC~10MHz

Pulse input amplitude TTL level