SG380 Series – Signal generators to 6 GHz

Technical Specifications

Frequency Setting
Frequency ranges: DC to 62.5 MHz (BNC output, all models)
SG382: 950 kHz to 2.025 GHz (N-type output)
SG384: 950 kHz to 4.05 GHz (N-type output)
4.05 GHz to 8.1 GHz (w/ Opt. 02)
SG386: 950 kHz to 6.075 GHz (N-type output)
6.075 GHz to 8.1 GHz (w/ Opt. 02)
Frequency stability: <1?10-11 (1 s Allan variance)
Frequency resolution: 1 ?Hz at any frequency
Switching speed: <8 ms (to within 1 ppm)
Frequency error: <(10?18 + timebase error) ? fC

Front-Panel BNC Output
Frequency range: DC to 62.5 MHz
Amplitude: 1.00 to 0.001 Vrms
Offset: ?1.5 VDC
Offset resolution: 5 mV
Max. excursion: 1.817 V (amplitude + offset)
Amplitude resolution: <1 %
Amplitude accuracy: ?5 %
Harmonics: <-40 dBc
Spurious: <-75 dBc
Output coupling: DC, 50 ? ?2 %
User load: 50 ?
Reverse protection: ?5 VDC

Front-Panel N-Type Output
Frequency range
SG382: 950 kHz to 2.025 GHz
SG384: 950 kHz to 4.05 GHz
SG386: 950 kHz to 6.075 GHz

Power output
SG382: +16.5 dBm to -110 dBm
SG384: +16.5 dBm to -110 dBm (<3 GHz)
SG386: +16.5 dBm to -110 dBm (<4 GHz)

Voltage output
SG382: 1.5 Vrms to 0.7 ?Vrms
SG384: 1.5 Vrms to 0.7 ?Vrms (<3 GHz)
SG386: 1.5 Vrms to 0.7 ?Vrms (<4 GHz)

Power resolution: 0.01 dBm
Power accuracy: ?1 dB (?2 dB above 4 GHz and above +5 dBm or below -100 dBm)
Output coupling: AC, 50 ?
User load: 50 ?
VSWR: <1.6
Reverse protection: 30 VDC, +25 dBm RF
Spectral Purity of RF Out (Referenced to 1 GHz*)
Sub harmonics: None (no doubler used below 4 GHz)
Harmonics: <-25 dBc (<+7 dBm on N-type output)

Spurious
<10 kHz offset: 10 kHz offset: <-75 dBc

Phase noise (typ.)
10 Hz offset: -80 dBc/Hz
1 kHz offset: -102 dBc/Hz
20 kHz offset: -116 dBc/Hz (SG382 & SG384), -114 dBc/Hz (SG386)
1 MHz offset: -130 dBc/Hz (SG382 & SG384), -124 dBc/Hz (SG386)
Residual FM (typ.): 1 Hz rms (300 Hz to 3 kHz bandwidth)
Residual AM (typ.): 0.006 % rms (300 Hz to 3 kHz bandwidth)
* Spurs, phase noise and residual FM scale by 6 dB/octave to other carrier frequencies

Phase Setting on Front-Panel Outputs
Max. phase step: ?360?
Phase resolution: 0.01? (DC to 100 MHz)
0.1? (100 MHz to 1 GHz)
1.0? (1 GHz to 8.1 GHz)

Standard OCXO Timebase
Oscillator type: Oven controlled, 3rd OT, SC-cut crystal
Stability (0 to 45? C): Aging: Oscillator type: Oven controlled, 3rd OT, SC-cut crystal
Physics package: Rubidium vapor frequency discriminator
Stability (0 to 45? C): Aging: Frequency: 10 MHz, ?2 ppm
Amplitude: 0.5 to 4 Vpp (-2 dBm to +16 dBm)
Input impedance: 50 ?, AC coupled

Timebase Output
Frequency: 10 MHz, sine
Source: 50 ?, DC transformer coupled
Amplitude: 1.75 Vpp ?10 % (8.8 ? 1 dBm)

Internal Modulation Source
Waveforms: Sine, ramp, saw, square, pulse, noise
Sine THD: -80 dBc (typical at 20 kHz)
Ramp linearity: 62.5 MHz (SG382 & SG384), fc > 93.75 MHz (SG386))
Rate resolution: 1 ?Hz
Rate error: <1: 231 + timebase error
Noise function: White Gaussian noise (rms = dev/5)
Noise bandwidth: 1 ?Hz < ENBW < 50 kHz
Pulse generator period: 1 ?s to 10 s
Pulse generator width: 100 ns to 9999.9999 ms
Pulse timing resolution: 5 ns
Pulse noise function: PRBS 25 – 219. Bit period (100 + 5N) ns

Modulation Waveform Output
Output impedance: 50 ? (for reverse termination)
User load: Unterminated 50 ? coax
AM, FM, ?M: ?1 V for ? full deviation
Pulse/Blank: “”Low”” = 0 V, “”High”” = 3.3 VDC

External Modulation Input
Modes: AM, FM, ?M, Pulse, Blank
Unmodulated level: 0 V input for unmodulated carrier
AM, FM, ?M: ?1 V input for ? full deviation
Modulation bandwidth: >100 kHz
Modulation distortion: <-60 dB
Input impedance: 100 k?
Input offset: <500 ?V
Pulse/Blank threshold: +1 VDC

Amplitude Modulation
Range: 0 to 100 % (decreases above +7 dBm output)
Resolution: 0.1 %
Modulation source: Internal or external
Modulation distortion: <1 % (fc < 62.5 MHz, fm = 1 kHz, BNC output) 62.5 MHz, fm = 1 kHz, N-type output) Modulation bandwidth: >100 kHz

Frequency Modulation
Min. freq. deviation: 0.1 Hz
Max. freq. deviation: SG382 & SG384
Smaller of fc or (64 MHz – fc), (fc < 62.5 MHz)
1 MHz (62.5 MHz < fc ? 126.5625 MHz)
2 MHz (126.5625 MHz < fc ? 253.1250)
4 MHz (253.1250 MHz < fc ? 506.25 MHz)
8 MHz (506.25 MHz < fc ? 1.0125 GHz)
16 MHz (1.0125 GHz < fc ? 2.025 GHz)
32 MHz (2.025 GHz < fc ? 4.050 GHz (SG384))
64 MHz (4.050 GHz < fc ? 8.100 GHz (Opt.02))
SG386
Smaller of fc or (96 MHz – fc), (fc < 93.75 MHz)
1 MHz, (93.75 MHz < fc ? 189.84375 MHz)
2 MHz, (189.84375 MHz < fc ? 379.6875 MHz)
4 MHz, (379.6875 MHz < fc ? 759.375 MHz)
8 MHz, (759.375 MHz < fc ? 1.51875 GHz)
16 MHz, (1.51875 GHz < fc ? 3.0375 GHz)
32 MHz, (3.0375 GHz < fc ? 6.075 GHz)
64 MHz, (6.075 GHz < fc ? 8.100 GHz (Opt.02))
Deviation resolution: 0.1 Hz
Deviation accuracy: <0.1 % (fc ? 62.5 MHz (SG382 & SG384), fc ? 93.75 MHz (SG386)) 62.5 MHz (SG382 & SG384), fc > 93.75 MHz (SG386))
Modulation source: Internal or external
Modulation distortion: <-60 dB (fc = 100 MHz, fM = 1 kHz, fD = 1 kHz) Ext FM carrier offset: 62.5 MHz (SG382 & SG384), fc > 93.75 MHz (SG386))

Frequency Sweeps (Phase Continuous)
Frequency span: 10 Hz to entire sweep range
Sweep ranges: SG382 & SG384
DC to 64 MHz
59.375 to 128.125 MHz
118.75 to 256.25 MHz
237.5 to 512.5 MHz
475 to 1025 MHz
950 to 2050 MHz
1900 to 4100 MHz (SG384)
3800 to 8200 MHz (opt. 02 only)

SG386
DC to 96 MHz
89.0625 MHz to 192.188 MHz
178.125 MHz to 384.375 MHz
356.25 MHz to 768.75 MHz
712.5 MHz to 1537.5 MHz
1425 MHz to 3075 MHz
2850 MHz to 6150 MHz
5950 MHz to 8150 MHz (w/ Opt. 02)
Deviation resolution: 0.1 Hz
Sweep source: Internal or external
Sweep distortion: <0.1 Hz + deviation/1,000
Sweep offset: <1: 1,000 of deviation
Sweep function: Triangle, ramp or sine sweeps up to 120 Hz
Phase Modulation
Deviation: 0 to 360?
Deviation resolution: 0.01? to 100 MHz, 0.1? to 1 GHz, 1? above 1 GHz
Deviation accuracy: <0.1 % (fc ? 62.5 MHz (SG382 & SG384), fc ? 93.75 MHz (SG386)) 62.5 MHz (SG382 & SG384), fc > 93.75 MHz (SG386))
Modulation source: Internal or external
Modulation distortion: 62.5 MHz (SG382 & SG384), fc > 93.75 MHz (SG386))

Pulse/Blank Modulation
Pulse mode: Logic “”high”” turns RF “”on””
Blank mode: Logic “”high”” turns RF “”off””
On/Off ratio
BNC output: 70 dB

Type-N output: 57 dB (fc < 1 GHz)
40 dB (1 GHz ? fc< 4 GHz) 35 dB (fc ? 4 GHz) Pulse feed-through: 10 % of carrier for 20 ns at turn-on (typ.) Turn on/off delay: 60 ns RF rise/fall time: 20 ns Modulation source: Internal or external pulse External I/Q Modulation (opt. 03) Carrier frequency range: 400 MHz to 2.025 GHz (SG382) 400 MHz to 4.05 GHz (SG384) 400 MHz to 6.075 GHz (SG386) Modulated output: Front-panel N-type only I/Q inputs: 50 ?, ?0.5 V I or Q input offset: 40 dBc (>35 dBc above 4 GHz)
Modulation bandwidth: 200 MHz (-3 dB)
Square Wave Clock Outputs (opt. 01)
Differential clocks: Rear-panel SMAs drive 50 ? loads
Frequency range: DC to 4.05 GHz
Transition time: 62.5 MHz): 300 fs rms (typical, 1 kHz to 5 MHz BW at 1 GHz)
(fc ? 62.5 MHz): -10 dBm to +7 dBm (7 GHz to 8.10 GHz)
+13 to +16.5 dBm (spec. not guaranteed)
Sub harmonic (fc/2): <-25 dBc (fC < 6.5 GHz)
<-12 dBc (fC < 8.1 GHz)
Mixing products (3fc/2): <-20 dBc
Harmonics (n x fc): <-25 dBc
Spurious (8 GHz): 10 kHz offset)
Phase noise (8 GHz): -98 dBc/Hz at 20 kHz offset (typ.)
Amplitude resolution: 0.01 dBm
Amplitude accuracy: ?1 dB (4.05 GHz to 6.5 GHz)
?2 dB (6.5 GHz to 8.1 GHz)
Modulation modes: FM, ?M, Sweeps
Output coupling: AC, 50 ?
Reverse protection: 30 VDC, +25 dBm RF
DC Bias Source (comes with opt. 02)
Output: Rear-panel SMA
Voltage range: ?10 V
Offset voltage: <20 mV
DC accuracy: ?0.2 %
DC resolution: 5 mV
Output resistance: 50 ?
Current limit: 20 mA
Computer Interfaces (all are standard)
Ethernet (LAN): 10/100 Base-T. TCP/IP & DHCP default
GPIB: IEEE-488.2
RS-232: 4800 to 115,200 baud, RTS/CTS flow line

General
Line power: <90 W, 90 to 264 VAC, 47 to 63 Hz with PFC
Dimensions: 8.5″” ? 3.5″” ? 13″” (WHL)
Weight: 10 lbs.
Warranty: One year parts and labor on defects in materials & workmanship

 

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