Frequency Range |
TW4400A :250kHz~20GHzTW4400C :250kHz~44GHz |
Frequency |
N(internal YOharmonic times) |

250kHz < f < 250MHz |
1/8 |

250MHz < f < 500MHz |
1/16 |

500MHz < f < 1GHz |
1/8 |

1 GHz < f < 2 GHz |
1/4 |

2 GHz < f < 3.2GHz |
1/2 |

3.2 GHz < f < 10GHz |
1 |

10 GHz < f < 20GHz |
2 |

20 GHz < f < 28.5GHz |
3 |

28.5 GHz < f < 44GHz |
5 |

Frequency Resolution |
0.001Hz |

Time base Aging Rate(Typ1) |
5 × 10 -10 /day (after 30 days of continuous power-on ) |

Harmonic^{2} |
250kHz < f < 2GHz |
-30dBc |

2GHz < f < 20GHz |
-55dBc |

20GHz < f < 44GHz |
-40dBc |

Sub-harmonic^{2} |
250kHz < f < 10GHz |
None |

10GHz < f < 20GHz |
-50dBc |

20GHz < f < 44GHz |
-40dBc |

Non-harmonic^{3} |
250kHz < f < 3.2GHz |
-68dBc |

3.2GHz < f < 10GHz |
-62dBc |

10GHz < f < 20GHz |
-56dBc |

20 GHz < f <44GHz |
-48dBc |

SSB Phase Noise(dBc/Hz |
Freq / Freq offset |
100Hz |
1kHz |
10kHz |
100kHz |

250kHz < f < 250MHz |
-98 |
-119 |
-124 |
-124 |

250MHz < f < 500MHz |
-100 |
-123 |
-132 |
-136 |

500MHz < f < 1GHz |
-98 |
-121 |
-130 |
-130 |

1GHz < f < 2 GHz |
-92 |
-115 |
-124 |
-124 |

2GHz < f <3.2GHz |
-88 |
-111 |
-120 |
-120 |

3.2GHz < f < 10GHz |
-78 |
-101 |
-110 |
-110 |

10GHz < f <20GHz |
-72 |
-95 |
-104 |
-104 |

20GHz < f <44GHz |
-63 |
-86 |
-95 |
-95 |

Output Power Range(25+10 C) |
TW4400A:+10dBm ~ -120dBm(-130dBm selectable)
TW4400C: +7dBm ~ -110dBm |

Power Accuracy(25+10C,without modulation) |
Freq / Power |
> +10 dBm |
+10~-10dBm |
-10~-70dBm |
-70~-90dBm |

250kHz = f = 2GHz |
+0.6dB |
+0.6dB |
+0.7dB |
+0.8d |

2GHz< f =20GHz |
+0.8dB |
+0.8dB |
+0.9dB |
+1.0dB |

20GHz< f =44GHz |
+1.0dB |
+1.0dB |
+1.5dB |
+2.0dB |

Modulation Specification |
PM |
on/off ratio |
>80dB |

rise/fall time |
<20ns |

Min. pulse width(internal ALC) |
100ns |

AM |
Mod type:Linear,Exp
Mod rate(3 dB bandwidth 30% Mod depth):DC~100kHz
Max. depth:Linear 90%,Exp 20dB
Accuracy(1kHz Mod rate,Linear):
±(6%×set depth+1%)
Distortion(1kHz Mod rate,30% depth,Linear,overall harmonic distortion):<1.5% |

FM |
Max. freq offset:N×16MHz
Accuracy(1kHz rate,offset offset+20Hz)
Mod rate(3dB bandwidth,100kHz FM offset):
Internal DC:DC-100kHz;internal AC:100kHz-1MHz
External DC:DC-100kHz;external AC:100kHz-10MHz
Distortion (1kHz rate, N×800kHz offset,overall harmonic distortion):<1% |

OM |
Max. phase offset:Mod bandwidth100kHz N×160rad
Accuracy(1kHz rate,Mod bandwidth100kHz):<± (5%×set
Phase offset+0.01 rad)
Mod rate(3dB bandwidth):
Mod bandwidth100kHz:DC-100kHz;Mod bandwidth 1MHz:100kHz -1MHz(Type)
Distortion(1kHz rate,, N×80rad phase offset,overall harmonic distortion,Mod bandwidth100kHz):<1% |

Vector Modulation |
EVM(%RMS) |
<2.5% (Type)
(symbol rate 4Msps,Nyquist filter,a=0.3,QPSK format,carrier 900MHz,1.8GHz
2.4GHz,38GHz) |

Origin Deviation |
<-40dBc (Type)
(symbol rate 4Msps,Nyquist filter,a=0.3,QPSK format,carrier 900MHz,1.8GHz,
2.4GHz,38GHz) |

Internal ModBandwidth |
80MHz(±3dB bandwidth)(carrier 900MHz,1.8GHz,2.4GHz,38GHz) |

External ModBandwidth |
160MHz(±5dB bandwidth)(carrier 900MHz,1.8GHz,2.4GHz,38GHz) |

External Broadband Mod |
500MHz(±6dB bandwidth) (carrier 4GHz,12GHz,28GHz,38GHz) |

Internal Baseband Signal Generator |
Chan Number |
2 (I and Q) |

Max. symbol rate |
50Msps(Max.4 bit/code) |

Baseband Waveform Memory |
64M sample points(MSa/chan) |

Mod format |
PSK:BPSK,QPSK,OQPSK,p/4DQPSK,8PSK, D8PSK,16PSK QAM:4,16,32,64,128,256,512 FSK:2,4,8,16 ASK,MSK,arbitrary wave modulation |

Dual tone Max. freq Interval |
80MHz |

EVM(%RMS) |
<1.5% (Type)(symbol rate 4Msps,Nyquist filter,a=0.3,QPSK format) |

RF Output Port |
TW4400A |
TW4400C |

3.5mm(M) |
2.4mm(M) |

Display |
TFT-LCD |

Operation Interface |
English |

Dimensions(W×H×D) |
455mm×195mm×545mm(with handle and toe pad)
426mm×177mm×460mm(without handle and toe pad) |

Max. Weight |
about 30kg |

Operation Temp |
+10C~+40 C |