Agilent Technologies E4438C, Техническое описание, Страница: 19 / 40

19
Clock
Sample rate 1 Hz to 100 MHz
Resolution 0.001 Hz
Accuracy Same as ti2
-42
[in non-integer applications]
Baseband filters
40 MHz used for spur reduction
2.1 MHz used for ACPR reduction
Through used for maximum bandwidth
Reconstruction filter: [fixed]
50 MHz [used for all symbol rates]
Baseband spectral purity
1
[full scale sinewave]
Harmonic distortion
100 kHz to 2 MHz (< –65 dBc)
Phase noise (< –127 dBc/Hz)
[baseband output of 10 MHz sinewave at 20 kHz offset]
IM performance (< –74 dB)
[two sinewaves at 950 kHz and 1050 kHz at baseband]
Triggers
Types Continuous, single, gated, segment advance
Source Trigger key, external, remote [LAN, GPIB, RS-232]
External polarity Negative, positive
External delay time 10 ns to 40 sec plus latency
External delay resolution 10 ns
Markers
[Markers are defined in a segment during the waveform generation process, or from the
ESG front panel. A marker can also be tied to the RF blanking feature of the ESG.]
Marker polarity Negative, positive
Number of markers 4
Multicarrier
Number of carriers Up to 100 [limited by a max bandwidth of 80 MHz
depending on symbol rate and modulation type]
Frequency offset [per carrier] –40 MHz to +40 MHz
Power offset [per carrier] 0 dB to –40 dB
Modulation
PSK BPSK, QPSK, OQPSK,
π
/4DQPSK, 8PSK,
16PSK, D8PSK
QAM 4, 16, 32, 64, 128, 256
FSK Selectable: 2, 4, 8, 16
MSK
ASK
Data Random ONLY
Multitone
Number of tones 2 to 64, with selectable on/off state per tone
Frequency spacing 100 Hz to 80 MHz
Phase [per tone] Fixed or random
Specifications for I/Q Characteristics
1. Parentheses denote typical performance.