Data Sheet

Pulse Modulation (Option DSG800-PUM
)
Modulation source External, internal
On/off ratio 100 kHz ≤ f < 3.6 GHz > 70 dB
Rise/fall time (10%/90%) < 50 ns
Pulse repetition frequency DC to 1 MHz
Pulse Generator (Option DSG800-PUM)
Pulse mode Single pulse, pulse train (option DSG800-PUG)
Pulse period
Setting range 40 ns to 170 s
Resolution 10 ns
Pulse width
Setting range 10 ns to (170 s - 10 ns)
Resolution 10 ns
Trigger delay
Setting range 10 ns to 170 s
Resolution 10 ns
Trigger mode Auto, external trigger, external gate, key, bus (USB, LAN)
Pulse Train Generator (Option DSG800-PUG)
Pulse train generator
Number of pulse patterns 1 to 2047
On/off time range 20 ns to 170 s
Number of repetitions per pattern 1 to 256
I/Q Modulation (only available for DSG821A and DSG836A)
Carrier frequency range
DSG821A 50 MHz ≤ f ≤ 2.1 GHz
DSG836A 50 MHz ≤ f ≤ 3.6 GHz
Modulation source External, internal
Bandwidth (RF)
External modulation
Baseband (I or Q) ≤ 60 MHz (nom.)
RF (I + Q) ≤ 120 MHz (nom.)
Internal modulation
Baseband (I or Q) ≤ 30 MHz (nom.)
RF (I + Q) ≤ 60 MHz (nom.)
Carrier suppression
[5]
≥ 40 dBc (typ.)
Image sideband suppression
[5,6]
≥ 40 dBc (typ.)
External I/Q input
VSWR < 1.5
Full range input
Vrms.QI 50
22
=+
Internal modulation
EVM
[5]
16QAM, root cosine lter (α = 0.22), 4 MSps,
output level ≤ +4 dBm
≤ 2%rms (typ.)
QPSK, root cosine lter (α = 0.22), 4 MSps,
output level ≤ +4 dBm
≤ 2%rms (typ.)
External modulation
EVM
[5]
CDMA2000/1xEV-D0, 1.2288 Mcps, frequency:
800 to 900 MHz, 1800 to 1900 MHz, output level
≤ +4 dBm
≤ 2%rms (typ.)
ACPR ≥ 70 dB