| External I/Q Modulation |
| Carrier frequency range |
| SG392 |
400 MHz to 2.025 GHz |
| SG394 |
400 MHz to 4.05 GHz |
| SG396 |
400 MHz to 6.075 GHz |
| I/Q inputs |
50 Ω, ±0.5 V (rear panel) |
| I/Q full scale input |
√(I2 + Q2) = 0.5 V |
| Modulation bandwidth |
300 MHz RF bandwidth |
| I or Q input offset |
<500 µV |
| Carrier suppression |
>40 dBc (>35 dBc above 4 GHz)
|
| Dual Baseband Generator (for Vector I/Q Modulation) |
| Channels |
2 (I and Q) |
| DAC data format |
Dual 14-bit at 125 MS/s |
| Reconstruction filter |
10 MHz, 3rd order Bessel LPF |
| Arb symbol memory |
Up to 16 Mbits |
| Symbol rate |
1 Hz to 6 MHz (1 µHz resolution) |
| Symbol length |
1 to 9 bits (maps to constellation) |
| Symbol mapping |
Default or user-defined constellation |
| Symbol source |
User-defined symbols, built-in PRBS generator, or settable pattern generator |
| PRBS length |
2n - 1 (5<n<32) |
| Pattern generator |
16 bits |
| Digital filtering |
| Filter type |
Nyquist, Root Nyquist, Gaussian, Rectangular, Linear, Sinc, User FIR |
| Filter length |
24 symbols |
| Noise impairments |
| Additive noise |
White, Gaussian |
| Level |
-70 dBc to -10 dBc (band limited by digital filter) |
| Vector Modulation |
| Modulation type |
PSK, QAM, FSK, CPM, MSK, ASK, VSB |
| PSK derivatives |
PSK, BPSK, QPSK, OQPSK, DQPSK, π/4DQPSK, 8 PSK, 16 PSK, 3π/8 8 PSK |
| QAM derivatives |
4, 16, 32, 64, 256 |
| FSK derivatives |
1-bit to 4-bit with deviations from 0 to 6 MHz |
| ASK derivatives |
1-bit to 4-bit |
| CMP derivatives |
1-bit to 4-bit with modulation indices from 0 to 1.0 |
| VSB derivatives |
8 and 16 (at rates to 12 MS/s) |
| Preset modes |
GSM, GSM-EDGE, W-CDMA, APCO-25, DECT, NADC, PDC, TETRA, ATSC DTV, audio clip |