U1084A Datasheet, PDF (10/20 Pages) Keysight Technologies – Acqiris High-Speed PCIe Digitizers with On-Board Signal Processing

Firmware for High-Speed Digitizers
U1084A-DGT with long acquisition memory
U1084A-DGS with simultaneous acquisition and readout
Running on U1084A card
Digital conversion
Sample rate
4 GS/s (-001 only), 2 GS/s (-001 and
-002 only), 1 GS/s, 500 MS/s, 250 MS/s,
125 MS/s, 62.5 MS/s, 31.25 MS/s,
15.6 MS/s, 7.8 MS/s, 3.9 MS/s,
1.95 MS/s, 977 kS/s, 488 kS/s
Optional memory
-DGT:
-STD: 512 MS or 256 MS/channel
-256: 256 MS or 128 MS/channel
-128: 128 MS or 64 MS/channel
-DGS:
-STD: 256 MS or 128 MS/channel
-256: 128 MS or 64 MS/channel
-128: 64 MS or 32 MS/channel
Time base
Clock accuracy
Better than ± 2 ppm
Sampling jitter
< 1 ps rms for 10 μs record length
with internal clock and reference
(measured)
Acquisition modes
Single shot
Sequence: 1 to 64 Ksegments
Dead time: < 1.8 μs (measured)
Effective bits (at maximum dual
channel sampling rate, 500 mV FSR
and full bandwidth)
> 6.5 at 10 MHz
> 6.2 at 100 MHz
> 5.9 at 410 MHz
> 4.9 at 910 MHz
Trigger (channel and external)
Channel trigger
Threshold adjust range: FS of channel
Sensitivity, DC to 1.5 GHz: > 15% FS
(measured)
Pretrigger
Adjustable to 100% of horizontal full
scale
External trigger input
MCX, gold-plated
Impedance: 50 Ω / 1 MΩ ± 2%
Sensitivity (measured):
50 Ω, DC to 1 GHz: > 0.5 V
1 MΩ, DC to 250 MHz: > 0.5 V
Maximum input voltage: ± 5 V DC
Coupling
DC, AC, HF reject (50 kHz cutoff)
(measured)
Modes
Edge (positive and negative)
Window¹, HF divide by 4¹, spike
stretcher¹, dual-source pattern²
(OR, AND, NOR, NAND)
Trigger output (TR OUT)
Offset: ± 2.5 V (no load) (typ)
Amplitude: ± 0.8 V (no load),
± 15 mA max (measured)
Rise/fall time: 2.5 ns into 50 Ω
(measured)
Coupling: DC
Output impedance: 50 Ω
1) Channel trigger only.
2) Between either one of the input channels and the external
trigger.
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