Hardware¶
Output Channels¶
The Pulse Streamer 8/2 has 8 digital and 2 analog output channels. The electrical characteristics are tabulated below.
Digital Output¶
Property |
Value |
|---|---|
Output into 50 Ω |
0 to 2.6 V |
Sampling rate |
1 GHz |
Rise/fall time (typ.) |
370/290 ps |
Minimum pulse width |
2 ns |
RMS jitter |
< 50 ps |
Property |
Value |
|---|---|
Output into 50 Ω |
0 to 3 V |
Sampling rate |
1 GHz |
Rise/fall time (typ.) |
1.6/1.1 ns |
Minimum pulse width |
3 ns |
RMS jitter |
< 50 ps |
Analog Output¶
Property |
Value |
|---|---|
Output into 50 Ω |
-1.0 to 1.0 V |
Resolution |
14 bit |
Accuracy 1 (error/gain) |
< 2 mV / < 1% |
Crosstalk (analog) |
< -45 dB |
Crosstalk (digital) |
< -55 dB |
Sampling rate |
125 MHz |
Rise/fall time |
8.8/9.6 ns |
Bandwidth |
50 MHz (-3db) |
Note
- 1
Accuracy is specified with 50 Ohm load.
Warning
Around 20s after power-cycling, the analog outputs have a short pulse (duration ~30ns) with the voltage level of -0.5V.
Property |
Value |
|---|---|
Output into 50 Ω 2 |
-1.0 to 1.0 V |
Resolution |
14 bit |
Accuracy 3 |
±5 mV |
Crosstalk (analog) |
< -45 dB |
Crosstalk (digital) |
< -55 dB |
Sampling rate |
125 MHz |
Rise/fall time |
8.8/9.6 ns |
Bandwidth (-3db) |
50 MHz |
Note
- 2
Some devices may have the actual full range smaller by up to 30 mV.
- 3
Accuracy is specified with 50 Ohm load. Pulse Streamer 8/2 shipped with firmware version v1.3.0 or later include calibration data for the analog outputs. Devices with previous firmware versions require calibration to achieve the specified accuracy. You can do the calibration yourself. Please follow the instructions in the Calibrating the analog outputs section.
Warning
During power-up, the analog outputs have an undefined output voltage value in the range of -1V to 1V.
Trigger Input¶
The Pulse Streamer 8/2 has one external trigger input, which can be enabled by software. By default, the Pulse Streamer is automatically rearmed after a sequence with a finite number of n_runs has finished. That means if another trigger occurs after a sequence has finished, the sequence will be retriggered again. On the contrary, if a trigger occurs while a sequence is streamed, it will be discarded. We recommend not exceeding 1 kHz as an external retrigger frequency. Information about how to configure the trigger functionality of the Pulse Streamer can be found in the Running pulse sequences section
Electrical characteristics:
Property |
Value |
|---|---|
Termination |
50 Ω |
Input voltage range |
0 to 5 V |
Trigger level |
0.5 V |
Minimum pulse width |
5 ns |
TriggerToData (typical) |
65 ns |
TriggerToData (Rms jitter) |
2.3 ns |
Property |
Value |
|---|---|
Termination |
50 Ω |
Input voltage range |
0 to 3.3 V |
Low-level range |
0 to 0.8 V |
High-level range |
2.0 to 3.3 V |
Minimum pulse width |
< 2ns |
TriggerToData (typical) |
60 ns |
TriggerToData (Rms jitter) |
2.3 ns |
External Clock Input¶
The Pulse Streamer 8/2 has one input that can receive an external 125MHz or 10 MHz reference clock. Further information about how to set the clock source of the Pulse Streamer can be found in the Using an external clock section.
Electrical characteristics:
Property |
Value |
|---|---|
Termination |
50 Ω |
Coupling |
AC coupled |
Amplitude range |
0.2 - 5 Vpp |
Accepted frequencies |
10 or 125 MHz |
Property |
Value |
|---|---|
Termination |
50 Ω |
Input voltage range |
0 to 3.3 V |
Low-level range |
0 to 0.8 V |
High-level range |
2.0 to 3.3 V |
Accepted frequencies |
10 or 125 MHz |
Warning
Due to hardware limitations, there is a 100mV ripple on the digital outputs if an external clock source is connected to the Pulse Streamer 8/2. The analog channels are not affected.
Property |
Value |
|---|---|
Termination |
50 Ω |
Input voltage range |
0 to 3.3 V |
Low-level range |
0 to 0.8 V |
High-level range |
2.0 to 3.3 V |
Accepted frequencies |
10 or 125 MHz |
Warning
Due to hardware limitations, there is a 100mV ripple on the digital outputs if an external clock source is connected to the Pulse Streamer 8/2. The anlog channels are not affected.
Note
These hardware revisions of the Pulse Streamer 8/2 have ambiguous input port labels. The correct input port for the external clock is the second one on the left side labeled with *GP In* or *SlowDigital 1*.
Status LEDs¶
The Pulse Streamer 8/2 has two LEDs showing information about the status of the device and the network connection.
Device status LED:
green |
Pulse Streamer successfully booted |
blinking green-orange |
sequence is streaming |
orange |
waiting for trigger/retrigger |
blue |
sequence finished - retrigger disabled |
blinking blue |
no valid license |
continuous red |
error |
Network LED:
red |
no configuration/connection |
blinking green-red |
setting DHCP - no connection |
green |
setting DHCP - connection found |
blinking blue-red |
setting static IP - no connection |
blue |
setting static IP - connection found |