Model 745T-20C
Twenty (20) Channel Digital Delay Generator
The Model 745T-20C Digital Delay Generator provides users with an amazing twenty independent channels of pulse delay and width. This multi-channel Digital Delay Generator provides delay resolution of 100 picoseconds (ps) with an optional 1 picosecond (ps) resolution. The jitter is less than 25 ps with internal or external triggers.
OVERVIEW
Quick Specs
Applications
Channels: 20 Independent Channels
Resolution: 100 ps (standard)
Accuracy: < 250 ps + delay x 10-7
Jitter: 25 ps (T0 to any output)
Voltage: 2 to 5 V, step < 0.1 V / 50 Ω
Memory: 4 Sets of Parameters
Large Area Timing
Multiple Outputs
Explosive Testing
Precision Laser and Camera Timing
High Precision Pulse/Gate Application
The Model 745T-20C delivers up to 6 V into 50 Ω, meeting all TTL applications. The levels are adjustable on a channel-by-channel basis giving you complete time and amplitude domain control. The fast outputs, with risetimes of 1 ns, are on the rear panel for an elegant look for complex experiments. The front panel controls are accessed by a touchscreen interface with several programming options (Ethernet, etc) for remote control.
All parameters (delay/amplitude/width/trigger) may also be controlled with an embedded GUI that opens in an HTML browser such as Internet Explorer, Firefox, or Chrome at 10 or 100 Mb/s rates.
The Model 745T-20C is uniquely suited to gate, delay, pulse and synchronize many experiments in the nanosecond and picosecond domain. The space saving, reduced calibration costs, and simple control of so many channels are ideal for users of multiple channels of timing.
TRIGGERING
The Model 745T-20C Digital Delay Generator offers users several options for triggering timing channels: External, Internal and Remote. Externally trigger on the positive slope. The internal rep rate generator may be started by front panel pushbutton or remotely via your software interface. Either trigger mode may be set in one-shot or repetitive.
EXPAND TO 40 OR 60 CHANNELS
The Model 745T-20C can be expanded to provide up to 60 channels, all with the same high performance. *Note: external triggering is not available for 40 / 60 channels.
SPECIFICATIONS
DELAYS
Number of Channels
20 independent delay outputs
Range
0 to 10 s
Resolution
100 ps (standard)
1ps (option 4)
RMS Jitter
25 ps (T0 to any output)
Accuracy
< 250 ps + delay x 10-7
Time Base
0.05 ppm stability
TRIGGER SOURCE
Internal
3 generators 0.1 Hz to 10 kHz in 1-2-5 sequence
External
Rate up to 50 kHz, 1 V/50 Ω Threshold, slope positive; 5 ns minimum pulse width
Command
2 Single Shots
OUTPUTS T1 TO T20
Amplitude
Adjustable 3 V to 6 V into 50 Ω
Rise/Fall time
5 ns/ 5 ns
Width
100 ns to 300 ms
Polarity
Active Low / Active High
Connector
BNC
Clock Input (1)
10 MHz to 100 MHz (customer choice fixed input)
GENERAL
Interface Control
Front panel, Ethernet / Internet (web page or SCPI)
Software
Free Drivers
Dimension
WeightRack 19" 2U 19"W x 3.5"H x 12"D [48.25mm x 8.9mm x 30mm] *with mounting ears
22 lbs [10kg]Power
Autovolt 90 to 220 Vac / 0.5 Amp
OPTIONS
Option 1
Output 10V (2) Amplitude = 2.5V to 10V, rise/fall time = 1ns/3ns into 50 Ω, width = 100ns to 10ms
Option 2
Output 20V (2) Amplitude = 5V to 20V, rise/fall time = 3ns/15ns into 50 Ω, width = 0.1us to 10us
Option 3
Output 32V (2) Amplitude = 32V Fixed, rise/fall time = <3ns/ <15ns into 50 Ω, width = 1us Fixed
Option 4
1ps Delay Resolution [<10ps RMS Jitter from T0 to Ch 1 to 10 and < 20ps Jitter from T0 to Ch 11 to 20
Option 5
Optical Output [850 nm with ST Connector]
Option 6
Clock Input and Output Frequency 10 MHz to 100 MHz
Option 7
40 Channels -- Two 754T-20 Synchronized and fine tuned at factory
Example How to Configure
Step 1: Choose Resolution
100ps or 1ps
Step 2: Choose Clock Frequency
10MHz or 100MHz or custom*
Step 3: Choose Output Frequencies
*dependent on Clock Frequency
Step 4: Choose Output Pulse Amplitude
TTL (Standard)
2.5 V to 10 V, Square
5 V to 20 V
32 V (4 Channel Max)
描述 [描述] 20个独立的脉冲延迟和宽度通道