T680 5-channel ethernet time interval counter

Time Interval Counter - T680
  • Five-channel time-interval counter and time stamper
  • Five channels usable as TIC start plus four stops, or five time stampers
  • 12.2 picoseconds resolution with 48-bit (3236 second) range
  • Common GATE input
  • 1023 sample FIFO per channel
  • External universal power supply or 12-volt DC power
  • 100 Mbit Ethernet and USB interfaces
  • Compact extruded enclosure with optional mounting flange
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The T680 contains five wide-range time stampers. Each channel can snapshot the time of the rising edge of one electrical input, to 12.2 picosecond resolution with 48 bit range. In time-stamp mode, individual time stamps may be read. In TIC mode, channel 0 may be used as the "start" time reference for channels 1-4, with the option to acquire times after or before/after the start event.

Custom versions can include DRAM and perform internal histogramming or accumulate array data for applications like fluorescent decay and 2D delay line imaging.

FUNCTION 5-channel time interval counter/time stamper
TRIGGER INPUTS Rising-edge trigger, 50 Ω input impedance, DC coupled
Threshold is programmable from -2.5 to +2.5 volts
Max safe input is ± 3.3 volts
TIME RESOLUTION 12.207031 ps LSB (12.5ns/1024)
48 bit range, 3435.97 seconds
DEAD TIME 100 ns max
GATE INPUT 50 ohms, 2 volt minimum, active high
CLOCK Internal 10 MHz, available as TTL output
Lockable to external 10 MHz ±10 PPM reference, 1 volt p-p min
JITTER < 50 ps typical, < 75 ps max RMS for time intervals below 1 ms
< 10 ns/second for longer measurements using internal clock
RELATIVE CHANNEL ACCURACY < 100 ps channel to channel
CONTROL 10/100 Ethernet and USB
POWER +12 volts at 500 mA nom
Highland model J12 power supply furnished
RJ45 Ethernet
Micro/AB for USB control
2.5 mm barrel for power, center positive
PACKAGING Extruded anodized aluminum enclosure

PDF Block Diagram: T680 ethernet time interval counter

PDF Datasheet: T680 ethernet time interval counter

PDF Manual: T680 ethernet time interval counter

T680-1: 5-channel ethernet time interval counter

J12: 12 volt power supply

J53-1: 3′ SMB to BNC cable

T567: mounting flange