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 |
CONNECTORS | Ch 0-4, GATE, CLOCK: SMB RJ45 Ethernet Micro/AB for USB control 2.5 mm barrel for power, center positive |
LED INDICATORS | Green POWER Blue TRIGGER Orange COMM |
PACKAGING | Extruded anodized aluminum enclosure |
T680-1: 5-channel ethernet time interval counter