Stanford Research SR620
1.3GHz Time Interval Counter
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sold
fre133
Freq 0.001Hz-300MHz Prescaler 40MHz-1.3GHz
Input BNC(f) 1mohm/50ohms AC/DC Thres+-5V Slope +/- Sens >40mV(20mV type)
Time Interval, Width, Rise and Fall Times
Range –1000s - +1000s in ±TIME mode –1ns - +1000s in all others modes
Trigger rate 0 -100 MHz Display LSD 4ps single sample, 1 ps with avgREF
Period
Range 0-1000s RATIO A/B range:10E–9-10E3 Display 16-digit LSD = 1ps
Phase
Definition Phase = 360×(Tb–Ta)/Period A Range–180-+180 degrees, 0-100MHz Resolution (25ps×Freq×360+0.001)°
Counts
Range 10E12,RATIO A/B range:10E–9-10E3 Count rate 0-300 MHz Gates Display 12digits
Time base Standard
Frequency 10.000MHz TCVCXO Aging 1×10–6/yr Allan variance (1 s) 3 × 10–10 (typ.) Stability (0-50 °C) 1 ppm Settability 0.01 ppm
Output 1.00kHz Rise/fall <2ns Amp TTL:4V (2V 50 Ω)
ECL: –1.8 –0.8 V in 50 Ω
DVM Inputs Full scale ±1.999VDC /±19.99VDC
D/A Output Full scale ±10.00VDC Resolution 5 mV
Default Voltage proportional to mean and deviation
Graphics
Scope Two rear-panel outputs to drive x-y analog oscilloscope
RS232C GP-IB
AC100/120/220/240V,50/60 Hz 70 W
11 lbs., 14" × 3.5" × 14" (WHD)
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