Instructions

Trigger frequency feadout typically stabilizes at 50% more signal than generates a
stable visual display.
Sensitivity, Edge-Type trigger,
not-DC coupled, typical
Trigger coupling Typical sensitivity
AC coupled
Same as DC coupled limits for frequencies 50 Hz and
above
Noise rej Effective in Sample or Average Mode, > 10 mV/div to 5
V/div. Reduces DC coupled trigger sensitivity by 2X.
HF rej Same as DC coupled limits from DC to 7 kHz.
LF rej
Same as DC coupled limits for frequencies above 300
kHz.
Lowest frequency for successful
operation of "Set Level to 50%"
function, typical.
This is the typical lowest frequency for which the “Set Level to 50%” function will
successfully determine the 50% point of the trigger signal.
50 Hz.
Trigger level ranges, typical Input Channels: +/-4.90 divisions from center screen
Aux In: +/-6.25 V, 1X probe attenuation, +/- 12.50 V, 10X probe attenuation
Trigger signal frequency readout Provides a frequency readout of the trigger source
Trigger frequency counter
accuracy
±25 x 10-6 including all reference errors and +/-1 count errors
Trigger frequency counter
frequency range
12 Hz minimum to rated bandwidth
Trigger frequency counter
resolution
3 digits
Trigger frequency counter signal
source
Edge selected trigger source only
Trigger level accuracy, DC
coupled, typical
This is the amount of deviation allowed between the level on the waveform at which
triggering occurs and the level selected for DC-coupled triggering signals. A sine
wave with 20 ns rise time corresponds to about 18 MHz.
±0.2 div for signals within ±4 divisions from the center screen, having rise and fall
times of ≥ 20 ns.
Aux In: ±(6% of setting + 40 mV) for signals less than ±800 mV
Pulse-Width trigger
Pulse-Type trigger,
minimum pulse, rearm
time, minimum transition
time
Minimum pulse width: 2ns
Minimum re-arm time: 2ns
Time range for pulse width 2 ns to 8 s
Table continued…
Specifications
TBS1000 Series Oscilloscopes Series Digital Storage Oscilloscope Technical Reference 8