Specifications and Characteristics 3
U2000 Series Operating and Service Guide 65
Trigger
Internal Trigger
Resolution 0.1 dB
Level accuracy ± 1 dB
Jitter ± 1 µs
External TTL Trigger Input
Impedance 50 Ω or 1 kΩ
Tri gg er low <1.1 V
Tri gg er hi gh >1.9 V
Minimum trigger pulse width 35 ns
Minimum trigger repetition period 80 ns
Tri gg er latency 11 µs ±2 µs
Trigger Delay
Range –0.15 s to +0.15 s
Resolution 1 µs
Trigger hold-off
Range 1 µs to 400 ms
Resolution 1 µs
Trigger Hysteresis
Range 0 dB to +3 dB
Resolution 0.1 dB