Anritsu MP8931A - Page 150

Appendix A Specifications
A-8.
(5) External clock input
Item Specifications
Level
<ECL> High: 0 to
−
1.0 V, Low:
−
1.5 to
−
2.5 V
<TTL> High: +1.8 to +5.0 V, Low: 0 to +1.0 V
Terminal voltage conditions
ECL:
−
2 V, TTL: GND
Threshold voltage conditions
ECL:
−
1.3 V, TTL: +1.4 V
Termination
75
Ω
/1 M
Ω
Frequency
1 kHz to 155 MHz (ECL), 1 kHz to 100 MHz (TTL)
Accuracy:
±
100 ppm
Duty
50%
±
10%
Pulse width
3 ns or more