Atec Agilent-81150A-81160A - Manual (Page 22)

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Clock Reference
External reference output
81150A 81160A
Frequency
Accuracy
Stability
Aging 10 MHz typ.
± 50 ppm
± 2 ppm, 0 to 50 ºC
± 1 ppm per year 10 MHz spec.
± 10 ppm
± 2 ppm, 0 to 55 °C
± 1 ppm per year
Output level 1 V nom. 1 V nom.
Impedance 50 Ω nom., AC coupled 50 Ω nom., AC coupled
Connector BNC, rear panel BNC, rear panel
External reference input
81150A 81160A
Lock range 10 MHz ± 500 ppm 10 MHz ± 500 ppm typ.
Input level 200 mV
pp
to 5 V
pp
200 mV
PP
to 5 V
PP
typ.
Impedance 1 kΩ nom., AC coupled 1 kΩ nom., AC coupled
Connector BNC, rear panel BNC, rear panel
Internal frequency characteristics
81150A 81160A
Accuracy ± 50 ppm ±10 ppm
Stabilty ± 2 ppm, 0 to 50 ºC ± 2 ppm, 0 to 55 ºC
Aging ± 1 ppm per year ± 1 ppm per year
External Input A common external input is provided for both channels on the front panel. The external
input is used for external trigger or external gate modes.
81150A 81160A
Frequency range DC to 120 MHz DC to 330 MHz
Input range -10 V to +10 V - 5 V to + 5 V
Maximum input amplitude 10 V
PP
10 V
PP
Input sensitivity 200 mV
PP
Hysteresis low: 200 mV
PP
Hysteresis high: 350 mV
PP
Threshold
Range
Resolution
-10 V to 10 V
100 mV - 5 V to + 5 V
100 mV
Impedance Selectable 10 kΩ /50 Ω, DC coupled Selectable, 1 kΩ/ 50 Ω, DC coupled
Slope Selectable, rising/falling/both Selectable, rising/falling/both
Pulse width > 3.3 ns > 1.3 ns
Transition time < 100 ns
Connector BNC, front panel BNC, front panel
Frequency counter The frequency applied to external input is measured
Gate time, up to 330 MHz — 1 s, fi x
Accuracy — See clock reference specifi cations