User Manual

2
Specification
Input Specifications
Input A
Configurable options
Input coupling:
Input impedance:
Attenuation:
Active edge:
Low pass filter:
Trigger threshold:
AC or DC
1MΩ or 50Ω
1:1 or 5:1
Rising or falling, or width high or low
Filter In (~50kHz cut-off) or Out
Variable threshold for both DC and AC coupling
Input Impedance:
1MΩ//25pF (DC or AC coupled)
or 50Ω nominal (AC coupled only).
Frequency Range:
< 0.001Hz to >125MHz (1MΩ, DC coupled).
< 30Hz to >125MHz (1MΩ, AC coupled).
< 500kHz to > 125MHz (50Ω, AC coupled).
Trigger Threshold:
DC coupled:
AC coupled:
0 to 2V (1:1 attenuation) or 0 to 10V (5:1 attenuation).
Average ± 50mV (1:1 attenuation) or ± 250mV (5:1 attenuation).
Sensitivity: Sinewave - 15mVrms 30Hz to 100MHz, 25mV to 125MHz
at optimum threshold adjustment.
Input B
Input Impedance:
50Ω nominal (AC coupled).
Frequency Range: < 80MHz to >3GHz.
Sensitivity: 12mVrms 80MHz to 2GHz, 25mVrms to 2.5GHz, 50mVrms to 3GHz.
Maximum Input Signal: < 0dBm recommended, +13dBm (1V
rms) maximum.
Input C
Input Impedance:
50
Ω
nominal (AC coupled) in-band. 250k
Ω
at DC.
Frequency Range: < 2GHz to >6GHz (typically 1.8GHz to 7.5GHz).
Sensitivity: 25mVrms (–19dBm) 2GHz to 6GHz.
Maximum Input Signal: < +16dBm (1.5Vrms) recommended. Damage level +25dBm (4Vrms).
External Reference Input
Input Impedance:
>100k
Ω,
AC coupled.
Frequency: 10MHz.
Signal Level:
TTL, 3V
pp
to 5V
pp
CMOS or 1 to 2Vrms sinewave.
Maximum Input Voltage
Inputs A, B, C, and
External Reference:
30V
DC; 30Vrms 50/60Hz with respect to earth ground
Note that the inputs will not be damaged if subjected to an accidental short-term connection to a 50/60Hz
line voltage not exceeding 250V
rms, or 250V DC.