HP 53132A Assembly And Service Manual page 236

Instrument Inputs
Channel 1 Input Specifications
Frequency Range
DC Coupled: DC to 225 MHz
1 MHz to 225 MHz (50 Ω)
AC Coupled:
30 Hz to 225 MHz (1 MΩ)
FM Tolerance: 25%
Voltage Range and Sensitivity (Sinusoid)
DC to 100 MHz: 20 mVrms to ±5 V ac + dc
(75 mVrms with optional rear connectors)
100 MHz to 200 MHz: 30 mVrms to ±5 V ac + dc
(75 mVrms with optional rear connectors)
200 MHz to 225 MHz: 40 mVrms to ±5 V ac + dc
(75 mVrms with optional rear connectors)
Voltage Range and Sensitivity (Single-Shot Pulse)
4.5 ns to 10 ns Pulse Width: 100 mVpp to 10 Vpp
(150 mVpp with optional rear connectors)
>10 ns Pulse Width: 50 mVpp to 10 Vpp
(100 mVpp with optional rear connectors)
2
Trigger Level
Range: ±5.125 V
Accuracy: ±(15 mV + 1% of trigger level)
Resolution: 5 mV
Damage Level
50 Ω: 5 Vrms
0 to 3.5 kHz, 1 MΩ: 350 V dc + ac pk
3.5 kHz to 100 kHz, 1 MΩ: 350 V dc + ac pk linearly derated to 5 Vrms
>100 kHz, 1 MΩ: 5 Vrms
1 MΩ
350 Vdc + acpk
50Ω
5 Vrms
0 Hz 3.5 KHz
1
Values shown are for X1 attenuator setting. Multiply all values by 10 (nominal) when using the X10 attenuator setting. Note that it may be
necessary to recalibrate the input offset in the application environment (especially at high temperature) to achieve maximum sensitivity.
2
When ordered with optional rear terminals, the Channel 1 input is active on both the front and rear of the counter though the specifications
provided only apply to the rear terminal. Performance for the front terminal is degraded, but may be improved by terminating the rear terminal
into 50 Ω.
Chapter 8 HP 53181A Specifications
Introduction
Introduction
The specifications of the HP 53181A Frequency Counter are provided in
this chapter.
1
1
100 KHz
8-2
Channel 1 Input Characteristics
Impedance:
1 MΩ Capacitance:
Coupling:
Low-Pass Filter:
Input Sensitivity:
2
2
2
2
2
Trigger Slope:
Auto Trigger Level
Range:
Frequency:
Input Amplitude:
Attenuator
Voltage Range:
Trigger Range:
Assembly-Level Service Guide
1 MΩ or 50 Ω
30 pF
AC or DC
100 kHz (or disabled)
–20 dB at > 1 MHz
Selectable between
Low, Medium, or High (default).
Low is approximately
2x High Sensitivity.
Positive or Negative
0 to 100% in 10% steps
> 100 Hz
> 100 mVpp
(No amplitude modulation)
x10
x10