Chapter 7 HP 53131A/132A Specifications

Introduction

Introduction

The specifications of the HP 53131A/132A Universal Counter are provided in this chapter.

7

Instrument Inputs

Channel 1 & 2 Input Specifications1

Frequency Range

 

DC Coupled:

DC to 225 MHz

AC Coupled:

1 MHz to 225 MHz (50 Ω)

 

30 Hz to 225 MHz (1 MΩ)

FM Tolerance:

25%

Voltage Range and Sensitivity (Sinusoid)2

DC to 100 MHz:

20 mVrms to ±5 V ac + dc

 

(75 mVrms with optional rear connectors)3

100 MHz to 200 MHz:

30 mVrms to ±5 V ac + dc

 

(75 mVrms with optional rear connectors)3

200 MHz to 225 MHz:

40 mVrms to ±5 V ac + dc

 

(75 mVrms with optional rear connectors)3

Voltage Range and Sensitivity (Single-Shot Pulse)2

4.5 ns to 10 ns Pulse Width:

100 mVpp to 10 Vpp

 

(150 mVpp with optional rear connectors)3

>10 ns Pulse Width: 50 mVpp to 10 Vpp

Trigger Level2

(100 mVpp with optional rear connectors)3

 

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

3.5kHz to 100 kHz, 1 MΩ: 350 V dc + ac pk linearly derated to 5 Vrms >100 kHz, 1 MΩ: 5 Vrms

350 Vdc + acpk

1 MΩ

 

5 Vrms

50Ω

 

 

 

0 Hz 3.5 KHz

100 KHz

Channel 1 & 2 Input Characteristics1

Impedance:

1 MΩ or 50 Ω

1 MΩ Capacitance:

30 pF

Coupling:

AC or DC

Low-Pass Filter:

100 kHz (or disabled)

 

–20 dB at > 1 MHz

Input Sensitivity:

Selectable between

 

Low, Medium, or High (default).

 

Low is approximately

 

2x High Sensitivity.

Trigger Slope:

Positive or Negative

Auto Trigger Level

 

Range:

0 to 100% in 10% steps

Frequency:

> 100 Hz

Input Amplitude:

> 100 mVpp

 

(No amplitude modulation)

Attenuator

 

Voltage Range:

x10

Trigger Range:

x10

1Specifications and Characteristics for Channels 1 and 2 are identical for both Common and Separate configurations.

2Values 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.

3When ordered with optional rear terminals, the Channel 1 and 2 inputs are active on both the front and rear of the universal counter though the

specifications provided only apply to the rear terminals. Performance for the front terminals is degraded, but may be improved by terminating the rear terminals into 50 Ω.

7-2

Assembly-Level Service Guide