Applent Instruments AT520, Руководство пользователя

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Overview
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2. Overview
This chapter contains general information about AT520x .The information is organized as follows
 Introduction
 Main Specifications
 Feature overview
2.1 Introduction
Thank you for purchasing AT520x AC Milliohm meter.
The Applent AT520x completes with comparator function and external interface utilizing
the principles of the AC 4-terminal method that gives priority to line use and offers high
speed, high accuracy and high resolution. External output terminal, external control
terminal and RS-232C interface are standard features. The instrument also features an
m-Ohm and V mode that allows simultaneous measurement and comparison of battery
internal resistance and open-circuit voltage. This Meter is highly suitable for battery
inspection lines as one unit can act as both a low-resistance meter and a volt meter.
2.2 Functional Comparison
Model Resistance Range Voltage Range Accuracy
AT520 0.001m Ω -3.2k

0.0001~60.000V 0.3%
AT520SE 0.01m Ω -3.2k
 0.001~60.00V 0.5%
AT520L 0.01m Ω -32
 0.001~60.00V 0.5%
AT520M 0.01m Ω -32
 0.001~100.00V 0.5%
2.3 Main Specifications and Features
Some main specifications of the AT520x include:

Full AT520x specifications are included in Section 7.
Uses 4-terminal measurement method, AT520x is capable of accurate resistance
measurements independent of lead resistance or contact resistance generated between the
lead and the DUT.
Automatic test range or 7 manual ranges.
20mV peak voltage max (Open-circuit terminal voltage)
High-speed measurement: 20 readers per second.
Dual Display: Resistance and DC Voltage.
Trigger Mode: Internal Trig, Manual Trig, Remote Trig, and External Trig mode.
Battery measurement:
AT520x simultaneously measures resistance and DC voltage, so it is capable of making a
combined GD/NG judgment possible for internal resistance and open-circuit voltage.