Ceyear 2498D User Manual - Page 4

Browse online or download pdf User Manual for Measuring Instruments Ceyear 2498D. Ceyear 2498D 15 pages. Optical power meter

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1 Overview
This manual applies to the 2498C/D optical power meter. The product is a hand-held instrument with a
novel structure and small size. This meter has built-in optical detecting component and rechargeable
battery, which is convenient to use and can be powered by a dry battery, and is more suitable for field
work.
It adopts high-quality high-speed photodiode as an optical detection device, which is controlled by a
single-chip microcomputer. This meter is characterized by strong functions, high reliability, high cost
performance, small size and beautiful appearance. It is suitable for construction and maintenance of
fiber optic communication objects. In addition, it is also an ideal optical power and optical loss measuring
instrument for scientific research, production, teaching and other fields. When high power testing is
required, a power meter with a measuring range of -50dBm to +26dBm is available.
The 2498C/D optical power meter has two power meter modules, and only one of them can be selected
at one time. Based on different optical source, it is divided into two types as shown in Table 1-1.
Model
Power
-70dBm～+3dBm
scope
Optical
source
1310nm±20nm & 1550nm±20nm
module
2 Product Compositions
The basic components of the 2498C/D optical power meter are shown in Table 1-2.
Table 1-2 Standard Configuration of 2498C/D Optical Power Meter
No.
1
2
3
4
3 Precautions
The 2498C/D power meter shall be reasonably used and carefully maintained, thus maintaining its
performance indicators for a long time and extending the service life. Please pay attention to the
following matters during use:
3.1 Power Adapter
Please use the special adapter provided by China Electronics Technology Instruments Co., Ltd., and
other adapters may cause damage to the optical power meter.
3.2 Internal lithium battery
1)
If the battery is placed for a long time, it is easy to enter the sleep state, resulting in lower capacity
value and shortening discharging time.
However, 2 to 3 normal charging and discharging cycles will activate the battery and restore its normal
capacity. Lithium batteries have almost no memory effect and can be charged at any time.

Chapter I Overview

Table 1-1 Model Description of 2498C/D Optical Power Meter
2498C
-50dBm～+26dBm
Name
2498C/D optical power meter
Power Adapter
User Manual
Built-in lithium battery
Chapter I Overview
-70dBm～+3dBm
2498D
-50dBm～+26dBm
NONE
Quantity
1 set
Mainframe
1 set
Accessories
1 book
Accessories
1 piece
Accessories
Remarks
1