Graytechnos MiNi 211B User manual

Optical Power Meter
MODEL
211B/212B/213B
Instruction Manual
取扱説明書
HR1323-13J-04/141117
Made in Japan

Index
【 CAUTION 】 .......................................................................................... 1
1. Characteristics ................................................................................... 2
2. Configuration ...................................................................................... 2
3. Operation instruction ......................................................................... 3
3-1 Descriptions ................................................................................ 3
3-2 Operation ..................................................................................... 4
3-3 Battery replacement ................................................................... 5
3-4 Cleaning of the sensor ............................................................... 6
4. Specifications ..................................................................................... 6
4-1 Sensor .......................................................................................... 6
4-2 General ......................................................................................... 7
5. Option .................................................................................................. 7
6. After-sales service information ........................................................ 8
目次
【 取扱上の注意 】..................................................................................... 9
1. 特長.................................................................................................... 10
2. 構成.................................................................................................... 10
3. 操作方法 ............................................................................................ 11
3-1各部の説明 ................................................................................... 11
3-2使用方法 ....................................................................................... 12
3-3電池の交換 ................................................................................... 13
3-4センサ部の清掃 ............................................................................. 14
4. 規格.................................................................................................... 14
4-1 オプトパワーメータ仕様 ................................................................ 14
4-2 一般仕様 ..................................................................................... 15
5. オプション ........................................................................................... 16
6．アフターサービス ................................................................................. 16

- -
1
【 CAUTION 】
(1). The surface of the sensor built in the input port should be kept
away from dust or other impurities, in particular, be careful
removing and fitting connectors or adapters.
(2). Before use, clean the Sensor-port with canned air or a new
cotton swab according to "3-4. Cleaning of the sensor".
(3). Do not insert anything other than the optical fiber connector into
the connector adapter.
(4). Use a standard optical fiber connector. When using a
nonstandard optical fiber connector or a bare fiber adapter,
connect a optical patch code to the connector adapter or limit the
protruding length of the optical fiber ferrule to 0.5 mm. When
using a standard optical fiber connector, the length is less than
0.5 mm. The protruding length is defined as below.
(5). When using a bare fiber adapter, insert the fiber such that it
does not protrude out of the ferrule end-face.
(6). Do not input optical power greatly beyond the max. measuring
range, or the photo diode will be damaged.
(7). Excessive ambient noise may affect the normal operation. In that
case, first turn the unit off and then turn it on. Nevertheless in
case of not removing, take the battery off and put in again, then
turn the power “ON” pushing and holding down the “” select
button together.
(8). Do not drop or swing the instrument with the strap.
Figure showing the connection of an optical fiber connector to a connector adapter
Protruding length is the length of the optical
fiber ferrule protruding out of the connector
adapter.
Optical fiber connector
Connector adapter
Optical fiber ferrule
▼
▲

- -
2
1. Characteristics
(1). Model 211B/212B/213B lightweight pocket type MiNi optical power meter
is designed to measure optical power and attenuation in fiber optics
communication.
(2). Model 211B is calibrated at 850, 1310, 1490 and 1550nm. Model 212B is
calibrated at 1310, 1490, 1550 and 1650nm. Model 213B is calibrated at
1310, 1490, 1550 and 1625nm.
(3). Model 211B/212B/213B can be connected to various kinds of connectors
by using the appropriate connector adapters.
(4). A memory back up function stores selected wavelength and reference
value even when the unit is turned off.
(5). Auto power off function. (10 minutes)
(6). Small and well-designed cover protects input port and operation buttons,
suitable for carrying in a pocket or toolbox.
(7). Model 211B/212B-1/213B-1 has a “Relative value measurement (dB,
REL)” function.
2. Configuration
This series power meter consists of the main body and the built in sensor,
and connector adapters accommodating various fiber connectors.
CAUTION
The old 180-ST adapter may damage the sensor.
Please use the new 180-ST adapter instead.
Please be careful when inserting fiber connectors in the 180-UA
adapter. Forceful insertion may damage the sensor.
Old 180-ST New 180-ST
FC
connector
Optical sensor
Adapter
FC
SC
connector
ST
connector
Adapter
SC
Adapter
ST

- -
3
3. Operation instruction
3-1 Descriptions
① Power Switch ON /OFF
ON : Press this button “ON”, the unit is to operate.
The auto-power-off function works in this position.
To turn this function off, press the button for three
seconds, then [AUTO-OFF] disappears on the
LCD.
OFF : Push this button in the condition of power
“ON”, the power is “OFF”.
② ” “
This button is used to select the wavelength. The selected wavelength is
indicated ▼ on the LCD.
Hold this button down for more than one second to switch to the Relative
(REL) measurement mode. Refer to “3-2 (7). Relative measurement”.
(Model 211B/212B-1/213B-1)
Holding this button down when the power turned on will initialize the
memory. If the input port is blinded completely, the automatic offset
compensation will be accomplished. Refer to “3-2 (8). Automatic offset
compensation”. (Model 211B/212B-1/213B-1)
③ Sensor port
This port is used to input optical power from fiber optics. Attach
interchangeable adapters here. A variety of connector types can be
accommodated. The performance and accuracy decrease remarkably
due to dust or dirt. Clean the sensor before use. Refer to “3-4. Cleaning
of the sensor”.
CAUTION
Don’t input optical power greatly beyond the maximum measuring
range, or the photo diode will be damaged.
④ LCD display
LCD display indicates measuring data and status.
⑤ Battery compartment
Install battery here.
①
②
③
④
⑥
⑤
Wavelength
Low battery
Auto power off
Relative
*
1
*1 Model 211B/212B-1/213B-1

- -
4
⑥ Strap hole
The strap is to be put on here.
⑦ Cover
The Cover protects the sensor port, operation buttons and the LCD
display area when the unit is not in use.
3-2 Operation
(1). Battery
Slide the battery cover off as indicated. Insert or
replace one AA battery as indicated by the polarity
marks in the battery compartment.
(2). Cover
Slide the cover off, turn over, and insert the unit from the opposite
direction.
(3). Power
Turn the power on by pressing the “ON/OFF” button.
The unit starts to measure after ” “ indicator flashing five times.
(4). ”“ Selection
Press the ” “ select button to move the indicator to the each
wavelength on the LCD.
(5). Connector adapter
Tightly attach a connector adapter to the fiber connector.
(6). Measurement
To get accurate measurement, do not allow
ambient light to enter the sensor and
maintain the fiber in the same physical
configuration during measurement as well as
tighten the connectors securely.
Always keep dust or dirt away from the
sensor. (Refer to "3-4. Cleaning of the
sensor". )
Rear side
Battery Cover
AA Battery
Optical Connector
Connector adapter
Insert oppositely
⑦ Cover Remove the cover
To operate, turn the cover over and
insert the unit with face showing.

- -
5
Bor
d
Blind Cap
180-C
During the measurement, if the optical power input is out of the
measurement range, over(Hi-dBm) / under(Lo-dBm) range indicators
will appear in the display.
(7). Relative measurement (Model 211B/212B-1/213B-1)
To set the current input power as the reference value, hold down the
“(REL)” button for more than one second. The difference between the
reference value and subsequent power input is expressed in dB. These
measurements are called “relative values” and can be read directly,
requiring no manual calculations.
In this mode, "REL" appears in the display.
If the “(REL)” button is pressed again, the unit will return to dBm
mode.
(8). Automatic offset compensation (Model 211B/212B-1/213B-1)
This function effects the automatic offset compensation of the optical
input port, canceling out any offset value, which may cause large errors
when measuring extremely low light levels.
To perform this function, completely blind the input port and turn on the
power while pressing the “(REL)” button.
The countdown will be displayed. It will be complete in about ten
seconds.
To cancel this function, press “(REL)” button again during the
countdown, and then the unit will be in dBm mode without the offset
compensation.
If the blind of the input port is not enough so that the compensation
cannot be accomplished, “Err” will appear in the display. In this case,
press “(REL)” button again, and then the unit will be in dBm mode
without the offset compensation.
To blind the input port completely, put the blind cap (option) on the
input port or put the unit on a board to cover the input port.
3-3 Battery replacement
If the “B” mark appears on the LCD, replace the battery to new one.

- -
6
3-4 Cleaning of the sensor
Remove the connector adapter or the protection cap from the sensor
port before use, and confirm if dirt nor dust are not on the sensor
surface using the magnifying glass. Blow it off with a clean air blow
when the sensor is dirty.
When only the air cannot take dirt on the sensor, rub the sensor gently
with the cotton swab. The cotton swab must be unused and dried one.
Confirm if dirt is taken off completely with the magnifying glass.
Throw away the used cotton swab without using it again.
When dirt sticks to the sensor, clean it by the following methods.
① Drip absolute ethanol to the sensor surface by several drops,
and rub gently with the cotton swab.
② Immediately wipe and take off the ethanol on the sensor
surface with a new, dry cotton swab.
Observe the sensor surface with the magnifying glass. When dirt
remains, repeat ① ②. Throw away the used cotton swab without
using it again.
4. Specifications
4-1 Sensor
MODEL
211B
212B
213B
Sensor type
InGaAs
Photo diode
Fiber type
SM 9/125 to
GI
62.5/125
Sensor Diameter φ1 mm
Wavelength 850, 1310,
1490, 1550nm
1310, 1490,
1550, 1650nm
1310, 1490,
1550, 1625nm
Uncertainty
(Coverage factor; k=2)
+/- 3% (1310nm, -10dBm, 23+/-5℃)
Max.
Input
power
+10dBm
Warning: The surface of the sensor is the glass of 0.3 mm in
thickness. Do not clean the sensor directly with
cleaning tools such as "Ferrule-mate", "One-Click
-Cleaner" or "CLETOP-stick", with the connector
adapter attached. Do not rub the sensor surface
strongly, or sensor may be broken or damaged.
Caution: Before cleaning the sensor, the connector adapter
must be removed.

- -
7
4-2 General
MODEL
211B
212B
213B
Measurement mode
Absolute value measurement (dBm
)
Relative
value mea
surement (dB
) *1
Measurement period
3 times per second
Measurement range
-
70dBm
to
+5dBm
(
-
65dBm
to
+5dBm
at 850nm)
Resolution
0.01dB
(below
-
50dBm, 0.1dB)
Display
LCD
Over / Under flow
“Hi dBm” / “Lo dBm”
Low Battery
“B” indicator
Memory Function Selected wavelength and reference value at
power off
Auto off
10 minutes after the
final key operation
Temp.
Operation
*2
-10℃ to +50℃ (+10℃ to +40℃ *3)
Storage *2
-20℃ to +50℃
Power supply UM-3(AA) battery x 1pc
(Manganese, Alkaline, Ni
MH
)
Power consumption
Approx.
20
mW
Battery life
Approx.
160
hours (with
Alkaline
batteries)
Outer dimension 61(W) x 99(H) x 22(D) mm (Main Unit)
65(W)
x
120(H)
x
24(D)
mm
(with
Cover
)
Weight
Approx. 130g
(
I
ncluding batteries)
Accessories
180-SC Adapter ×1
UM-3(AA)battery ×1
Cover ×1
Instruction manual ×1
Strap ×1
*1: In case of Model 211B/212B-1/213B-1.
*2: 80%RH or less, non-condensing.
*3: In case of 1625nm.
Specifications are subject to change without notice.
5. Option
Model
Note
Connector Adapter
180
-
SC
NTT SC
180
-
FC
NTT FC
180
-
ST
Lucent ST
180
-
DIN
DIAMOND DIN
180
-
SMA
ANPHENOL SMA, 906/905
180
-
BC
Lucent BICONIC

- -
8
180
-
L
C
Lucent LC
180
-
MU
NTT MU
180
-
SBC
Lucent SMALL BICONIC
180
-
MBNC
SUMITOMO MINI BNC
180
-
SMA/DIA
DIAMOND SMA φ2.5mm
Filters in Adapter 180-FSC NTT SC
Selectable filters (1490nm/1550nm)
Blind Cap
180
-
C
To blind input port
6. After-sales service information
When making requests for repair service, please bring the instrument
directly to the dealer. If this is impossible, however, send the instrument
directly to our sales office in Tokyo, Japan.
To ensure speedy and reliable repair, always include information as to the
type of failure and cause. Return accessories with the instrument if
required.
Warranty
Graytechnos Co.,Ltd. warrants this product to be free from defects in
material and/or workmanship for one full year from date of shipment.
During the warranty period, we will, at our option, repair or replace any
product which proves to be defective.
For warranty service, send the product prepaid to the distributor or
Graytechnos Head Office in Tokyo, Japan. The repaired product will be
returned prepaid to Buyer.
Limitation of Warranty
This warranty shall not apply to defects resulting from any misuse,
misapplication, unauthorized modification, improper maintenance or
operation or storage outside of the environmental specifications.
Graytechnos makes no other warranties, expressed or implied, including
without limitation thereof, any implied warranty of merchantability or fitness
for a particular purpose.
Graytechnos shall not be responsible for any direct, indirect , special,
incidental or consequential damages.
Graytechnos Co.,Ltd.
Kojima-build 2F, Ueno 1-6-5, Taito-ku,
Tokyo, 110-0005 Japan
Phone:[phone] Fax:[phone]
email:[e-mail]