Graytechnos photom 205A User manual

Optical Power Meter
󳜀󳜞󳜫󳜐󳜫󳛮
MODEL 205A/215
Instruction Manual
󰠦󲂾󰩣󰬊
HR1055-13J-10/20221205

INDEX
󳙧CAUTION 󳙨...............................................................................1
1. GENERAL INFORMATION....................................................... 3
2. CONFIGURATION................................................................... 3
3. SPECIFICATIONS ................................................................... 4
3 - 1. General.................................................................................4
3 - 2. Optical ..................................................................................5
4. OPERATING INSTRUCTIONS................................................. 5
4 - 1. Preparation...........................................................................5
4 - 2. Control Panel Descriptions...................................................5
4 - 3. Function keys .......................................................................8
4 - 4. Operation............................................................................10
4 - 5. Light Source Unit and Battery Replacement......................12
4 - 6. Cleaning of the sensor .......................................................13
5. OPTIONALACCESSORIES................................................... 14
6. REPAIR SERVICE INFORMATION ........................................ 15
󱓁󰷀
󳙧󰠦󳚟󰻡󰜷 󳙨........................................................................17
1. 󰳌󱿼 ...................................................................................... 19
2. 󰳴󰟣 ...................................................................................... 19
3. 󲀅󰯢 ...................................................................................... 20
3󳞪1. 󱮂󰳾 ............................................................................20
3󳞪2. 󳛙󳜆󳛷󳜐󳜫󳛮󰳾 .................................................................21
4. 󰦐󰨪󰻓 ............................................................................... 21
4󳞪1. 󰿞 ...................................................................................21
4󳞪2. 󳜀󳛼󳜚󲞤󳚟󲂾󰩣 .................................................................21
4󳞪3. 󰦐󳛨󳛓󳛲󳛰 .......................................................................23
4󳞪4. 󱍾󰻓................................................................................25
4󳞪5. 󰿜󳙻󳚹󳚤󲝢󰺆󱝝󳚟󰤏󰨪󰻓 ............................................27
4󳞪6. 󳛪󳜢󳛤󳚟󰾌󰣓......................................................................28
5. 󳛙󳜆󳛦󳜖󳜢............................................................................... 29
6. 󳛑󳜄󳛮󳜫󳛤󳜫󳜂󳛨 .................................................................... 30

-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. When
not in use, always cover the input/output port with blind
caps.
(2). Before use, clean the Sensor-port with canned air or a
new cotton swab according to "4-6. 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 maximum
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 “W/dBm”and “REL” button together.
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-
(8). Do not drop or swing the instrument with the strap.
(9). When measuring in a bright place, do not allow ambient
light to enter the sensor.
(10). Do not input signals to the ANALOG jack. A recorder
should be the one of high impedance (more than 100k).
(11). Never use any AC adapters other than the one intended
for this unit. Use of other AC adapters may damage the
unit.

-3-
1. GENERAL INFORMATION
The hand-held 205A/215 Optical Power Meter is designed to
measure optical power and attenuation from fiber optic
cables/devices used for optical communication.
It is calibrated at four different wavelengths (205A: 660, 780, 820
and 850nm, 215: 850,1300,1310 and 1550nm) and directly reads
the measurements at each wavelength.
The 205A/215 can be accommodated to various kinds of optical
connectors by using an appropriate connector adapter. It can be
used with not only silica but also plastic fibers (POF). In addition to
it, the 205A/215 has an analog output jack to plug a pen recorder
in.
2. CONFIGURATION
This optical power meter consists of the main unit and the sensor,
the light source units (optional) and the connector adapters
(optional) accommodating a variety of fibers.
Fig. 2-1
For information on the connector adapters and the light source
units, refer to Section 5. OPTIONALACCESSORIES.
Light source Unit
Model 205A/215
660, 850nm
1310,1550nm
Bare fiber
Plastic fiber
Silica fiber
Connector adapters
Sensor
Analog output

-4-
3. SPECIFICATIONS
3 - 1. General
Measuring mode: Absolute value measurement (W, dBm)
Relative value measurement (dB, REL)
Measuring period: 3 times per second
Display range: -70dBm to +10dBm(205A),
-70dBm to +5dBm(215)
Resolution: 0.1dB(205A), 0.01dB(215)
or 1/3200 of display range
Display: 3 1/2 digit LCD (max. display: 3200)
All segments flush when the unit is turned on.
Polarity : "-" appears automatically for negative values
Overflow : "Hi" appears when the input power is
beyond the measuring range.
Low-battery: " B " appears when the battery is down.
Light source: “LED”blinks when the light source is ON.
Analog output:
Voltage: Correspond to the W value, DC1mV/count
Plug: 2P Miniature plug
Ranging: Auto / Manual, 7-range(205A), 6-range(215)
Other functions: Auto-Zeroing, Non-volatile memory,
Data hold
Temperature: Operation: -10 to +50󳇾
Storage: -20 to +50󳇾
Humidity: 80%RH or less (non-condensing)
Power supply: UM-3(AA) battery 󲼃4pcs, or
AC100V/120V/220V
using an AC adapter (optional)
Power consumption: Approx. 70mW (LED OFF)
Battery life: Approx. 80 hours (LED OFF,Alkaline)
Dimensions: 90(W) 󲼃160(H) 󲼃40(D) mm
Weight: Approx. 430g (including batteries)
Accessories: SC type connector adapter 󲼃2
UM-3(AA) type battery 󲼃4
Hard carrying case 󲼃1
2P Miniature plug 󲼃1
Blind cap 󲼃1
Instruction manual 󲼃1

-5-
3 - 2. Optical
MODEL
205A
215
Sensor
Si photodiode
InGaAs photodiode
Sensor
Diameter
󳂆8mm
󳂆1mm
Wavelength
660, 780
820, 850nm
850, 1300
1310, 1550nm
Measuring
range
- 60dBm to +10dBm
(1nW to 10mW )
- 60dBm to +5dBm
(1nW to 3.2mW )
Uncertainty
(Coverage
factor; k=2)
󲻝3%
(850nm, -20dBm after
offset compensation,
23±5󳇾)
󲻝3%
(1310nm, -10dBm after
offset compensation,
23±5󳇾)
4. OPERATING INSTRUCTIONS
4 - 1. Preparation
Install the batteries (4-pcs) in the battery compartment
according to their polarities.
4 - 2. Control Panel Descriptions
󳏀
󳏁
󳏂
󳏃
󳏄
󳏅
󳏆
󳏇
󳏈
Fig. 4 - 2 - 1

-6-
󳏀POWER
Press the POWER key to operate the unit.
Press the POWER key again, and the unit will be turned
OFF.
󳏁LED
The light source unit (optional) is powered on and starts to
emit. When LED is on, "LED" appears in the display.
Press the LED key again, and the LED mode will be
canceled. This mode shortens the battery life since the light
emission needs much power, so always cancel the LED mode
unless "LED" is necessary.
󳏂Function keys
Function keys are described in “4 - 3”section.
󳏃INPUT port
This port is used to input optical power from fiber optics
which have been terminated with mating connectors. By
changing the adapter at this port, 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 "4 - 6.
Cleaning of the sensor". )
󳏄OUTPUT port
Install the light source unit (optional) here. By attaching
appropriate adapters to the top of the light source unit, a
variety of fiber optic cables that have been terminated with
mating connectors can be connected.
󳏅Display
The 3 1/2 digit liquid crystal display indicates measuring data
as well as a variety of modes, units and status indicators.
Displayed characters and symbols
HOLD, MANU, B(low-battery), - (minus), REL, dB,
dBm, nW, 󳁼W, mW, 󳔑(wavelength),
CAUTION: Do not input optical power greatly beyond
the maximum measuring range, or the
photodiode will be damaged.

-7-
󳏆Analog output jack
This jack is used to connect the unit to a recorder with the
miniature plug.
󳏇AC adapter jack
This jack is to plug the unit to the AC adapter when
supplying power from AC line. In this case, the batteries
installed in the unit are automatically disconnected.
󳏈Battery compartment
Install four batteries here.
CAUTION: (1). Do not input signals to this jack.
(2). A recorder should be the one of high
impedance (more than 100k).
CAUTION: Never use AC adapters other than the one
designated. Use of other AC adapters may
damage the unit.
＋
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