【 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.
Page 5
(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).
1. GENERAL INFORMATION The hand-held 205A/215 Optical Power Meter is designed to measure optical power 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.
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.
3 - 2. Optical MODEL 205A Sensor Si photodiode InGaAs photodiode Sensor φ8mm φ1mm Diameter 660, 780 850, 1300 Wavelength 820, 850nm 1310, 1550nm Measuring - 60dBm to +10dBm - 60dBm to +5dBm range (1nW to 10mW ) (1nW to 3.2mW ) ±3% ±3% Uncertainty...
Page 9
① POWER Press the POWER key to operate the unit. Press the POWER key again, and the unit will be turned OFF. ② 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.
Page 10
⑦ Analog output jack This jack is used to connect the unit to a recorder with the miniature plug. CAUTION: (1). Do not input signals to this jack. (2). A recorder should be the one of high impedance (more than 100k). ⑧...
4 - 3. Function keys >1s ZEROSET MODE W/dBm REL(dB) A>1s HOLD MANU POWER ON /OFF Fig. 4 - 3 - 1 W/dBm The measured optical power is expressed in W or dBm. When the unit is turned on, it starts in the W mode automatically.
Page 12
(wavelength) This key is used to select the wavelength. The selected wavelength is indicated “▼” on the LCD. Whenever this key is pressed, the “ ▼ ” will move to other wavelength rotating through the four. By this operation, manual ranging will be canceled.
AUTO MANU lowest range uppermost range Fig. 4 - 3 - 2 In order to return to the autoranging mode, press the W/dBm key or press and hold the MANU key for more than 1 second (A>1s). If the unit is turned off in the manual ranging mode, it will start in the same mode and the range selected when the unit was turned off at the next power on.
Page 14
(3). Measurement Fiber Remove the blind cap and tightly attach connector adapter Connector Blind cap appropriate to the fiber connector Connector used for measurement. adapter Input port To get accurate measurements, do not allow ambient light to enter the sensor and maintain the fiber in the same physical configuration during measurements as well as tighten the connectors securely.
4 - 5. Light Source Unit and Battery Replacement (1). Light source unit replacement Pops out Turn unit before replacement. Slide the removal Light source unit catch upward so that the light Removal catch source unit pops out. When fitting the light source unit, align the key groove of the main unit and the light source unit, and insert the...
4 - 6. Cleaning of the sensor Warning: The sensor surface of MODEL 215 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.
5. OPTIONAL ACCESSORIES In order to enable the instrument to provide additional measuring functions, the following optional products are available. Connector adapter / AC adapter Model No. Remarks Connector 180-FC adapter 180-SC 180-MU 180-ST Lucent 180-LC Lucent 180-SMA Anphenol SMA,906/905 180-HTL Toslink TOCP100, 150, 155, 200,...
6. REPAIR SERVICE INFORMATION When making requests for repair service, please bring the product to the distributor or send it directly to Graytechnos Head Office in Tokyo, Japan. When sending it, always pack it in its original or equivalent packing material and pack together with your name, address and telephone number.
Page 19
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...
Need help?
Do you have a question about the photom 205A and is the answer not in the manual?
Questions and answers