24926 Highway 108 Sierra Village, CA 95346 Phone: (800) 545-1022 Fax: (209) 586-1026 E-Mail: sales @olsontech.com External Modulation 1550nm CATV Optical Transmitter High-Performance Model OTOT-EM55XL Features and Benefits High performance externally modulated 1550nm DFB laser CATV transmitter. Low noise, narrow linewidth CWDFB laser. DWDM ITU grid wavelength is adjustable to 100GHz via front panel. Adjustable SBS threshold from +13dBm to +19dBm on 0.1dB steps increases system flexibility. Dual, hot plug-in power supplies available for high reliability; 100 to 240VAC or 36 to 72 VDC. LCD display, LED status indication, and front panel -20dB front panel RF test point aide in set-up and operation. Electro-optical modulator offers dual +6dBm optical outputs. Automatic RF gain control: CW, video, and manual modes. Sophisticated web and SNMP interface control and monitoring. General purpose I/O interface for remote functions. Housed in a 1RU 19" rack-mount enclosure for use in standard equipment racks. SC/APC optical connector standard. FC/APC optional. The high performance Olson Model OTOT-EM55XL 1550nm Externally Modulated CATV Optical Transmitter uses a low-noise, narrow bandwidth, CW laser as a light source. The external modulator amplitude modulates the light, allowing the transmitter to eliminate the chirp associated with 1550nm direct modulation lasers. It is deal for CATV supertrunk links (100km & more) and multipoint distribution networks. The OTOT-EM55XL provides state-of-the-art bandwidth from 47MHz to 1,000MHz. It also offers superb stability over the full operating temperature range from 0C to +50C. Direct modulation 1550nm CATV transmitters suffer from the effects of dispersion that can occur even in modest length fiber runs (10-20km). The key degradation is CSO caused by the laser chirp. In networks using an EDFA, the output fiber optical launch power must also be closely regulated to avoid performance degradation of due to SBS. Olson's Externally Modulated CATV transmitter can compensate for these types of distortion, allowing for high quality signal transmission of multiple CATV channels for distances up to 100km or more. The widely adjustable SBS value on the XL version further increases the transmitter's flexibility, allowing the network to be optimized for a wide range of fiber lengths. The unique ability of the OTOT-EM55XL to tune to several different DWDM channels simplifies logistics by alloing one spare to cover multiple installed units. The transmitter is enclosed in a 19" wide, 1RU rack chassis for using in a standard EIA 19" rack. Front panel controls and a LCD display allow the user to quickly monitor and control system parameters. Optical connectors are SC/APC standard, with an option for FC/APC connectors. Single or Dual AC and DC power supply options are available. www.olsontech.com Rev X2 All Specifications Subject to Change Without Notice Dec. 2007 CATV Transmitter System Specifications General Characteristics (with SM 9/125m Fiber) Laser Wavelength (ch. 22-46) Optical Connector Min 1540 Optical and RF Performance (with SM 9/125m Fiber) Typ Min Laser Wavelength 1547 (ch. 23-38) Wavelength Adjust (50 GHz steps) -100 Laser Linewidth Optical Output Power (dual) +5.0 SBS Suppression (adj 0.1dB Steps) +13 Max Units 1560 nm ITU Grid SC/APC FC/APC >30 <-160 20 -20 Side Mode Suppression Relative Intensity Noise <-158 Nom. Input Level per Tx Ch. RF Monitor Output Level (+0.2 to -0.8dB @ 862 MHz; -1.3dB @ 1GHz) AGC Dynamic Range -6 +3 Impedance (F-female) 75 Return Loss (47 MHz, -1.5dB/oct.) >15 >20 Control Interface Ethernet 10/100 dB dBc/Hz dBmV dB RF Frequency Range Flatness (47-860MHz) Flatness (860-1000MHz) Version Channel Plan Number of Channels TV/FM (-4dB) /QAM64 (-10dB) Noise Bandwidth CNR Tx/Rx CNR Link 1 CNR Link 2 CNR Link 3 CSO Tx/Rx and Link 1 CSO Link 2 CSO Link 3 at output #1 CTB Version Channel Plan Number of Channels TV/FM (-4dB) /QAM64 (-10dB) Noise Bandwidth CNR Tx/Rx CNR Link 1 CNR Link 2 CNR Link 3 CSO Tx/Rx and Link 1 CSO Link 2 CSO Link 3 at output #1 CTB dB Ohm dB MB/s Physical Characteristics Min Weight Dimensions (W x L x H) Typ Max Units 21.4 lbs. 9.7 kg 19 x 11 x 1.75 in. 482.6 x 279.4 x 44.5 mm Electrical and Environmental Characteristics Power Supply Voltage Power Supply Voltage Power Consumption (110VAC) Power Consumption (48VDC) Operating Temp. Range Storage Temp. Range Humidity Min 100 36 Typ <50 <50 0 -20 20 Max Units 240 VAC 72 VDC W +50 +85 85 C C % EMI meets EN50083-2 (April 1996) and EN50083-2/A1 (February 1998). Typ Max Units 1560 nm ITU Grid +100 0.3 +6.0 47 +7.0 +19 1000 <0.75 <1.5 PAL84 PAL-D 84/0/0 5 52.5 52.0 50.5 49 65 65 63 65 N77 NTSC 77/0/0 4 53.5 53.0 52.0 50.0 65 65 65 65 GHz MHz dBm dBm MHz dB MHz MHz dB dB dB dB dBc dBc dBc dBc MHz dB dB dB dB dBc dBc dBc dBc www.olsontech.com Rev X2 2 Dec. 2007 CATV Transmitter Test Configurations Booster EDFA First Fiber Length In-Line EDFA Second Fiber Length Rx Tx/Rx No No No No 0dBm Link 1 No 35km No No 0dBm Link 2 16dBm 65km No No 0dBm Link 3 13dBm 52km 13dBm 52km 0dBm NOTES: 1) Rx with 7pA/Hz Input Noise Current Density 2) EDFA's with 5dB Noise Figure 3) RF Input Level at 20dBm/Channel Ordering Information Freq. Plan Opt. Conn. RF Conn. Power Supp. XX OTOT-EM55 XL (See Below) (See Below) (See Below) (See Below) (ITU Ch.) Frequency Plans N = NTSC 77 Chan P = PAL 84 Chan Optical Connector SA = SC/APC FA = FC/APC RF Connector Location F = On Front Side R = On Rear Side Power Supply AC/AC = 2x (100 to 240VAC) DC/DC = 2x (36 to 72 VDC) AC/DC = Mixed 230 VAC/48 VDC) ITU Channel Std = 15505nm or Two digit DWDM ITU channel from Channel 22 to 46 www.olsontech.com Rev X2 3 Dec. 2007