Microlab, A Wireless Telecom Group Company, 25 Eastmans Road, Parsippany, NJ 07054 Tel: (973) 386-9696 • [email protected] • www.microlab.fxr.com • Fax: (973) 386-9191 DAS Carrier Conditioner, KM-55N Dual SISO/MIMO BTS Input to SISO/MIMO DAS PCS Band 1930-1990/1850-1910 MHz Rev. 1 *Connect for SISO Operation Interface 1900 band MIMO BTS Tx/Rx or 2 SISO BTS Tx/Rx ports with Simplex DAS Independently adjustable Tx and Rx levels High Reliability, RoHS compliant Low PIM, High Isolation Standard 2RU EIA Rack (3.5”) This DAS Carrier Conditioner, KM-55N, is designed to inte r- face either a single MIMO or 2 SISO Tx/Rx signals in the 1900 MHz PCS frequency range, with a simplex MIMO or simplex SISO DAS system. It allows independent level adjustment of the Tx and Rx elements of the wireless signal, once the signal is already split into Tx and Rx paths. The unit first separates each of the Tx/Rx inputs into Tx and Rx paths using a duplexer in both Leg A and Leg B. Each of the Tx outputs are then attenuated by a fixed 15dB attenuator before being fed to a 0-30 dB level adjustment to set optimum DAS performance. Each DAS Rx signal is fed to the Rx port of the duplexers via a similar level adjustment. If the system uses 2 SISO signals they may be combined with a supplied external jumper to feed a common DAS in both the Tx and Rx paths. Similar systems can be supplied for other wireless bands, using appropriate duplexers. (01/13) 1900 BTS Inputs Tx/Rx 0 Leg A Tx/Rx 1 Leg B Frequency: 1930-1990 Tx/1850-1910 Rx Return Loss: >15 dB, all ports Tx Power/input: 40W avg max., 3 kW max pk. Tx Path, SISO: >18 dB 1 attenuation plus an (with 15 dB pad) adjustable 30 dB in 1 dB steps. Rx Path, SISO: 3 dB 2 min. attenuation plus an adjustable 30 dB in 1 dB steps. PIM, typical: <-153 dBc in Rx band at input using two +43dBm tones Isolation P0 to P1: MIMO mode: Isolated/Isolated SISO mode: >60/25 dB (0dB on all attenuators) Impedance: 50Ω nominal Environment: 0°C to +65°C, IP64 Housing: 2RU, Passivated aluminum Connectors: N(f), Triplate Weight: 40 lbs. nom. Notes: In MIMO Mode: 1 >15dB Leg B 2 1.4dB typ. Leg B Specifications subject to change Leg A Tx or Leg AB Tx (Leg B Tx)* Leg B Tx* Leg B Tx or Leg AB Rx (Leg B Rx)* Leg B Rx* 1 Power Combiner 2 1 Power Combiner 2 15 dB Attenuator 0 - 30 dB Attenuator 0 - 30 dB Attenuator Tx Duplexer Network P0 Rx Tx Duplexer Network P1 Rx 15 dB Attenuator 0 - 30 dB Attenuator 0 - 30 dB Attenuator DAS Ports DCC Series™ - Preliminary Specification