Specifications Chapter 1

AE02B-A3659 Rev -- DESCRIPTION

Document use is restricted to that described on cover 1-1

CHAPTER 1

DESCRIPTION

1.1 OVERVIEW

The SelectAmp NBPCS-900-3 bi-directional channelized paging repeater provides selective frequency

amplification of user specified frequencies in the 901-902, 930-931, and 940-941 MHz Narrowband PCS

bands. The unit can be configured with up to three channelizers allowing the user to configure the unit to

suit their needs. The channelizers are available in two versions: a 930 MHz, 12.5 kHz Bandwidth version

intended for POCSAG/FLEX and a 940 MHz, 50 kHz Bandwidth version intended for ReFLEX. Frequency

selection, gain adjustment and fault monitoring is accomplished with monitor and control circuitry and

firmware.

Within this manual, “Forward Channel” refers to the RF signal path from the base station to the pager and

the “Reverse Channel” refers to the RF signal path from the pager to the base station.

1.2 ELECTRICAL SPECIFICATIONS

Table 1-1 below contains the electrical specifications.

Table 1-1 Electrical Specifications

Parameters Specification

Frequency Range Forward (930) = 928 – 932 MHz.

Forward (940) = 938 – 942 MHz.

Reverse = 897 – 903 MHz.

Composite Output Power Forward = 1 Watt.

Reverse = 500 mWatts.

Output 1 dB Compression Point Forward = 4 Watts.

Reverse = 1.3 Watts.

Power Gain

Fwd Channels

Rev Channel

50 to 95 dB nominal, adjustable from front panel.

50 to 85 dB nominal, adjustable from front panel.

Third Order Output IP3 Forward = +51 dBm.

Reverse = +43 dBm.

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AE02B-A3659 Rev -- DESCRIPTION CHAPTER 1 DESCRIPTION 1.1 OVERVIEW The SelectAmp NBPCS-900-3 bi-directional channelized paging repeater provides selective frequency amplification of user specified frequencies in the 901-902, 930-931, and 940-941 MHz Narrowband PCS bands. The unit can be configured with up to three channelizers allowing the user to configure the unit to suit their needs. The channelizers are available in two versions: a 930 MHz, 12.
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AE02B-A3659 Rev -- 1.2 DESCRIPTION ELECTRICAL SPECIFICATIONS (CONT.) Table 1-1 (Cont.) Electrical Specifications Parameters Specification Forward 1 dB Bandwidth: 930 MHz, POCSAG/FLEX Channelizer 940 MHz, ReFLEX Channelizer 12.5 kHz. 50 kHz. Reverse 3 dB Bandwidth 897 – 903 MHz. Group Delay Forward = ≤ 30µs Reverse = ≤ 2µs Adjacent Channel Rejection: 930 MHz, POCSAG/FLEX Channelizer 940 MHz, ReFLEX Channelizer ≥ 30 dB @ Fo ± 12.5 kHz. ≥ 30 dB @ Fo ± 55 kHz. RF Port Impedance 50 ohms nominal.
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AE02B-A3659 Rev -- 1.3 DESCRIPTION MECHANICAL SPECIFICATIONS Table 1-2 below contains the mechanical specifications. Table 1-2 Mechanical Specifications Parameters Specification Size Amplifier: Height: Width: Depth: 13.3 cm (5.25 inches). 48.3 cm (19 inches). 48.3 cm (19 inches). Weight Amplifier: 40 lbs (18.2 kg). Mounting Table top mount (rubber feet included) or 19” Rack Mount (slides optional). Power Connections AC Power cord supplied with unit. RF Connections Type N female.