Product specifications

CRS-300 1:10 Redundancy Switch Revision 16

Introduction MN/CRS300.IOM

1–18

1.6.3 CRS-280 and CRS-280L Specifications

Characteristic

Requirement

CRS-280 (70/140MHz) CRS-280L (L-Band)

Tx/Rx Operating Freq 50 to 180 MHz 950 to 1950 MHz

Tx / Rx Connectors BNC female

N-Type female (50Ω)

Return Loss

18 dB return loss into 75Ω

(50Ω optional)

15 dB return loss into 50Ω

Transmit IF Loss/Flatness

Tx In To Tx Uplink Out

BU In To Any Uplink Out

< 1.5 dB over operating freq

< 0.8 dB/0.5 dB over operating freq

< 2.5 dB/1.0 dB over operating freq

Receive IF Loss/Flatness

Rx Downlink In To Rx Out

Any Downlink In To BU Out

< 5 dB over operating freq

< 4.0 dB/0.5 dB over operating freq

< 5.5 dB/1.0 dB over operating freq

Tx to Tx Channel Isolation > 50 dB > 70 dB

Rx to Rx Channel Isolation > 50 dB > 70 dB

Tx to Rx Channel Isolation > 60 dB > 90 dB

Powering of IF Switch From the CRS-300 chassis 100 to 240 VAC 50/60 Hz (25W)

Power Supply 90-264 VAC, 50/60 Hz (25 W) 90-264 VAC

Fuse

Dimensional Envelope

(Rack Mount 4RU)

19W x 2.5D x 7H inches (48.26W x 6.35 x 18H cm)

Weight < 10 lbs (< 4.54 kg) < 25 lbs (11.3 kg)

1.6.4 CRS-350 Specifications

Characteristic Requirement

User Data Interfaces (1) 25-pin 'D' male connector - ESC, overhead signals

(1) 15-pin 'D' female connector - IDR Alarms

(1) 9-pin ‘D’ female connectors - Audio

Power From CRS-300

Dimensional Envelope

(Rack Mount 4U)

19W x 4.0D x 7H inches

(48.26W x 27.5D x 18H cm)

Weight 5 lbs (2.2 kg)