Product ManualManual

The 7702BPX-LB and 7703BPXA-LB L band 2 x 1 protection switches provide automatic changeover functionality to provide bypass protection for RF signals from 950MHz to 2250MHz.

The 7703BPXA-LB has integrated VistaLINK® technology for remote control and monitoring capability via SNMP. This provides the user with the ability to locally or remotely configure and monitor parameters such as module status, selected input, power level and switching threshold.

When used for automatic changeover, the 7702/7703BPXA-LB has a MAIN input and a STANDBY input. It will automatically switch to the Standby input when the Main input power is weak or lost. Switch back to the Main input when the signal is re-established, may be configured to happen manually or automatically. The 7702/7703BPX-LB may also be configured to operate manually as a 2:1 switch, which may be controlled locally or remotely via GPI or SNMP (7703 model only).

The 7702BPX-LB and 7703BPXA-LB occupy one card slot and can be housed in the 1RU 7801FR frame which holds up to four single or two dual slot modules, the 3RU 7800FR frame which has a 15 slot capacity, the portable 3RU 350FR frame which has a 7 slot capacity, or a standalone enclosure which holds a single module.

  • Intelligent auto switching with input power detection
  • User definable threshold levels on 7703BPXA-LB version
  • Maintains switch state and RF channel on loss of power to card or frame
  • Supports automatic or manual control via GPI or SNMP on 7703BPXA-LB
  • Switch state indication via GPO
  • Card edge LEDs indicate active input channels, output channel and power levels below threshold
  • Fully hot swappable from front of frame
  • Wide operating frequency range, 950MHz - 2250MHz
  • Comprehensive signal and card status monitoring via four digit card edge display or remotely through SNMP and VistaLINK® capable on 7703BPXA-LB version

Download Datasheet


RF Input/Output
Number of Inputs2
Number of Outputs1
ConnectorBNC per IEC 61169-8 Annex A (F-Type and SMA optional)
I/O Impedance75Ω
Frequency Response
950MHz to 2250MHz< ±1.5dB
Insertion Loss
950MHz-1450MHz< 4dB
950MHz-2250MHz< 5dB
Return Loss> 10dB
Isolation> 45dB
Input Power Range0dBm to -50dBm
General Purpose Input
Number of Inputs2
TypeOpto-isolated, active low with internal pull-ups to +5V
Connector2 pins plus ground on 6 pin terminal strip
Signal Level
+5V PullupLow: -5V to +2.5V DC, High: 3.5V to 10V DC
+12V PullupLow: -5V to +9.5V DC, High: 10.5V to 15V DC
Maximum Sink Current15mA (input shorted to ground)
Maximum Leakage Current
for Input High
General Purpose Output
Number of Outputs1
Type"Dry Contact" relay contacts - normally open & normally closed contact provided
Connector3 pins on 6 pin terminal strip
Voltage+12V DC
Power4 Watts
Number of Slots1

Ordering Information

7702BPX-LB2 x 1 RF Protection Switch for L-Band Frequencies
7703BPXA-LB2 x 1 RF Protection Switch for L-Band Frequencies, with VistaLink™ monitoring
7702BPX-LB-B502 x 1 RF Protection Switch for L-Band Frequencies, 50Ω BNC connectors
7703BPXA-LB-B502 x 1 RF Protection Switch for L-Band Frequencies, 50Ω BNC connectors, with VistaLink™ monitoring
7702BPX-LB-S502 x 1 RF Protection Switch for L-Band Frequencies, 50Ω SMA connectors
7703BPXA-LB-S502 x 1 RF Protection Switch for L-Band Frequencies, 50Ω SMA connectors, with VistaLink™ monitoring
Ordering Options
Notes75Ω I/O Impedance ships standard
Rear plate and fiber connector must be specified at time of order - eg: [model]+SC+3RU
Connector Suffix
+F7575Ω F-Type
Rear Plate Suffix
+1RU1RU rear plate for use with 7701FR Multiframe
+SAStandalone Enclosure Rear Plate
+3RU3RU rear plate for use with 350FR, 7700FR-C or 7800FR Multiframes
350FRPortable Multiframe which holds 7 single slot modules
7700FR-C3RU Multiframe which holds 15 single slot modules
7800FR3RU Multiframe which holds 15 single slot modules
7701FR1RU Multiframe which holds 3 single slot modules
S7701FR7700 Series Standalone Enclosure