» Redundancy Switches&Frequency Reference » A4000
The Quartzlock A4000 redundant switch is a 1U, 19” rack mount unit that switches automatically from a primary to a secondary source.
There are four inputs on the rear of the instrument - two signal and two DC control. The inputs are a primary source (A) and a secondary source (B). These sources are switched, dependant on the control input, one for the primary (A) and the other for the secondary (B).
The control lines are 0 ~ 5v DC active high (+5v DC).
There is one single signal output on the rear panel. This is the output from either signal input, dependant on the control input
The Quartzlock A4000 is installed in many remote, unmanned telecommunications base stations to ensure continuous time and frequency standards are available for mission critical applications.
• Voltage 220-240v AC
• Frequency 40-50Hz
• Power characteristics 300mA Max
• Ambient operating temperature: -10°C to +55°C (-65 to +65 op)
a) Signal A & B 1 - 100 MHz sine wave, 10 dBm nom into 50W nom.
b) Control A & B 0 - 5v Control Line Active High
a) Signal A or B dependant on control A & B
This product can have the following options applied to
change its specification
Option N - No Options Available