Work Microwave VSCU - Technical Description; Function of the Upconverter; Front Panel; Rear Panel

Satellite Upconverter Manual WORK Microwave
10 / 49 V151207
2 Technical Description
2.1 General
The Upconverters from WORK Microwave are designed to convert an input signal in the frequency bands
70 MHz, 140 MHz or 720 MHz into a RF output signal (S, C, X, Ku, or Ka band).
2.2 System Characteristics
· Frequency step size 100 Hz or 200 Hz
· Dual or single conversion
· No spectrum inversion
· IF input: 70 ± 20 MHz, 140 ± 40 MHz or 720 ± 200 MHz (other frequencies are possible)
· Low phase noise
· Adjustable attenuation in 0.1 dB steps
· Equalization (option for devices with 720 MHz IF)
· Front panel operation
· Potential free relay outputs for summary alarm
· Test output for local oscillators
· Test output for RF output signal on the front panel
· Remote control via serial interface (RS 485/RS 232), TCP/IP, HTTP or SNMP
· 16 programmable memory settings
· Non volatile memory
· Event log with time stamps
2.3 Function of the Upconverter
2.3.1 Main Modules
The Upconverter has a modular structure.
The unit consists of four main parts, the Upconverter module, the
main power supply, the master communication module (Main controller) and the user interface.
The Upconverter module includes all components (local oscillators with synthesizers, OCXO-reference, mix-
ers, filters, amplifiers), which are necessary for a dual conversion Upconverter.
The switched mode power supply delivers a +24 V DC voltage to the master communication module.
The master communication module controls all other modules within the device and distributes 24 V DC,
6.5 V DC and -4 V DC to all other modules within the Upconverter module and the display/keypad. The mas-
ter communication module gets its inputs via the remote interfaces or the keypad.
The user interface consists of a keypad, a LC display for local control, a serial interface (RS485/RS232) and
an IP over Ethernet interface for remote control. The Upconverter functions can be controlled either locally or
remotely.
Figure 1 indicates the main function blocks of the Upconverter including the main external interfaces.