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RFCalSys is a multi-port power meter that supports LLRF signals calibration.

General description

RFCalSys is a 16-channel power meter that is calibrated for 500MHz signals. The sensor is a low-noise and broadband power detector from Mini-Circuits. In addition, it has a Beagle Bone Black that works as a digitizer for the DC signal from the sensors and EPICS IOC (Input/Output Controller) server to provide these measurements for high-level application through PVs (Process Variables). It includes a +5V DC power supply. The simplified diagram with the main components and ports is shown in Fig. 1.

Figure 1: RF Calibration System block diagram.

Versions Control

Table 1: RF-RFCalSys version control.
Version Date Description
V1I1 First assembly
V1I2 Changed acquisition board

The schematic, bill of materials, and all other files related to this crate can be found at:
\\centaurus\LNLS\Grupos\RF\Sirius DOC_TEC_RF\Sirius_DOC_TEC_RF\LLRF_Rack\Crates\Calibration_System

Devices in use

Table 2: RF-RFCalSys devices.
Device # Version Device Name Location
001 V1I1 RA-RaBO01:RF-RFCalSys Booster LLRF Rack
002 V1I2 RA-RaSIA01:RF-RFCalSys Storage Ring A LLRF Rack

Crate Panels

Figure 2: RF Calibration System front panel art.
Figure 3: RF Calibration System rear panel art.

Device PVs

Table 3: RF-RFCalSys PVs.
PV Name Description
*:RF-RFCalSys:PwrdBm*-Mon Power Signal from channel 1-16 in dBm.
*:RF-RFCalSys:PwrW*-Mon Power Signal from channel 1-16 in Watt.
*:RF-RFCalSys:OFSdB*-Mon Offset to channel 1-16 in dB.