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RSR GNSS Transcoder™ User Manual
94
© 2017 Jackson Labs Technologies, Inc.
4.14.1 SERVo:LOOP?
This command returns the currently enabled servo loop and responds with either TCXO or CSAC.
This command is supported only on the RSR GNSS Transcoder™ with the internal CSAC option.
4.14.2 SERVo:COARSeDac
This command sets the coarse DAC that controls the TCXO EFC on units without CSAC option. The
RSR GNSS Transcoder™ control loop automatically adjusts this setting during disciplining. The
user should not have to change this value.
This command has the following format:
SERVo:COARSeDac <int> [0,225]
4.14.3 SERVo:DACGain
This command is used for factory setup.
4.14.4 SERVo:EFCScale
Controls the Proportional part of the PID loop. Typical values are 0.5 to 3.0. Larger values increase
the loop control at the expense of increased noise while locked. Setting this value too high can cause
loop instabilities.
This command has the following format:
SERVo: EFCScale <float>[0.0 , 500.0]
4.14.5 SERVo:EFCDamping
Set’s the Low Pass filter effectiveness of the DAC. Values from 2.0 to 50 are typically used. Larger
values result in less noise at the expense of phase delay.This command has the following format:
SERVo:EFCDamping <float>[0.0 , 4000.0]
4.14.6 SERVo:SLOPe
The parameter determines the sign of the slope between the EFC and the frequency variation of the
TCXO. This parameter should be set to match the TCXO’s EFC frequency slope and should not be
changed from factory settings. This command has the following format:
SERVo:SLOPe <NEG | POS >
4.14.7 SERVo:TEMPCOmpensation
This command is not supported on the RSR GNSS Transcoder™ board.
Содержание RSR GNSS Transcoder
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