Relevant query command, See also, Ecp,off: powering off ports b & f – Spectra Precision ProFlex 800 Reference Manual User Manual
Page 387: Function, Command format, Comments

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Set Command Library
Relevant Query
Command
$PASHQ,DYN
See Also
$PASHS,UDP
ECP,OFF: Powering Off Ports B & F
Function
This command is used to power off communication ports B
and F.
Turning off ports B and F may be useful when the receiver is
operated from the internal battery. When ports B and F are
not used, turning them off will allow you to extend the battery
operating time.
Command Format
Syntax
$PASHS,ECP,OFF[*cc]
Parameters
None.
Example
Turning off ports B and F:
$PASHS,ECP,OFF*40
Comments
The command is NAKed if a second GNSS board or/and the
extended internal memory is/are used and currently on. See
$PASHS,HDB,ON/OFF and $PASHS,EXM,ON/OFF.
Relevant Query
Command
$PASHQ,ECP
See Also
$PASHS,ECP,ON
ECP,ON: Powering On Ports B & F, 2nd GNSS Board and Extended
Internal Memory
Function
This command is used to power on communication ports B
and F. By default, ports B and F are on.