Rohde & Schwarz RTE Series - Page 775

Protocol analysis
R&S
®
RTE
775User Manual 1326.1032.02 ─ 20
"Couple
thresholds"
●
For Manchester and Manchester II coding, the upper and lower
thresholds are coupled to voltage values with the same magni-
tude but opposite sign (positive for the upper threshold and nega-
tive for the lower threshold). However, if the upper threshold is set
to a negative voltage or the lower threshold is set to a positive
voltage, coupling is disabled, and the other voltage (the one that
was not actively set) is automatically adjusted, to avoid an upper
threshold below the lower one, or a lower threshold above the
upper one.
●
For NRZ Clocked coding, the clock and data threshold values are
coupled to the same voltage.
Remote command:
BUS<m>:CMSB:MANChester:THReshold:COUPling on page 1735
BUS<m>:CMSB:NRZ:THReshold:COUPling on page 1741
Enable bit rate
Enables the bit rate settings for the coding standards "Manchester" and "Manchester
II". This setting is not available for "NRZ Clocked", but always enabled for the coding
standard "NRZ Unclocked", and also for triggering on signals in any coding standard.
Remote command:
BUS<m>:CMSB:BITRate:ENABle on page 1742
Bit Rate
Defines the transmission speed setting for the data signal. A bit rate definition is
optional for the coding standards "Manchester" and "Manchester II", not available for
"NRZ Clocked", but obligatory for "NRZ Unclocked" (and also for triggering on signals
in any coding standard). Default bit rate is 10 Mbps, permitted bit rates range from
300 bps to 2 Gbps.
For more details on the bit rate, see Chapter 13.14.1.1, "Special features of Manches-
ter coding", on page 767.
Remote command:
BUS<m>:CMSB:BITRate:VALue on page 1742
Enable gap time
Enables the gap time settings (always enabled for the coding standard "NRZ
Unclocked", and also for triggering on signals in any coding standard).
Remote command:
BUS<m>:CMSB:GAPTime:ENABle on page 1742
Gap time
Specifies a minimum gap time (idle time or timeout) between two frames. A gap time
definition is optional for the coding standards "Manchester", "Manchester II" and "NRZ
Clocked", but obligatory for "NRZ Unclocked" (and also for triggering on signals in any
coding standard). Default gap time is 10 µs, permitted gap times range from 1 ns to
1 s.
For more details on gap time and idle conditions, see Chapter 13.14.1.1, "Special fea-
tures of Manchester coding", on page 767.
Custom: Manchester / NRZ (option R&S
RTE-K50)M