R&S AFQ100A Operating Manual page 135

R&S AFQ100A
FHOP-Bus
fhop_clk
fhop_strb
fhop_data
Bit Bit Bit
39 38
Input control signals for FHOP on the serial FHOP bus (BERT BNC connectors)
1401.3084.32
FHOP Parallel
FHOP Serial
Bit Bit Bit Bit
37 36 35 34 33
t
t
su
h
FHOP_CMD[7:0]
The index of the next segment is determined via
a data signal on the parallel FHOP bus. The
signal is fed in parallel as a binary digit via the
BERT BNC connectors. With the next segment
trigger event the signals are loaded as segment
index. The parallel data lines allow to address up
to 16 segments (index 0 to 15).
Note:
The FHOP mode requires the hardware
revisions Baseboard 3 Rev. 5 and SFB >
Rev. 01.05.05.
BERT CLOCK: bit 3 (MSB)
BERT DATA: bit 2
BERT RESTART: bit 1
BERT DATA ENABLE: bit 0 (LSB)
Remote-control command:
SOUR:WSEG:NEXT:MODE FPAR
The index of the next segment is determined via
a data signal on the serial FHOP bus. The data
and control signals are fed in at the BERT BNC
connectors at the rear of the instrument.
BERT CLOCK: fhop_clk
BERT DATA: fhop_data
BERT DATA ENABLE: fhop_strb
Data transmission starts with the MSB (most
significant bit). A strobe marks the LSB (least
significant bit) and thus the end of a valid data
sequence of 40 bits.
T (time between start of data signal and
setup
falling clock edge) and T
clock edge and end of data signal) are 5 ns each.
Remote-control command:
SOUR:WSEG:NEXT:MODE FSER
Bit Bit Bit Bit Bit
32 31 30 29
FHOP_DATA[31:0]
4.24
Baseband Block
(time between falling
hold
...
...
...
Bit Bit
28 1 0
E-3