R&S AFQ100A
Baseband Block
1401.3084.32 4.24
E-3
FHOP Parallel
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
FHOP Serial
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
setup
(time between start of data signal and
falling clock edge) and T
hold
(time between falling
clock edge and end of data signal) are 5 ns each.
Remote-control command:
SOUR:WSEG:NEXT:MODE FSER
fhop_clk
Bit
39
fhop_strb
fhop_data
FHOP_CMD[7:0]
FHOP-Bus
Bit
38
Bit
37
Bit
36
Bit
35
Bit
34
Bit
33
Bit
32
Bit
31
Bit
30
Bit
29
Bit
28
Bit
1
Bit
0
FHOP_DATA[31:0]
...
...
...
t
su
t
h
Input control signals for FHOP on the serial FHOP bus (BERT BNC connectors)
