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ABFS
MODE Menu With Built-in Noise Generators
Option ABFS-B1 / Option ABFS-B3
If ABFS is equipped with option ABFS-B1 as well as with option ABFS-B3, the number of noise
generators available is one or two. The following combinations of options ABFS-B1/ABFS-B3 are
possible with the basic unit and option ABFS-B2. The operating modes or signal paths are displayed in
the MODE submenu of ABFS.
Table 4-1
Possible combinations of options with basic ABFS unit
Option ABFS-B1
first noise source
Basic ABFS unit
Basic ABFS unit
Basic ABFS unit
Basic ABFS unit
Fig. 4-12 shows the ABFS basic unit with built-in option ABFS-B1. The ABFS-B1 noise source always
follows FSIMA1 in the signal path, it is not possible to connect channel 2 with the noise generator in
mode 2CHANNEL/6PATH/2INPUT/2OUTPUT, for example.
Basic ABFS unit with built-in option ABFS-B1 (one noise generator available)
0.0
ILOSS A1
FSIM A-2CH/2IN/1OUT
MODE
FSIM
AWGN
CALIBRATE
MEM SEQ
HOP CONTROL
UTILITIES
HELP
Fig. 4-12
MODE menu (option ABFS-B1 installed)
When a second noise source (option ABFS-B3) is fitted, it follows FSIMA2 in the signal path of the
basic unit or FSIMB1 if a second fading group (option ABFS-B2) is fitted. See Fig. 4-13 and Fig. 4-14.
1114.8564.12
Option ABFS-B2
second fading group
X
X
X
dB
NLEV A1
AWGN A1
MODE FSIM
IQ_IN1
IQ_IN2
Option ABFS-B3
second noise source
X
X
-17.0
ILOSS A2
dBfs
2CHANNEL/ 6PATH/2INPUT/1OUTPUT
GROUP A
IQ_OUT1
AWGNA1
FSIMA1
FSIMA2
4.17
Noise Generator
X
X
0.0
dB
E-2
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