Rohde & Schwarz OSP-B200S2, User Manual

Page: 145 / 327

Modules
R&S
®
OSP
145 User Manual 1178.7100.02 ─ 05
In the module version .42 with 2 attenuators, the attenuators A3 and A4 are not availa-
ble.
Figure 3-142: Representations of the module on the control screen (left: version .42, right: ver-
sion .45)
Attenuation levels
The solid-state attenuators are 4-bit digital attenuator devices, allowing to set attenua-
tion levels in 16 steps, from 0 to 15. Roughly, each step increases attenuation by 2
dB,
starting from nearly no attenuation at step 0, up to approximately 30 dB attenuation at
step 15. However, the actual attenuation levels in dB that correspond to each of the 16
steps are frequency-dependent. Refer to the data sheet for information on the attenua-
tion levels in specific frequency ranges.
For operation, see Chapter 4, "Operation" , on page 147 and Chapter 5, "Functions" ,
on page 155.
For remote control, refer to the chapters Remote Operation and RC Commands . For
an example, see
ROUTe:CLOSe
on page 253.
Note that you can use also the
ROUTe:ATTenuation
command for setting and query-
ing the attenuator steps.
3.58 R&S OSP-B300M Touchscreen Module
The R&S OSP-B300M is a touchscreen module (order no. 1528.3128.02) exclusively
for the 3HU base unit R&S OSP320 .
The module is factory-mounted by Rohde & Schwarz, only, in the two right-most slots
(FS04 and FS05) of the R&S OSP320, see Figure 2-5 . It has a special interface con-
nection and does not require a module bus cable.
The touchscreen is a TFT RGB LCD with capacitive touch function and 800 x 480 pix-
els ( WVGA resolution).
The module is not represented in the software's user interface, and you cannot query
its presence by SCPI commands like
*OPT?
.
R&S OSP-B300M Touchscreen Module