Omicron CMC 353 - Low Level Outputs LL out for External Amplifiers

CMC 353 Reference Manual
52
6.3.6 Low Level Outputs "LL out" for External Amplifiers
The SELV interface connector "LL out 1 - 6" holds two independent
generator triples. These six high accuracy analog signal sources per
connector can serve to either control an external amplifier or to directly
provide small signal outputs.
In addition, the SELV interface connector provides a serial digital interface
(pins 8-16; see below) that transmits control and monitor functions between
the CMC 353 and the external amplifiers. Supported devices are the
CMA 156, CMA 56, CMS 156, CMS 251 and CMS 252.
The low level outputs are short-circuit-proof and continually monitored for
overload. They are separated through reinforced insulation from the power
input and from the load outputs (SELV interface). They deliver calibrated
signals in the range from 0 to 7 V
eff
nominal (0 to ± 10 V
peak
).
Both the selection of the particular amplifier as well as the specification of
the range of the amplifier takes place in the Test Universe software.
Figure 6-10:
Pin assignment of "LL out";
view onto the connector
from the cable wiring side.
"LL out 1-3" and "LL out 4-6" each make up a selectable voltage or current
triple.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin Function
Pin 1 LL out 1
Pin 2 LL out 2
Pin 3 LL out 3
Pin 4 Neutral (N) connected to GND
Pin 5 LL out 4
Pin 6 LL out 5
Pin 7 LL out 6
Pin 8-16 For internal purposes
Housing Screen connection