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1.
DESCRIPTION
Response Test Unit Type 4409.
The Unit Type 4409 groups, in the same cabinet, three independent sections
which are connected as shown in Fig. 1.15. The left hand knob (Fig. 1.14)
relates to the channel selector and the right hand one to the filter section. The
synchro-starter is fully automatic.
The unit is transistorized and the power supply is taken from the 24 Volt DC
circuit of the Level Recorder Type 2'305
via
the multi-pin plug.
Fig. 1.14. Response Test Unit Type 4409.
4409
462335
Fig. 1.15. Block diagram of the 4409. (The synchro-starter is only connected
to the filter-input terminal when a DC power supply of 24 V is applied between
pins 1 and 4 of the multipin plug).
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