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Document type:
Title:
Revision date:
Revision:
User's Manual (MUT)
Mod. V791, ICARUS 32-channel analog board
27/05/99
2
NPO:
Filename:
Number of pages:
Page:
00100/98:V791x.MUTx/02
V791MN4.DOC
17
15
4. Hardware settings
The hardware settings described in the following are foreseen for both the versions,
nominally the Mod.V791C and the Mod.V791Q.
Selection of the clock source (external/internal):
it is performed by using the relevant soldering jumper pad (S2) placed on the PCB (refer
to Fig. 4.1):
•
Soldering placed in Position A (high position, EXT):
Æ
external clock selected;
•
Soldering placed in Position B (low position, INT):
Æ
internal clock selected.
The default setting is external clock.
Generation of the RTXPWS power supply:
the RTXPWS output signal is used to 5 V to a possible external optical decoupler
which can be used to break the ground loop. The RTXPWS power supply is provided at
the relevant pin of the output connector (LINK CONN) when a soldering is performed on
the relevant soldering pad (S1) placed on the PCB (refer to Fig. 4.1):
•
No
Soldering:
Æ
no RTXPWS power supply on the LINK connector;
•
Soldering on the S2 pad:
Æ
the RTXPWS power supply is present on the relevant
pin of the LINK connector.
By default there is no soldering on the S2 pad.
Limitation of the Op-Amp bandwidth:
the PCB houses four empty pads(refer to Fig. 4.1), one for each Op-Amp, which allow to
solder an additional capacitor C
BL
to reduce the bandwidth of the relevant Op-Amp:
•
No
C
BL
capacitor:
Æ
default Op-Amp bandwidth;
•
C
BL
capacitor soldered on the pad:
Æ
the bandwidth of the relevant Op-Amp is
reduced.
By default there is no capacitor soldered on the pad.
