Technical Handbook

Table Of Contents
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1 AC-level measurement input
3 Differential Analog inputs
8 Auxilliary Digital Inputs/Outputs
Block Diagram:
Figure 9-13 CI1210A Block diagram
9.1.12 MB1203A Monitor Section Motherboard
Description:
MB1203A is the backplane for the 19” subrack in the NM 70xx cabinet. MB 1203A is a passive
motherboard that provides all interconnections between the printed circuit board in this sub-
rack and all interface for external signals exept from RF (Coax) cabling.
+
-
A
A
P
S
Modem
MUX
TOUTDOOR
TINDOOR
VACP/N
ANLG3P/N
ANLG2P/N
ANLG1P/N
EAMX*
AIN*
USER_DIG*
FSK*
SD*,CD
VPOW
VBATT
V27P
IIC*
[RS232]
DL_*
[RS232]
DL_*
Over-
Voltage
Protection
*DME*
DME_*
HBK532-1