
8.5.2.9
TVBAS2B Buffered Outputs
With the TVBAS2B, each channel provides additional outputs other than the standard 37-pin connection. The signal output is
buffered from the signal used by the I/O module to prevent any corruption caused by third-party hardware connected to the
output.
Each channel is output on a BNC connector with 10 kilo-ohms between the buffer out and BNC signal pin and 10 kilo-ohms
isolation between signal low and the control power common, PCOM.
Each channel is also output through a 25-pin or 9-pin connectors JA1, JB1, JC1 and JD1 designed to interface with the Bently
Nevada 3500 monitoring system. The TVBA buffered source impedance is approximately 40 ohms.
Jumper, JPxB
The jumper, JPxB where x = 1 through 14 is used to configure the output for either seismic outputs with a -11 V dc bias
voltage added to the velocity signal or positioned to output Proximitor, Velomitor or accelerometer with integrated output
signals.
8.5.2.10
Bently Nevada Buffered DB Connector Points
Signal Name
Connector
Pin #
BPR01
JA1
3
PCOM
JA1
2
BPR02
JA1
7
PCOM
JA1
6
BPR03
JA1
11
PCOM
JA1
10
BPR04
JA1
23
PCOM
JA1
24
BPR05
JB1
3
PCOM
JB1
2
BPR06
JB1
7
PCOM
JB1
6
BPR07
JB1
11
PCOM
JB1
10
BPR08
JB1
23
PCOM
JB1
24
BPR09
JC1
3
PCOM
JC1
2
BPR10
JC1
7
282
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GEH-6855_Vol_II Mark VIeS Functional Safety Systems Volume II
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