RC Systems ViewSmart 1600+, Operation Manual

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UM-1097
Revision B 54
C h a n n e l 3 8 C o n f i g
A l a r m 2
A l a r m 3
F a u l t A l a r m
D a t a F r o m
L i n e a r i z e
C o n f i g u r e ~
~
~
~
~
~
A l a r m 1 ~
8 0 0
4 0 0 0
10
B o a r d D e f a u l t
~
C h . 3 8 D a t a F r o m
Mi n R a w
Ma x R a w
F i l t e r S a mp l e C o u n t
L o c a l C a l
Ma r k e r Me n u
S r c A n a l o g I n p u t
Figure 39 Analog Input Data From Menu
To Configure a channel for an Analog 4-20mA or Bridge Input, highlight the Src menu item and press Edit
until Analog Input is selected.
4.6.2.1.1 Min an Max Raw
Min Raw and Max Raw counts entries included in Input Data From: menus define the range of input counts
that provide Measurement Range read-out values. This menu entry is determined by the A/D converter
resolution of the channel’s input. For example, if the input is a 10 bit Modbus® device with zero at 200
counts and 100% at 1000 counts, then this menu’s MIN should be set at 200 and MAX at 1000. If
communicating with the ViewSmart 1600+’s optional 12 bit Analog Input PCB the MIN should be 800 and
the MAX 4000.
If the input device’s resolution is unknown, the live counts variable on the Combination screen displays
actual raw A/D counts currently being read by this channel. This reading may be used to test the input
device for what A/D counts are provided for zero and 100% if these values are unknown. Forcing the input
device to read zero should provide the A/D counts value needed to make this channel’s display also read
zero. Likewise, forcing the input device to read 100% should provide the A/D counts value needed to make
the ViewSmart 1600+ channel’s display also read 100%.
Note: Each
Data From
: item has a matching default Min/Max counts value of 20% to 100% with ± 5%
over/under range applied. If the default value is incorrect for the input device it should be edited.
4.6.2.2 Filter Sample Count
The Filter Sample Count is the number of samples from an Analog Input channel that are averaged
together before displayed. The valid range is 1-40 with the default value of 10. If a channel has a noisy
input the sample rate can be increased causing the noise to average itself out. This higher number of
samples causes the channel to react slower to input.
If an input is reacting to exposure of target gas too slowly, the Filter Sample Count can be reduced as long
as the additional noise is permissible.