XL™ Series
Analog Inputs / 5 Volt Excitation. 11-3
PC Interface View Built In Display Screen
C - Samples: 2000
Samples [2000 ]
This option allows the user to change the number of samples that are averaged from the analog
input when the analog channel is scanned. The user can change the number of samples to any
number between 10 and 65000. The default value is 2000 which takes just less than a second for
the 2000 readings to be measured and averaged together and return a result. If a large number of
samples are selected, the scan process for that particular analog channel will take longer, whereas
if the number of samples selected is a small number, the scan process will be much quicker
allowing more frequent scanning.
PC Interface View Built In Display Screen
D - Range: 5.0 V
Range [5.0 V]
All four analog input channels have a 0.0 to 5.0 Volt input range. A 0.0 to 500 mV range is also
available on channel 1 on older units (PCB Rev 2.2 and older) and on all channels on newer
boards, PCB rev 3.1 and newer. This 500 mV range is for sensors that produce a low level
output voltage less than 500 millivolts.
PC Interface View Built In Display Screen
X - Diff Mode: Off
Differential Md [Off]
Note:
This mode is only available on PC board rev. 3.1 and newer (hardware rev. N and newer).
There are some analog sensors that send back a voltage on a single line that is referenced to
ground. These are called single ended sensors and are the simplest to work with. A simple wind
direction sensor that uses a continuous turn potentiometer is a good example of a single ended
sensor. This sensor would be used with the differential mode turned off.
A differential sensor will have two signal lines referenced to each other, not to ground. A strain
gauge would be an example of a differential sensor. In this case the differential mode would be
turned on and the two signal lines would be connected to analog input 1 and 2. Now the reading
returned from the sensor is the difference between the two analog inputs.
When the differential mode is enabled the voltage value returned for channel 1 is the voltage
difference between channel 1 and 2 and does not matter where the voltage level is with respect to
ground. The value returned for channel 2 will be the same as that returned for channel 1.
Summary of Contents for H-350XL
Page 1: ...XL Series Models H 350XL H 500XL H 510XL H 522 H 522 Plus Owner s Manual ...
Page 30: ...2 16 Hardware Options and Installation XL Series ...
Page 42: ...3 12 Using The Built In Keypad Display XL Series ...
Page 46: ...4 4 PC Menu Interface Operation XL Series ...
Page 58: ...5 12 Miscellaneous System Setup XL Series ...
Page 66: ...6 8 Serial Port Options XL Series ...
Page 74: ...7 8 System Configuration Files XL Series ...
Page 84: ...8 10 System Status Menus Options XL Series ...
Page 88: ...9 4 Scanning Options XL Series ...
Page 156: ...15 12 Logging Options XL Series ...
Page 198: ...16 42 Operation with the GOES Radio XL Series ...
Page 216: ...19 6 Alarm Call Out XL Series ...
Page 234: ...21 8 Operation with the H 355 Smart Gas System XL Series ...
Page 246: ...22 12 Functions XL Series ...