|
Operation Guide HXSC(Khz)P series
signal conditioners.
|
Yellow
|
Blue
|
Mode
|
|
Grounded
(0V)
|
Grounded
(0V)
|
Auto
|
|
Grounded
(0V)
|
Open
(5V)
|
Direct
|
|
Open
(5V)
|
Grounded
(0V)
|
Pulse
|
|
Open
(5V)
|
Open
(5V)
|
Auto
|
If the yellow and blue wires are both
grounded or open when the device is powered on, the device enters Auto mode.
In Auto mode the device continuously transmits a burst of 30 pulses at the (Khz)
specified 25khz, 40khz, 80khz or 125khz. In manual modes, the user processor
has direct control and access to the signal conditioning hardware.
|
Device
|
Rx-Delay
|
Duration
|
Burst Duration
|
|
HXSC25P
|
8mS
|
0.131
S
|
1200
uS
|
|
HXSC40P
|
5mS
|
0.131
S
|
750
uS
|
|
HXSC80P
|
3mS
|
0.033
S
|
375
uS
|
|
HXSC125P
|
2mS
|
0.033
S
|
240
uS
|
The RX-delay represents the time the
receiver is disabled during the burst transmission. This time includes the
burst duration. In other words, the Rx-delay sets the limit to how close an
object can be to the sensor for detection.
The sample duration sets the
acquisition cycle repetition rate, naturally at 0.033S the rate is set at 30
samples per second.
|
Wire Color
|
Wire Function
|
Electrical Specification
|
|
RED
|
Supply Line
|
5-16 Vdc
|
|
GREEN
|
Return Line
|
0 Vdc
|
|
BROWN
|
Comparator Out
|
0-5V *
|
|
ORANGE
|
Analog Signal Out
|
+/-5V *
|
|
PURPLE
|
Analog Level Out
|
0-5V *
|
|
BLUE
|
Pulse Drive
|
0-5V *
|
|
YELLOW
|
Direct Drive
|
0-5V *
|
* Current in or out of the wire must
stay below 20mA
Analog Signal Out:
is fed through a 100nF capacitor, so the signal will oscillate around user
specified reference.
Analog Level Out:
The voltage level on this wire is directly proportional to the distance from
the sensor to the object responsible for first echo.
Pulse drive:
if the Yellow wire (Direct Drive) is high (~5V) and the Blue Wire (Pulse
Drive) is low (~0V) during the power up sequence, the device goes into Pulse
Drive Mode. Once in Pulse drive mode, the device will emit pulse train at the
frequency specified by (Khz) while the blue wire is high. The pulse train is
terminated while the blue wire is low.
Direct Drive:
If the blue wire is high (~5V) and the Yellow wire is low (~0V) during device
power up sequence, the device will enter Direct Drive Mode. In this mode the
user processor can control the pulse train and it’s frequency.
Note:
When
using transceivers then connect the shield and core of the Tx and Rx cables
together, and connect both to the core and shield of the transceiver. In case
hxn125 or hxn80 are being used, the red wire connects to the core and the
black wire connects to the shield. Best performance is achieved when the
exposed core is as short as possible, and it is a good idea to ground or fix
the sensor chassis. Performance will improve significantly if the whole
assembly is enclosed in a metal container where the chassis is fixed to ground
(shield) potential. |