Monarch Instrument SPLS-5 Series - Manual (Page 9)

6
FUNCTIONS AND OPERATION
SPS Interface Module
The SPS Interface Module (SPS-IM) provides power to the input sensor,
receives and processes the return pulse signal, and provides a switch selectable
positive going 0 to 5 Vdc or negative going 5 to 0 Vdc TTL pulse train
trigger output on a BNC connector. Connections and operation are common
to all SPS models. Fully charged internal NiCad batteries will typically
provide six to eight hours of continuous operation. In addition, the SPS
system can be operated continuously on external power by use of the ac
recharger/power supply or dc power cable provided.
NOTE: Before using, charge the internal NiCad batteries for a full 16 hours
using the recharger/power supply or cable provided. See
Recharging the Batteries section on page 7.
Connections
Connect the input sensor via the 1/8” [3.5 mm] phone plug to the mating
connector on the SPS-IM. This sensor may remain connected even
when recharging the internal batteries of the SPS-IM.
Connect the output signal cable to the BNC connector on the opposite
end of the SPS-IM and to the external equipment to be triggered. If
operating from the recharger/power supply, connect the recharger to
the connector marked “External DC” and connect the wall unit to the
appropriate power source. When using the CA-SPS12 cable to provide
5 to 15 Vdc, connect the Black lead to (+) and the Black with White
Stripe lead to (-) dc power.
NOTE: When not in operation, do not leave the SPS-IM continuously
connected to a recharger/power supply or 5 to 15 Vdc external
power for more than 16 hours as this may damage the batteries.
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The pulse signal on the connector marked “Output” provides a sharp
leading edge for reliable and repeatable triggering of the connected
device. This output has a low impedance (50 ohms) and is capable of
driving a hundred feet of coax cable. Be sure to select the direction (0
to 5 Vdc or 5 to 0 Vdc) of this signal to provide the required polarity of
the leading edge to properly trigger the connected equipment.
SPLS-5 Series - SPS with Remote Laser Sensor
The SPLS-5 consists of the SPS-IM Interface Module described on pages
6 and 7, an RLS-5P Remote Laser Sensor with eight foot cable and ¼-20
mounting bushing, and a R-5 (115 Vac), R-6 (230 Vac) or CA-SPS12 (5 to
15 Vdc) external power connection. One foot of T-5 Reflective Tape is
also supplied.
NOTE: Be sure the power on the battery interface module is OFF before
connecting the Remote Laser Sensor.
RLS-5P
The RLS-5P Remote Laser Sensor is capable of detecting a reflected
pulse at distances of up to 50 feet [15 meters] and angles up to 75
degrees from a reflective tape target. In some applications, reflective
tape is not required; the Laser Sensor will operate from contrasting
colors. Due to the highly focused illumination provided by a collimated
laser and the resultant narrow pulse returned to the sensor, it is critical
that the Laser Sensor be carefully and securely mounted by means of
the ¼-20 threaded bushing provided in order to achieve reliable results.
This ¼-20 mounting bushing can also be used to ground the
Laser Sensor.
Whenever possible, a 1/2" [13 mm] square piece of T-5 Reflective
Tape should be applied to a clean area on the rotating object. The
Laser Sensor should be mounted and optically aligned to illuminate the
reflective tape target once per revolution. It is recommended that the