Texmate PC-45X Quick Start Manual

A Versatile Event Counter/Totalizer Featuring 19999 Counts with Overrange Indication, or 9999 Counts with Cascade
Output, Contact Closure or Logic Signal Input, High Contrast LCD, 4-6 V DC Powered with Outputs for User Supplied
NI-CAD Battery Back-Up, Capable of Signal Powered Operation.
DESCRIPTION
Texmate's model PC-45X event counter/totalizer
is a versatile, low cost DC powered LCD meter which
features three user programmable count inputs and
count rates. All count inputs are compatible with open
collector sensing devices. The standard low range
SPST or SPDT dry contact closure rate is 0~6000 CPM
(0~100 CPS). The SPST switch input mode utilizes a low
pass filter and a Schmitt trigger with 15% hysteresis for
debouncing. The SPS T switch input mode which utilizes
an R-S Flip-Flop for debouncing can accept high speed
dry contact closure rates of 0~600,000 CPM (0~10,000
CPS) if the low pass filter is reduced or eliminated. The
PC-45X also accepts 3-30VDC positive going pulses
or AC signal inputs up to 15MHz. A 500mV hysteresis
aids the accurate counting of slow changing waveforms.
Other features include logic controls such as inhibit,
reset, display hold, carry output, overrange output, and
outputs to continuously trickle charge an external user
supplied Ni-Cad battery back-up which will prevent loss
of data in case of intermittent or power-out situations.
The unit is also capable of being programmed for sig-
nal powered operation. There are four programmable
decimal points, and unlimited cascading to achieve
multiples of four digits using two or more PC-45X units.
In this type of operation only the left most meter will
display a fifth digit.
The display hold feature enables the user to latch
the display while the counter continues counting. With-
out affecting the latched display, the counter may be
reset to zero by the reset control or the counting function
may be stopped and started by the inhibit control. When
the Display Hold is released, the data present in the
counter at that time is instantly displayed.
With external logic control, the PC-45X may be
used as a frequency counter, RPM indicator or period
counter. The large 0.48" LCD display has excellent read-
ability in both high and low ambient light conditions,
and its low power consumption 5VDC-2mW or signal
powered operation makes it especially useful in remote
locations.
When PC-45X is programmed for signal powered
operation (9 to 600V p-p @ 400µA), the back-up bat-
tery must be used unless the input signal pulses are
continuous because power is required to maintain the
count logic.
STANDARD 1999 COUNTS EVENT COUNTER
ACCESSORIES: Edge Connector (20 pin solder tabs)
PC-45X(E2)
EVENT COUNTER
SPECIFICATIONS
COUNT INPUTS
SPST Contact Closure:
SPDT Contact Closure:
3-30V AC or DC Pulse:
Open Collector Sensing: All inputs are compatible with open collector
Over Voltage Protection: Pins 6, E & F are protected up to ±100V peak
CONTROLS & OUTPUTS
Reset:
Inhibit Count:
Display Hold:
Carry Output:
Overrange Output:
Display:
Decimal:
Overload Indications:
Back-Up Battery:
Power Requirements:
Operating Temperature:
ORDERING INFORMATION
Order Part No.
PC-45X
CN-L10
Texmate, Inc. Tel. (760) 598-9899
PC-45X
4 1/2 DIGIT
0~6000 CPM (100Hz) with 500Hz Low Pass
filter and Schmitt Trigger set at 15%
Hysteresis
0~6000 CPM (100Hz) with 500Hz Low Pass
filter and R-S Flip-Flop. 0~600,000 CPM
(10kHz) with filter removed
0~500kHz with Schmitt Trigger threshold of
2V and 500mV Hysteresis. If the internal
100kΩ overvoltage protection resistor is
removed the max count is 0~15MHz
sensing devices
overload with internal 100kΩ resistors.
Caution: All other input or control pins are
NOT PROTECTED against High Voltage.
Dry Switch closure to ground or Logic Low "0"
input for min. 3µS resets counter to zero.
(50µA pull-up current is provided).
Dry Switch closure to ground or Logic Low "0"
input will prevent the D flip-flop on the count
input from operating (10µA pull-up current is
provided)
An Open input or Logic High "1" input on this
pin "freezes" the display while the counter
continues to operate independently. A Dry
Switch closure to ground or Logic low "0" input
for min. 3µS updates the display (10µA pull up
current is provided.) For continuous display of
the counter input the display hold function
should be connected to ground
Internal solder pad SP2 provides a logic signal
ouput that occurs each 10,000 counts for cas-
cading the count in 4 digit mutilples
Internal solder pad SP1 goes to Logic High "1"
when the count exceeds 20,000 counts
0.48" LCD Max. 19999
User programmable to 4 positons
All digits blank except decimal points
200µA output is provided to trickle charge a
user supplied 3.6V Ni-Cad battery
Regulated 4VDC to 6VDC at 400µA or Signal
Powered
-20˚C to +60˚C
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