JTY2
EM-1573 Rev.1
P. 3 / 7
HARDWARE SETTING & CALIBRATION
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FRONT PANEL CONFIGURATION
5
4
3
2
1
0
9
8
7
6
1
2
3
4
5
6
ON
Span Adj.
Detecting Level Adj.
Detecting Level Adj. Pin
Pulse Amplitude Selector
Input Type Selector
Zero Adj.
Sensor Excitation Adj.
Modular Jack
Input Monitor LED PL1
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PULSE AMPLITUDE (rotary switch)
(*) Factory setting
For voltage pulse input, select the pulse amplitude (V p-p)
among the switch positions 0 through 6. For open collector
or two-wire current pulse input, set the switch to 7. DO
NOT SET to 8 or 9. The power supply to the unit must be
turned off when changing the setting.
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DIP SWITCH SETTING
(*) Factory setting
SW6 is not used. The power supply to the unit must be turned
off when changing the setting.
•Input Type
INPUT TYPE
SW1
SW2
SW3
SW4 thr. 6
Open collector (*)
ON
OFF
ON
OFF
Voltage pulse
OFF
OFF
ON
OFF
Two-wire current pulse
OFF
ON
ON
OFF
SW
PULSE AMPLITUDE
MAX. INPUT VOLTAGE
0
50 – 100V p-p
50V
1
25 – 50V p-p
50V
2
10 – 25V p-p
25V
3
5 – 10V p-p
10V
4
1 – 5V p-p
5V
5
0.5 – 1V p-p
1V
6
0.1 – 0.5V p-p
0.5V
7(*)
Open collector or two-wire current pulse
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DETECTING LEVEL
A specific sensitivity scale is applied according to the pulse
amplitude setting. The scaled input voltage is then com-
pared to the preset detecting level.
The scaled H level voltage must be higher than the detect-
ing level so that the pulse state is accurately detected.
SW
PULSE AMPLITUDE
SENSITIVITY SCALE
0
50 – 100V p-p
1/20
1
25 – 50V p-p
1/10
2
10 – 25V p-p
1/5
3
5 – 10V p-p
1/2
4
1 – 5V p-p
1
5
0.5 – 1V p-p
5
6
0.1 – 0.5V p-p
10
7
Open collector or
1
two-wire current pulse
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EXAMPLE 1:
VOLTAGE PULSE with Amplitude 5V p-p, DC Offset 2.5V
Input type: Voltage
Input amplitude: 1 – 5V p-p
The rotary switch and DIP switch are configured as shown
below.
■
EXAMPLE 2:
VOLTAGE PULSE with Amplitude 35V p-p, DC Offset 15V
Input type: Voltage
Input amplitude: 25 – 50V p-p
The rotary switch and DIP switch are configured as shown
below.
ON
1 2 3 4 5 6
Rotary SW
DIP SW
5 6
7
8
9
0
1
2
3
4
ON
1 2 3 4 5 6
Rotary SW
DIP SW
5 6
7
8
9
0
1
2
3
4
• How to Change the Detecting Level
A pulse generator which can simulate the selected input type
and waveforms with appropriate amplitude is required.
1) Set the rotary switch and the DIP switch to an appropriate
input type and pulse amplitude.
2) Connect the positive probe of the pulse generator to the
terminal 5, the negative probe to the terminal 6 of the base
socket.
3) Set the pulse generator output to 1 kHz with the duty ratio
50%, and apply the signal to the transmitter.
4) Connect the Programming Unit to the modular jack and
execute [GROUP 01] [ITEM 06] to show the input duty
ratio.
5) Press [ENTER] key multiple times to adjust the detecting
level until the display shows 50.00
±
0.1%. This adjust-
ment affects the transmitter’s accuracy. Be sure to set the
duty ratio within 0.1% allowances.
6) Confirm that the input monitor LED (PL1) is ON (it should
actually be flashing in 1 kHz). If the LED does not turn on,
the detecting level may be out of the pulse amplitude
range. Change the detecting level again.
