Ratings/Specifications Section 6-1
153
6-1-3 Amplifier Units
Item ZX-LDA11 ZX-LDA41
Measurement period
150
μS
Possible average 
count settings 
(See note 1.)
1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1,024, 2,048, or 4,096
Temperature 
characteristic
When connected to a Reflective Sensor Head: 0.01% FS/
°C
When connected to a Through-beam Sensor Head: 0.1% FS/
°C
Linear output 
(See note 3.)
Current output: 4 to 20 mA/FS, Max. load resistance: 300
 Ω
Voltage output: ±4 V (± 5 V, 1 to 5 V, See note 4.), Output 
impedance: 100 
Ω
Judgement outputs 
(3 outputs: HIGH/
PA S S / L OW )
NPN open-collector outputs,
30 VDC, 50 mA max.
Residual voltage: 1.2 V max.
PNP open-collector outputs,
30 VDC, 50 mA max.
Residual voltage: 2 V max.
Laser OFF input ON: Short-circuited with 0-V 
terminal or 1.5 V or less
OFF: Open (leakage current: 
0.1 mA max.)
ON: Supply voltage short-
circuited or within supply 
voltage 1.5 V
OFF: Open (leakage current: 
0.1 mA max.)
Zero reset input
Timing input
Functions
 Measured value 
display
 Set value/light 
level/resolution 
display
 Scaling
 Display reverse
 Display OFF mode
 ECO mode
 Number of display 
digit changes
 Sample hold
 Peak hold
 Bottom hold
 Peak-to-peak hold
 Self-peak hold
 Self-bottom hold
 Intensity Mode 
(See note 5.)
 Auto-scale 
(See note 6.)
 Zero reset
 Initial reset
 ON-delay timer
 OFF-delay timer
 One-shot timer
 Differentiation/
Sensitivity 
adjustement
 Keep/clamp 
switch
 Direct threshold 
value setting
 Position teaching
 2-point teaching
 Automatic teaching
 Hysteresis width 
setting
 Timing inputs
 Reset input
 Monitor focus
 Setting for non-
measurement
 (A−B) calculations 
(See note 2.)
 (A+B) calculations 
(See note 2.)
 Mutual interference 
(See note 2.)
 Laser deterioration 
detection
 Key lock
 Zero reset memory