Functional description
Chapter 4
MN051_v1.0.5
2-Axis Laser Beam Deflection Units
15
For deflection units with digital interface only
4.4
Digital interface
The deflection unit is connected to a RAYLASE control card using the 25-pin D-SUB connect-
or. All signals are compatible with RAYLASE's extended function XY2-100 standard.
If the deflection unit is also fitted with a 9-pin D-SUB connector, the power supply to the de-
flection unit comes from this additional connector. Deflection units that are not fitted with a 9-
pin D-SUB connector are powered by the digital interface. Refer to the following connection
table:
J1
PIN
Signal
PIN
Signal
1
13
25
14
25 PIN D-SUB
1
I
-SENDCLOCK
14
I
+SENDCLOCK
2
I
-SYNC
15
I
+SYNC
3
I
-X CHANNEL
16
I
+X CHANNEL
4
I
-Y CHANNEL
17
I
+Y CHANNEL
5
I
-Z CHANNEL
18
I
+Z CHANNEL
6
O -HEAD-STATUS
19
O +HEAD-STATUS
7
I
-P-DAC CHANNEL
20
I
+P-DAC CHANNEL
8
nc
21
nc
9
Nc
1
+VSS
1
22
nc
1
+VSS
1
10
nc
1
+VSS
1
23
GND
11
GND
24
GND
12
nc
1
-VSS
1
25
nc
1
-VSS
1
13
nc
1
-VSS
1
---
---
I= Diff. Input, nc = Not connected (not used) O = Diff. Output
1
) If there is no separate 9-pin D-SUB power input, the power supply is provided by the digital interface.
The power supply must be provided by the OEM customer.
Specifications
Diff. Input-, Diff. Input+
-
Diff. Output-, Diff.
Input voltage
max. ±24.0V
Output low
max. 0.6V
max. 40mA
Input threshold
200mV
Output high
min. 2V @ 50Ω max. 40mA
Hysteresis
typ. 45mV
ESD protection
±10kV
Input impedance
120Ω
ESD protection
±15kV
Power supply
Designation Voltage
Current
Residual rip-
ple
Noise
-VSS
-15V to -18V
2.5A
≤100mV
≤0.5% DC at
30MHz
+VSS
+15V to +18V
2.5A
