PlugTech MBC-DPIQ User manual

MBC-DPIQ Controller Operating Instruction
（1）Product Structure
No.
Name
Describe
1
Photodiode
External Optical Feedback Input
2
NC
No connection is required
GND
Ground
X-A X-C pins
Modulator’s Internal photodiode Input
Y-A Y-C pins
Modulator’s Internal photodiode Input
3
Power Connector
Controller’s power supply connector
4
RST pin
Operation for resetting controller
5
XPLRI pin
Operation for XI-channel polar selection
XPLRQ pin
Operation for XQ-channel polar selection
XPLRP pin
Operation for XP-channel polar selection
YPLRI pin
Operation for YI-channel polar selection
YPLRQ pin
Operation for YQ-channel polar selection
YPLRP pin
Operation for YP-channel polar selection
6
3.3 pin
3.3V reference voltage of UART interface
GND TX RX pins
UART interface for communication
7
YQp YQn pins
Controller’s XI-channel bias Output
YIp YIn pins
Controller’s XQ-channel bias Output
XQp XQn pins
Controller’s XP-channel bias Output
8
XIp XIn pins
Controller’s YI-channel bias Output
YPp YPn pins
Controller’s YQ-channel bias Output
XPp XPn pins
Controller’s YP-channel bias Output
9
M2 Mounting Hole
Controller’s mounting hole
10
LED
Constantly on: Working under tracking state
On-off or off-on every 0.2s:Initializing and searching for controlling point
On-off or off-on every 1s: Controller’s feedback input power is too weak
On-off or off-on every 3s: Controller’s feedback input power is too strong
6
3
4
5
10
1
2
8
7
9
Figure1. Product Structure
F
ig

（2）Product Operating and Storage Information
（3）System Setup Instruction
Figure 2. System diagram with controller’s on-board photodiode Figure 3. System diagram with modulator’s internal photodiode
Since there is 'Bias Shift' in some of DPIQ modulator's integrated photodiode, it may cause a bad performance in modulation systems. It is
suggested to use bias controller's on-board photodiode as feedback input, which is shown in Figure 2.
Parameter
Min
Typ
Max
Unit
Positive power voltage
+14.5
+15
+15.5
V
Positive power current
20
30
mA
Negative power voltage
-15.5
-15
-14.5
V
Negative power current
8
15
mA
Input optical power
-30
-8
dBm
Operating temperature
-10
50
℃
Storage temperature
-20
80
℃

Depending on the different systems, the controller can be connected to the system as shown in Figure 2 or Figure 3. Here are the setup steps：
Step2. Controller’s output connection
⚫Connect controller’s YQp pin to modulator’s Bias-QYp pin, Connect controller’s YQn pin to modulator’s Bias-QYn pin.
⚫Connect controller’s YIp pin to modulator’s Bias-IYp pin, Connect controller’s YIn pin to modulator’s Bias-IYn pin.
⚫Connect controller’s XQp pin to modulator’s Bias-QXp pin, Connect controller’s XQn pin to modulator’s Bias-QXn pin.
⚫Connect controller’s XIp pin to modulator’s Bias-IXp pin, Connect controller’s XIn pin to modulator’s Bias-IXn pin.
⚫Connect controller’s Yp pin to modulator’s PHASE-Yp pin, Connect controller’s Yn pin to modulator’s PHASE-Yn pin.
⚫Connect controller’s Xp pin to modulator’s PHASE-Xp pin, Connect controller’s Xn pin to modulator’s PHASE-Xn pin.
Setp1. Setup controller’s feedback input
Note: User should only choose one of the feedback method between controller’s on-board photodiode or modulator’s internal photodiode.
（1）Using controller’s on-board photodiode as feedback input：
Choose an appropriate optical coupler to ensure the controller’s feedback optical power is within the range indicated in the Product Operating
Information table. For example, if the laser output power is 10dBm and the modulator’s insertion loss is 5dB, then the maximum optical output of the
modulator is about 5dBm. In this situation, user can choose a 1:99 coupler and the 1% port output power is about -15dBm, which is within the range
of controller’s input range. Then user can connect the 1% port to controller’s on-board photodiode as feedback input and the 99% port is the system’s
output.
（2）Using modulator’s internal photodiode as feedback input：
⚫Connect modulator’s PD-Y Anodepin to controller’s Y-A pin.
⚫Connect modulator’s PD-Y Cathode pin to controller’s Y-C pin.
⚫Connect modulator’s PD-X Anodepin to controller’s X-A pin.
⚫Connect modulator’s PD-X Cathode pin to controller’s X-C pin.
Step3. Controller’s power connection
⚫Note：V+ connect to +15V DC supply, V- connect to -15V DC supply
⚫Controller can be turned on after the RF source and laser output is stable.
⚫After the controller is turned on, if the LED is lighted, that means the controller starts to work.

DPIQ Modulator’s Pins
Controller’s Pins
Connection Status
controller’s on-board photodiode
modulator’s internal photodiode
1-6
DC Input(Bias-QYp)
Group 1
YQp
connect
connect
DC Input(Bias-QYn)
YQn
connect
connect
DC Input(Bias-IYp)
YIp
connect
connect
DC Input(Bias-IYn)
YIn
connect
connect
DC Input(Bias-QXp)
XQp
connect
connect
DC Input(Bias-QXn)
XQn
connect
connect
7-12
DC Input(Bias-IXp)
Group 2
XIp
connect
connect
DC Input(Bias-IXn)
XIn
connect
connect
DC Input(PHASE-Yp)
Yp
connect
connect
DC Input(PHASE-Yn)
Yn
connect
connect
DC Input(PHASE-Xp)
Xp
connect
connect
DC Input(PHASE-Xn)
Xn
connect
connect
13-18
NC
Group 3
NC
Not connected
Not connected
PD-Y Anode
Y-A
Not connected
connect
PD-Y Cathode
Y-C
Not connected
connect
Ground
GND
connect
connect
PD-X Cathode
X-C
Not connected
connect
PD-X Anode
X-A
Not connected
connect

（4）Operating manual
⚫Set MBC-DPIQ’s YI-channel polarity reversal
（1）Connect controller’s output and feedback input properly
（2）Insert jumper between YPLRIpins.
（3）Turn on or reset the controller
⚫Set MBC-DPIQ’s YP-channel polarity reversal
（1）Connect controller’s output and feedback input properly
（2）Insert jumper between YPLRPpins.
（3）Turn on or reset the controller
⚫Set MBC-DPIQ’s YQ-channel polarity reversal
（1）Connect controller’s output and feedback input properly
（2）Insert jumper between YPLRQpins.
（3）Turn on or reset the controller
（2）
⚫Controller Reset：Insert jumper and pull out after 1 second
⚫Set MBC-DPIQ’s XI-channel polarity reversal
（1）Connect controller’s output and feedback input properly
（2）Insert jumper between XPLRIpins.
（3）Turn on or reset the controller
⚫Set MBC-DPIQ’s XP-channel polarity reversal
（1）Connect controller’s output and feedback input properly
（2）Insert jumper between XPLRPpins.
（3）Turn on or reset the controller
⚫Set MBC-DPIQ’s XQ-channel polarity reversal
（1）Connect controller’s output and feedback input properly
（2）Insert jumper between XPLRQpins.
（3）Turn on or reset the controller
（1）

（5）Cautions
⚫Do not reverse the V+ and V- power pins, otherwise it will cause permanent damage to the controller.
⚫ESD sensitive, please pay attention to human static electricity when operating.
⚫Please provide the correct power supply voltage to avoid interfering with the operation of the controller or damaging it.
⚫It is recommended that the ripple of the power supply be less than 120mV.
⚫Please turn on the bias controller after the laser and RF output are stable.
⚫UART Command Control（Optional, available for Version A）：
（1）Connect controller’s output and feedback input properly.
（2）Use UART accessories to connect the controller to PC as shown
in Figure4.
（3）Turn on bias controller.
（4）Use GUI software or Matlab script to operate the UART function.
Figure 4. UART Connection

（6）PowerBoard Operation Instruction（Optional）
（1）Production Instruction
标识
名称
描述
1
M2 Mounting Hole
Powerboard’s Mounting Hole
2
OUTPUT
Output voltage ± 15V
3
Switch
Control Powerboard’s Status
4
LED
Show Powerboard’s Status
5
EARTH pin
Ground pin
6
INPUT1
+5V Input1
7
Input selection port
Connection between input 1 and + 5V：
INPUT1 as the input
Connection between input 2 and + 5V：
INPUT2 as the input
8
INPUT2
+5V Input2
（2）Operation manual
2
3
4
1
5
6
7
8
Step1：Choose Input Port（User should only choose one of the input port between INPUT1 and INPUT2）
1. Choose INPUT1
⚫Insert jumper between +5V pin and INPUT1 pin.
⚫Provide +5V voltage for INPUT1.
2. Choose INPUT2
⚫Insert jumper between +5V pin and INPUT2 pin.
⚫Connect the adapter’s output to INPUT2.
Step2：Powerboard’s output connection
⚫Connect powerboard’s output to controller’s supply connector.
Step3：turn on Powerboard
⚫Turn the switch to the "ON" direction. if the LED is lighted, that
mean powerboard start to work.

Version
Content
Date
1.0.0
First Release
2020/11/19
1.0.1
System Setup Instruction correction
2020/12/23
1.0.2
Add powerboard’s operation Instruction
2021/1/12