PlugTech MBC-HF User manual

MBC-HF Controller Operating Instruction
（1）Product Structure
No.
Name
Describe
1
Photodiode1
External Optical Feedback Input ( Laser channel )
2
Photodiode2
External Optical Feedback Input ( Modulator channel )
3
Ca An pins
Modulator’s Internal photodiode Input
4
Power Connector
Controller’s power supply connector
5
RST Pin
Operation for resetting controller
6
PLR Pin
Operation for polar selection
7
3.3 Pin
3.3V reference voltage of UART interface
GND TX RX Pins
UART interface for communication
8
OUT GND Pins
Controller’s 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
Figure1. Product Structure
（2）Product Operating and Storage Information
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
2
4
mA
Modulator Channel Input optical power
-26
2
dBm
Laser Channel Input optical power
-26
2
dBm
Operating temperature
-10
50
℃
Storage temperature
-20
80
℃
5
6
4
3
1
7
10
2
8
9

（3）System Setup Instruction
Figure 2. System diagram with controller’s on-board photodiode Figure 3. System diagram with modulator’s internal photodiode
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：
Setp1. Setup controller’s feedback input (Laser channel)
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 -10dBm, which is within the range of controller’s input
range. Then user can connect the 1% port to controller’s on-board photodiode as feedback1 input and the 99% port is the modulator’s input.

Step3. Controller’s output connection
⚫Connect controller’s OUT pin to modulator’s DC Bias pin
⚫Connect controller’s GND pin to modulator’s Ground pin
Setp2. Setup controller’s feedback input (Modulator channel)
Note: User should only choose one of the feedback method between controller’s on-board photodiode or modulator’s internal photodiode.
a) Using controller’s on-board photodiode as feedback input：
Choose an appropriate optical coupler to ensure the modulator channel feedback optical power are 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 feedback2 input and the 99%
port is the system’s output.
b) Using modulator’s internal photodiode as feedback input：
⚫Connect modulator’s PD-C（Photodiode Cathode）pin to controller’s Ca pin.
⚫Connect modulator’s PD-A（Photodiode Anode）pin to controller’s An pin.
Step4. 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.

（4）Operating manual
⚫Set MBC-HF to work in Q+ point
（1）Connect controller’s output and feedback input properly
（2）Keep PLR pins not connected.
（3）Turn on or reset the controller
⚫Set MBC-HF to work in Q- point
（1）Connect controller’s output and feedback input properly
（2）Insert jumper between PLR pins.
（3）Turn on or reset the controller
⚫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.
⚫Controller Reset：Insert jumper and pull out after 1 second
Figure 4. UART Connection

（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.

（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
Add powerboard’s operation Instruction
2021/1/12