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DMP-8121 Installation Quick Guide

DD4945518
Rev 02
22 June 2022

201 Daktronics Drive Brookings, SD 57006

www.daktronics.com/support

800.325.8766

Page 2 of 6

Key Hole Mounting

1. 

Measure the distance between the two keyholes

(2)

 on the back of the player. Refer to 

Figure 2

.

Note: 

The back of the player will indicate the correct orientation with a 

THIS WAY UP

 arrow. Make 

sure when mounting the player that the arrow points up. Refer to 

Figure 2

.

2. 

Secure the two drywall screws directly to the wall using the measurements from step 1.

3. 

Align the player’s keyhole mounts with the two screws and slide the player down to secure it.

Rack Mounting

1. 

Locate the player rack shelf.

2. 

Attach the player to the rack shelf using the 

two direct screw mounts

(3)

 and screws. Refer to 

Figure 2

.

3. 

Remove the four screws securing the power block 

harness. Refer to 

Figure 3

.

4. 

Place the power block inside the harness.

Note: 

Check that the orientation of the power block has the power cord coming out the back of 

the rack.

5. 

Reattach the power block harness to the rack shelf. Refer to 

Figure 3

.

6. 

Secure the rack shelf to the rack.

7. 

Follow 

Steps 5

 and 

6

 from the

 DMP-8121 Setup

 section to reconnect power.

DMP-8121 Setup

1. 

Unbox components and ensure all are present. Refer to 

Figure 1

 and 

Figure 4

.

2. 

Screw each antenna into the DMP-8121. Refer to 

Figure 4

 

and

 5

.

3. 

Plug the HDMI cable into HDMI port (1)

 on the DMP-8121. 

Refer to 

Figure 5

.

Note: 

Plug HDMI cord into the Protected UHD HDMI port 

(1); do NOT use the unlabeled HDMI port.

4. 

Plug the other end into HDMI port 1 on the display.

Note: 

Identify which HDMI port is used on the display as 

it might be necessary to switch the display to the 

proper input for the unit function.

5. 

Connect Serial cable to DB9 connector on the player 

and RS232 connector on the display if using Display 

Control.

6. 

Plug the power supply cable into the 

power port(3)

 on 

the DMP-8121. Refer to 

Figure 5

.

Figure 3: 

DMP-8121 Rack Mounting

Figure 4: 

Front of DMP 8121

Figure 5: 

DMP-8121 Without Antenna

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