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Quick Guide: Digit Display Installation with FLR 1500 Control Kit  
 

1 of 5

 

Note

: This guide begins after the displays have been physically mounted. 

General Radio Setup 

1.

 

Choose a location for installation with a clear-line-
of-sight between the radios, with no obstructions or 
interference. Refer to 

Figure 1

2.

 

Set the same channel inside both radios. Refer to the 
radio manual for additional information. 

 Server Radio Installation 

1.

 

Mount the J-box/signal converter near a 120 VAC 
outlet. 

2.

 

Mount the server radio on the outside of the 
building within line of sight of the client radio. 

3.

 

Connect power/signal cables as follows. The letter 
for each step is noted in 

Figure 2

. Grease each signal 

jack with electrical contact grease before making the 
following signal connections. 

a.

 

At the J-box, connect the 6-conductor, 18 AWG 
stranded cable at the terminal plug labeled “RS-
422 to Radio.” 

b.

 

Run the cable from the J-box through conduit to 
the server radio. The maximum distance from 
the J-box to the server radio is 1,000 feet (450 
meters). 

c.

 

At the server radio, connect the wires to the 
terminal plug labeled “TB2 (RS-422 IN)” as 
shown in 

Figure 2

. The cable is pinned one-to-

one. Refer to the table below. 

J-Box Wire 

Server 

Radio

Power Green 

Power 

422 RX-P 

Blue 

TX-P 

422 RX-N  White 

TX-N 

422 TX-P 

Brown 

RX-P 

422 TX-N 

Black 

RX-N 

Ground Red Ground 

 

Figure 1: Clear Line-of-sight 

 

Figure 2: Server Radio Connections 

 

Figure 3: Client Radio Connections 

 

PO Box 5128  201 Daktronics Dr  Brookings SD 57006-5128 

tel 605-697-4036 or 800-325-8766  fax 605-697-4700 

www.daktronics.com

 

DD1399086 Rev 2 
12 April 2010 

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