User's Manual
KRAMER: SIMPLE CREATIVE TECHNOLOGY 
Connecting the VP-725XLA Presentation Switcher / Scaler 
16 
6.2  The RGBS and RGsB PINOUTs 
Table 3 defines the input progressive
1
 and interlaced
2
 RGBS and RGsB 
pinouts: 
Table 3: RGBS and RGsB PINOUTS 
Input  Color Space  PINOUT 
VGA  RGsB  Red to PIN 1 
Green + sync, to PIN 2 
Blue to PIN 3 
  RGBS  Red to PIN 1 
Green to PIN 2 
Blue to PIN 3 
Hs (H and V) to PIN 13 
YUV  YPbPr  Green + sync to Y 
Blue to Pb 
Red to Pr 
6.3  Connecting to the VP-725XLA via RS-232 
You can connect to the unit via a crossed RS-232 connection, using for example, 
a PC. A crossed cable or null-modem is required as shown in method A and B 
respectively. If a shielded cable is used, connect the shield to pin 5. 
Method A (
Figure 4)—Connect the RS-232 9-pin D-sub port on the unit via a 
crossed cable (pin 2 to pin 3, pin 3 to pin 2, and pin 5 to pin 5) to the RS-232 9-
pin D-sub port on the PC. 
Note: There is no need to connect any other pins. 
Figure 4: Crossed Cable RS-232 Connection 
Hardware flow control is not required for this unit. In the rare case where a 
controller requires hardware flow control, short pin 1 to 7 and 8, and pin 4 to 6 
on the controller side. 
Method B (
Figure 5)—Connect the RS-232 9-pin D-sub port on the unit via a 
straight (flat) cable to the null-modem adapter, and connect the null-modem 
adapter to the RS-232 9-pin D-sub port on the PC. The straight cable usually 
1 A display mode in which all the horizontal lines of an image are displayed in a single frame (one field) 
2 A display mode in which a frame consists of two separate fields with the first field consisting of odd horizontal lines and the 
second field even horizontal lines 










