Kramer Electronics SL-12 - Manual (Page 9)

6 SL-12 - Overview
# Feature Function
8 K-NET Connector PIN GND is for the Ground connection; PIN B (-) and PIN
A (+) are for RS-485, and PIN +12V is for powering other
units
Note that the SL-12 cannot receive power via the K-NET
connector, but can power other units (but not another
SL-12)
9 RS-485 TERM Switch Slides down for RS-485 termination, slides up for not
terminated
10 K-NET TERM Switch Slides down for K-NET termination, slides up for not
terminated
11 PROG. Switch For service use only
12 12V DC 12V DC connector for powering the unit
13 IR INPUT Built-in receiver
and STATUS LED Accepts IR remote commands (see Section 4.2 )
14 IR INPUT 3.5mm Mini Jack Connect to an external IR receiver (1 and 2)
15 RELAYS LEDs Illuminate when an relay is active (1 to 8)
16 IR LEDs Illuminate when an IR port is active
17 NET LED Illuminates when the Ethernet link is active
18 K-NET LED Illuminates while transmitting over K-NET
19 RS-485 LED Illuminates while transmitting/receiving on an RS-485 port
20 RS-232 (Tx/Rx) LEDs Illuminate while transmitting/receiving on an RS-232 port
(1 to 4)
21 GPI/O LEDS Illuminate while transmitting/receiving on a general
purpose I/O port (1 to 4)
22 PROGRAM USB Connector Connect to a computer for unit configuration and firmware
upgrading