Black Box ACKMOD21R User Manual
724-746-5500 | blackbox.com
724-746-5500 | blackbox.com
Page 33
ACX1MT
Chapter 2: Overview
2.7.3 Status Upgrade Module Digital Audio
The upgrade module digital audio has another multicolor LED on the rear side to indicate the connection status:
CPU module, rear view
CON module, rear view
Figure 2-20. Status upgrade module digital audio.
Table 2-26. LED 1: Digital Audio Status.
LED color
Description
Red
No signal
Cyan
CPU Unit: S/PDIF signal (RCA) available
Violet
CPU Unit: AES/EBU signal (Mini-XLR) available
Blue
CPU Unit: S/PDIF signal (TOSLINK) available
Green
CON Unit: Signal available
2.7.4 Status Upgrade Module USB-HID
The upgrade module USB-HID has three LEDs on the rear side to indicate the connection status:
CPU module, rear view
CON module, rear view
Figure 2-21. Status upgrade modules USB-HID.
Table 2-27. LED 1, 2, and 3: Status.
Position
LED
Status
Description
1, 2
Device LED (orange)
Off
No USB-HID device or not supported; USB device connected
Flashing fast
USB-HID device active
On
USB-HID device ready or DKM Modular Extender in command mode
3
Status LED (orange)
Off
• No power supply voltage
• CPU Unit: DKM Modular Extender in command mode or no connection
• CON Unit: Keyboard in command mode
Flashing slowly
CON Unit: DKM Modular Extender in command mode or no connection
Flashing fast
Operating status