Manual
Table Of Contents
- Important Safety Instructions
- Legal Disclaimer
- Limited warranty
- 1. Introduction
- 2. TC Icon software installation
- 3. Controls and Connectors
- 4. Overview
- 5. Setting up
- 6. Quick Setup
- 7. Basic operation with the TC Icon software
- 8. Using the Library
- 9. TC Icon Setup
- 10. Using Reverb TwentyFour
- 11. Main page
- 12. Grid page
- 13. Setup page
- 14. Rev page
- 15. Trim page
- 16. Factory presets
- 17. System/ Remote
- 18. Acoustics Enhancement
- 19. Specifications
17. 3 GPIO Technical specications
The General Purpose Input/Output (GPIO) connector on the Reverb TwentyFour
rear panel is congured as follows:
Pin No Function
1 GPO 1, contact 1
2 GPO 2, contact 1
3 GPI 2
4 GPI 4
5 3V3 output, 100 mA max
6 GPO 1, contact 2
7 GPO 2, contact 2
8 GPI 1
9 GPI 3
10 3V3 output, 100 mA max
11 Ground
12 Reserved
13 Ground
14 Ground
15 Reserved
The 3V3 output (presented on 2 pins) can be used for an external GPIO network
as described below. It is current-limited to 100 mA.
Each of the two GPOs consist of a oating internal relay than can either
be set open (this is the default setting) or closed. Each relay can handle
200 mA / 24 V AC/DC max. The relays can be used to turn on or o external LEDs,
with the assignment selection coming from the TC Icon software menu Frame/
System/Remote/GPO.
The four GPI inputs are DC-coupled 0 to +3V3 inputs. Inside the Reverb
TwentyFour, there are 100 kOhm resistors that connect the GPI inputs to the
+3V3 power supply. When nothing is connected to the GPI input, the input
voltage is +3V3V. A resistor network can be used to pull down the voltage as
suggested in the 3 gures below:
GPI installation
Selection between up to 8 presets is achieved by feeding a DC voltage to the
GPIO D-SUB connector. The input voltage is compared against voltage windows
that correspond to certain presets. Between the valid voltage windows, invalid
windows have been inserted to protect against erratic operation. The processor
constantly monitors the GPI input, and only if several consecutive measurements
point to the same, valid voltage window, a recall is performed. The voltage
windows are chosen to enable easy “binary relay encoding” as shown in the
3 small schematics below. If long cable runs are required, you may need HF
decoupling using a ceramic capacitor across the D-SUB GPI and GROUND pins.
For maximum detection precision and maximum tolerance against cable induced
noise/hum please use the calibration tool in the TC Icon application to set the
“HI” and “LO” thresholds of the GPI voltage range.
• Setup "1 of 2"
• Setup "1 of 4" (use 1% resistors)
• Setup "1 of 8" (use 1% resistors)
43 REVERB TWENTYFOUR Owner’s Manual