Figure 11. Balanced Audio Cable
Table 18. Analog Input for MPEG-2, MPEG-4 and WM Encoders
Configuration | Two channel Stereo |
| |
|
|
| |
Input Connectors | 2X | TRS Stereo | |
|
|
| |
Input Configuration | Balanced or Unbalanced |
| |
|
|
| |
| Normal Mode | Alternate Mode (High Headroom) | |
|
|
| |
Input Load Impedance | 100k Ohms | 100k Ohms | |
|
|
|
|
Nominal Input level | 1.0 | Vpp - Unbalanced | 1.0 Vpp - Unbalanced |
| 0.5 | Vpp - Balanced | 0.5 Vpp - Balanced |
|
|
|
|
Maximum Input level | 4.0 | Vpp - Unbalanced | 8.0 Vpp - Unbalanced |
| 2.0 Vpp - Balanced | 4.0 Vpp - Balanced | |
|
|
| |
Dynamic Range | 94dB | 88dB | |
|
|
| |
Encoder Gain Range | +7 to | +12 to | |
|
|
| input level for certain gain adjustments, |
|
|
| the signal could be distorted at the input |
|
|
| to the |
|
|
| |
Channel Separation | 83dB | 83dB | |
|
|
| |
Head Room | 12dB | 18dB | |
|
|
| |
Noise Floor (Input | |||
Grounded) |
|
|
|
|
|
|
|
The Audio Out ports are also designed for use with a 1/8" mini plug. Cables are available for both balanced and unbalanced applications from electronics specialty stores (e.g. Radio Shack) and from VBrick. Table 19 and Table 20 outline the specifications of the output audio levels.
Table 19. Analog Audio Output for
Configuration | Two channel Stereo |
|
|
| |
Output Connectors | 2X TRS Stereo | |
|
|
|
Output Configuration | Balanced or Unbalanced |
|
|
|
|
| Normal Mode | Alternate Mode (High Headroom) |
|
|
|
70 | © 2008 VBrick Systems, Inc. |