User Manual

ULN-8 Users Guide
100
If any of these items are missing from your package when you open it, please contact Metric Halo or your
dealer immediately for assistance.
6-pin to 6-pin IEEE 1394 cables are available from MH Direct.
Using the ULN-8 Hardware
ULN-8 Front Panel
Figure 8.9: ULN-8 Front Panel
The front panel provides ULN-8 system control and status at a glance:
• Monitor- Select the Monitor Controller input or output
• Preset- Recall one of the eight stored system configurations
• Input- Step through the available input sources
• Link- Link multiple input and output encoders for stereo or multichannel use
• +48- Enable phantom power, per channel
• U/M- User mode (for future expansion)
• Power switch for rear 4 pin XLR connector (jumper defeatable)
• Sample Rate (nominal 44.1, 48, 88.2, 96, 176.4 or 192KHz)
• The Sample Rate is determined from the currently selected clock source so it will accurately indicate
the current sample rate, even when the clock source is being provided by an external device.
• Clock source:
• Internal indicates that the system is internally clocked
• Wordclock indicates that system is being clocked from the wordclock input
• 256x WC indicates that the system is being clocked from a 256x clock at the wordclock input
• Digital In indicates that the system is being clocked from the selected digital input
• Control Mode — Indicates what parameters the encoders are modifying:
• I/O Trim — Indicates whether you are modifying input or output channel gain.
• Input Status- Indicates mic input, line input or mic s/r by channel.
• Encoders- Eight detented encoders for multipurpose control, with push-switches.
• 15-segment metering for the 8 analog inputs and outputs using multicolor LEDs, which also display gain
values during encoder use. The meters are fast PPM peak reading meters with auto-resetting peak holds.
• SysLock — Indicates that the system clock recovery circuit is properly locked to the selected clock
source. If this light is not illuminated, the ULN-8 will not be locked to a clock and will revert to its
failsafe internal clock source. Even if the Locked light is not illuminated, the actual sample rate will still
be indicated on the front panel display.
• FireWire — Indicates that the ULN-8 has been successfully connected to a FireWire bus and has detected
the isochronous cycle required to transmit and receive audio.
• Signal present indicators for AES input and output, as well as digital lock and cable select button and
indicators.
• Monitor Control Section:
• The Mute and Dim buttons provide instant access to simple level control for the selected Monitor
path or headphone output. The Mute button provides a quick, tactile “panic switch” which mutes