Logitek Electronic Systems Pilot - Manual (Page 14)

Earth Lug
An earth lug is provided at the back of the frame for connection to station ground. The console also
is grounded through the power cord.
Frame to JetStream
The Pilot Frame connects to the Logitek JetStream Router using a balanced serial link. Connection
from the Pilot to a JetStream Router JSM-DSP card is via a straight-through RJ45 cable (CAT5 or
better is recommended).
You can use a dedicated CAT5 patch cable or existing structured cabling. If using structured cabling
systems, care should be exercised to ensure the serial connections are not confused with other
network outlets and that the link is not unintentionally “un-patched”.
Headphones
The Pilot frame has a rear connection for Headphones input, which is internally wired to ¼”
(6.35mm) and 1/8” (3.5mm) headphone sockets at the front. This provides for convenient
headphone connection without the need to mount an in-desk or under-desk socket.
Connection from the Pilot to JetStream Router is via a straight-through patch cable to a JetStream
JSM-AOUT analog output card, which is suitable for driving headphones directly.
If you would prefer to provide a different audio connection, wiring is to the StudioHUB+ standard.
 See Appendix C for connector pinouts.
GPIs
The Pilot Surface has 6 GPI inputs and 9 GPI outputs for control of local studio devices.
GPI outputs are driven by optically-isolated, non-polarized, solid state switches, rated at 500ma to a
maximum voltage of 24V AC/DC, with surge to 2A. These solid state devices do not conduct at low
voltage, so cannot switch an audio input. However, they are suitable for most control signals, and
avoid problems with relay contacts being damaged by surges. Caution should be exercised to avoid
overloading the switches. If driving a high current device, we recommend using an external relay.
The GPI inputs are a current source to +3.3VDC that is pulled to ground to activate. This makes it
suitable for control by push-button, relay or open collector. A diode protects against static and over
voltage up to 18V. See the wiring diagram for polarity information if using non-standard activation
methods. A common ground is provided for input connection.
Logitek Pilot Reference Manual 14