AJA FS1 - Manual (Page 36)

28
• Input 2 and Output 2 share a common isolated ground on pins 7 & 9 (I/O
Ground 2).
• Pin 5, local chassis ground, may only be used as a reference when isolation is
not required.
• Both GPI inputs are internally pulled high through a 10K ohm resistor to an
isolated 5V supply, so that a relay contact closure or any device sinking at least
0.4 mA to ground will register a logic low.
• Both GPI outputs are 5V TTL compatible, sourcing up to 6mA and sinking up
to 4mA each.
Cabling the System
Where to Place
FS1 • Plan adequate space for cable routing from the back of the chassis. Ensure that
cable connectors are not stressed and that cables are not bent or crimped.
• When rackmounting or stacking multiple FS1 chassis, ensure there is adequate
airspace for cooling around the FS1 units. Note the location of cooling vents
on all equipment next to the FS1 and ensure none are obstructed.
Note: FS1 units earlier than serial number 2F0482 should not be stacked more
than two together; later units can be stacked vertically without limit as long as there
is adequate cool air supply around the FS1 vents.
Power
Requirements • Input Voltage—Chassis: autosensing 100VAC to 240VAC, 50/60Hz,
fully redundant with both power supplies diode isolated
• Power Consumption—25 Watts
Warning: Do not open the chassis. There are no user-serviceable parts inside.
Hazardous voltage is present inside the unit, presenting a risk of electric shock or serious
personal injury. Opening the chassis will void the warranty unless performed by an AJA
service center or licensed facility. Remove the two supplied AC line cords from mains power
when moving the unit. Do not defeat the safety purpose of the grounding-type plug.
System Video/
Audio Cable
Connections When installing your system, you’ll make video and audio input/output
connections. These connectors are explained individually in chapter 2.
FS1 Audio Level
Choices Pro or
Consumer Since the FS1 handles both digital and analog audio and can convert between the
two, it provides settings via the parameter menus and the remote web browser, that
allow you to control the relationship between audio level in analog versus the same
audio level in the digital domain. The FS1 offers four settings to accommodate these
different audio relationships in both professional and consumer audio applications.
WARNING