FiberPlex TD-7280 - Manual (Page 7)

Configuration Switch – Audio, Network and Serial Data configuration is set via 8 Dip switches. Setting for
these switches can be found in the table below. See “Connection Details” section later in the manual for more
specific description of all of the modes of operation.
SWITCH SETTINGS
Marking Description Pos Switch Setting
Unbal Convert audio inputs and outputs to unbalanced
1 ↑ Unbalanced, single‐ended
↓ Balanced, differential
PTT Mute audio inputs based on state of control input
2 ↑ Auto‐mute
↓ Transmit Always
Network Network mode selection
3‐4
↑ ↑ Slave
↑ ↓ Intercom Master
↓ ↑ Broadcast Master
↓ ↓ Point to point Master
Serial
Mode
Serial protocol select 5‐6
↑ ↑ RS‐485 2‐wire
↑ ↓ RS‐485 4‐wire
↓ ↑ RS‐422
↓ ↓ RS‐232
Idle Serial Idle State for RS‐485 7
↑ Idle state = 1
↓ Idle state = 0
Term Serial line termination enable 8
↑ No Termination
↓ Termination Enabled
Power – LED which indicates the presence of DC power in the unit. Note that on start‐up, the unit will
perform a quick lamp check, flashing all LEDs
Power Indicator
Off No power from the external supply or internal fault
Blue Power supply is operating properly
TX Fault RX Detect – There is one pair of these LED indicators associated with each SFP slot on the
unit. They correspond to the slot directly below. Color indications can be interpreted using the following table:
TX Fault RX Detect SFP Installed Transmitter Functioning Receive Signal Present
Off Off No n/a n/a
Red Red Yes No No
Red Green Yes No Yes
Green Red Yes Yes No
Green Green Yes Yes Yes
SFP Port – Install an optical SFP in this slot. This slot conforms to the SFP MSA pinouts (INF‐8074i, more
information later in this manual). Any standard MSA complaint optical SFP can be used in this slot that
supports a minimum data rate of 346Mbps.
Units ordered with the “‐L5B” and “‐L12” option come with an appropriate SFP pre‐installed. The “‐C” option
has an empty SFP cage that can accept either a user supplied SFP or a Quadrax SFP‐SFP cable (ordered
separately) for connection to the FiberPlex WDM16 or WDM8.