Display Reference

SL Optic has a monochrome LCD on the front panel that shows real-time status information across five screens. Press the SELECT button to cycle through them.

By default, Screen 1 is shown. The display automatically switches to Screen 2 for a few seconds when the device powers on or when a DIP switch is changed, then returns to Screen 1.

Screen 1 — SDI Channel Status

The default view. Shows the current state of all four BNC/SDI channels in a table layout.

BNC 1  2  3  4
Di: In Ou In Ou
    3G HD -- SD
    12 08 -- 24

Row	Content
Row 1	Channel numbers: `BNC 1 2 3 4`
Row 2	Direction setting per channel: `In` = configured as SDI input / optical output; `Ou` = configured as SDI output / optical input
Row 3	Detected SDI signal standard on each channel — see table below
Row 4	Estimated cable length for the incoming SDI signal (0–64 scale, where 0 = shortest detected cable)

Signal Standard Codes

Display Code	Standard	Bitrate
`--`	No signal detected or not recognized	—
`MA`	MADI	125 Mbit/s
`SD`	SD-SDI (SMPTE 259M)	270 Mbit/s
`HD`	HD-SDI (SMPTE 292M)	1.485 Gbit/s
`3G`	3G-SDI (SMPTE 424M)	2.97 Gbit/s
`6G`	6G-SDI (SMPTE 2081)	5.94 Gbit/s
`12G`	12G-SDI (SMPTE 2082)	11.88 Gbit/s

Note

The cable length value in Row 4 is only meaningful for channels set to In (receiving SDI). On channels set to Out, the value is not applicable.

Screen 2 — Channel Direction Overview

Shows the configured conversion direction for all four channel pairs, plus the recommended SFP module type for each slot.

BNC1>>>SFP1 IO
BNC2<<<SFP2 IO
BNC3>>>SFP3 2O
BNC4>>>SFP4 2O

Each line follows the format: BNCx [direction] SFPx [module type]

Direction Indicator	Meaning
`>>>`	SDI → optical (BNC is input, SFP is output)
`<<<`	Optical → SDI (SFP is input, BNC is output)

Module Type Code	Recommended SFP Type
`IO`	Bidirectional (BiDi) — one RX, one TX on separate fibers or wavelengths
`2I`	Dual input — both ports receive
`2O`	Dual output — both ports transmit
`??`	Indeterminate — check channel configuration

This screen appears automatically for a few seconds after any DIP switch change, making it easy to confirm the new configuration.

Screen 3 — SFP 1/2 Optical Power

Shows the optical signal levels for the channels handled by the SFP 1/2 module.

RX/TX Power
SFP1   SFP2
RX: -3.12 -4.05
TX: -2.80 00001

Row	Content
Row 1	Screen label: `RX/TX Power`
Row 2	Port identifiers: `SFP1 SFP2`
Row 3	Received optical power in dBm for SFP1 and SFP2
Row 4	Transmitted optical power in dBm for SFP1 and SFP2

A value of 00001 indicates that optical power monitoring is not available for that port. This occurs in the following cases:

Module Type	Expected `00001` Readings
Dual input (2I)	TX Power for both ports
Dual output (2O)	RX Power for both ports
Bidirectional (BiDi)	RX of SFP1 and TX of SFP2 (or vice versa depending on orientation)

If no module is installed in the SFP 1/2 slot, or if the module does not support DDMI, the screen displays: SFP1/2 EMPTY or w/o DDMI

Screen 4 — SFP 3/4 Optical Power

Identical in format to Screen 3, but showing optical power levels for the SFP 3/4 module.

RX/TX Power
SFP3   SFP4
RX: -3.44 00001
TX: 00001 -2.91

If no module is installed or DDMI is unsupported: SFP3/4 EMPTY or w/o DDMI

Screen 5 — Device Information

Shows hardware version, firmware version, and the status of both power supply inputs.

HW: 1.2  FW: 2.1
     -
PWR_A: OK
PWR_B: OK

Row	Content
Row 1	Hardware version (`HW`) and firmware version (`FW`)
Row 2	Not currently used
Row 3	Status of power input A
Row 4	Status of power input B

Power Status Values

Value	Meaning
`OK`	Power supply is present and within normal range
`TOO HI!!!`	Supply voltage exceeds 15 V — check power source
`OFF!`	No power detected on this input, or voltage is too low

Note

Running on a single supply (OFF! on one input) is normal if one PSU has failed or been disconnected. However, redundancy is lost — replace the failed supply as soon as possible.