BNC 685C Arb Rider Series Digital Option User Guide

BNC 685C Arb Rider Series Digital Option

Dear customer

the purpose of this manual is to describe the digital options, the digital outputs and the accessories related to them.
If you buy the digital option and the RIDER-MINI-SAS-HD item, you will receive a software licence key and 1 mini-SAS HD cable 1m long.
Be careful that, even if this cable has the same mechanical dimension of SFF-8644 standard, the electrical connection are customized, so it’s not possible to use standard mini-SAS HD cables otherwise the unit will be damaged.

There are also two additional accessories available to be used with the digital outputs. These accessories are not included in the digital option and must be bought separately as the cable. The two accessories are:

• The AT-LVDS-SMA8 cable. This is a mini-SAS to SMA cable adapter. It allows to convert the 8 digital LVDS output of the mini-SAS connector into 16 SMA connectors (2 SMA per LVDS pair)
• The AT-DTLL8. This is a probe that can be connected to the mini-SAS HD cable provided with the dig license and it allows to convert LVDS output of the mini-SAS HD connector into LVTTL standard signals.

The end of the mini-SAS HD cable provided with the digital options mechanically mates with standard mini-SAS HD connectors while the electrical connection is different from the standard.
If you need to connect the mini-SAS HD cable provided with the digital option to your custom electronic board you can use a standard mini-SAS HD connectors (e.g. Amphenol 10112626-101LF, Amphenol 10112632-101LF, Amphenol 10120666-101LF, TE Connectivity 2198484-1) but you should take care of using the electrical connection shown below.
The connection of the AT-LVDS-SMA8 cable adapter (mini-SAS HD to 16 SMA adapter cable) are also described in the table below.

Connector Pinout

Mini-SAS HD connector pinout

Mini-SAS HD connector| Assigned signal| AT-LVDS-SMA8 Mini SAS HD to 16 SMA cable (8 LVDS output)
---|---|---
A1| + 12Vc c| NA
A2| +12Vc c| NA
A3| GND| SMA Ground
A4| D07| P| D07| P
A5| D07| N| D07| P
A6| GND| NA
A7| DOOP| 000 P
A8| DOON| DOON
A9| GND| SMA Ground
B1| CSl (RESERVED). Do n o t connect.| NA
B2| +l2Vcc| NA
B3| GND| SMA Ground
B4| DO6 P| DO6 P
B5| DO6 N| DO6 N
B6| GND| SMA Ground
B7| DO P| DO l P
B8| DO N| DO l N
B9| GND| SMA Ground
C1| +5Vcc| NA
C2| +5Vcc| NA
C3| GND| SMA Ground
C4| DS P| DOS P
C5| DS N| DOS N
C6| GND| SMA Ground
C7| D2 P| DO2 P
C8| D2 N| DO2 N
C9| GND| SMA Ground
D1| SCL {RESERVED}. Do not connect.| NA
D2| SDA (RESERVED).
Do not connect.| NA
D3| GND| SMA Ground
D4| D4 P| DO4 P
DS| D4 N| 004 N
D6| GND| SMA Ground
D7| D3 P| DO3 P
D8| D3 N| 003 N
D9| GND| SMA Ground

AT-LVDS-SMA8

The AT-LVDS-SMA8 cable adapter converts from the Mini SAS HD connector located on the rear panel of the instrument to 16 SMA connectors. This cable ensures the best signal integrity and flexibility required for transmitting the high speed digital signals provided by the BNC AWG Series.

AT-DTTL8

The AT-DTTL8 is an 8bit LVDS to LVTTL adapter that converts the LVDS differential signals provided by the mini-SAS HD digital connector to standard LVTTL single ended signals. The probe provides the possibility to program by software the high level voltage of the TTL signals from 0.8V to 3.8V (into high impedance load).
The AT-DTTL8 probe max bit rate is 125 Mbps @ 0.8V and 400 Mbps@3.8V.

Important Note : the 685-8CD-8DIG / 675-4C-1G-DIG8 / 670-4C-512M-DIG8 does not include the AT-DTTL8 and the RIDER-MINI-SAS-HD cable, that must be bought separately.

Below the description of the TTL signal connector is provided.

Proprietary standard
Cable Lenath| 1 meter
Cable Type| Proprietary

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