FarSync BERT FAQ
The FarSync BERT software supports the FarSync Flex, T2Ee and K2Ee, no other cards/devices are supported.
No, fsbert.py is a local module supplied as part of the Python example, which demonstrates using the BERT API with Python.
Only if ordered at the point of purchase, as Calibration certificates are an optional extra.
Yes, there is a calibration guide here: FarSync BERT Tester Calibration Guide
Yes, up to eight User patterns can be configured, please see the documentation supplied with the FarSync BERT software.
FarSync BERT V5.0.4 supports 64-bit versions of: Windows 11, Windows 10, Windows Server 2025, 2022 and 2019
The Flex/Flex-HS variants supports Async, however the PCIe variants do not.
The FarSync BERT can be configured for: V.24, X.21, V.35, RS530, RS449, RS485-2W (2-wire Multi-Drop) and RS485-4W (4-wire Multi-Drop)
Right-click the Table/Menu button and select About from the displayed menu:
Yes, the FarSync BERT should be disconnected from the network, a suitable loopback connector fitted and the clocking mode configured for INTERNAL, then run the required BERT test. Below is an FS4105 with a loopback connector (FS6024) running a BERT test:
Please see FAQ 8 here: FarSync FAQ – General
Yes, a custom rate can be programmed and then selected by the FarSync BERT software, please see the relevant documentation supplied with the drivers and FarSync BERT software.
The FarSync BERT software supports configuration of: NRZ, NRZI, FM0, FM1, MAN and DMAN. Please see the FarSync BERT help or manual for hardware specific variations.
Yes, line termination can be enabled/disabled via the FarSync BERT software, please see the FarSync BERT help or manual for further information.
Yes, the FarSync BERT software can be used via the command line, which also allows automated tests to be run using script files, please see the FarSync BERT help or manual for further details.
There are five selectable options, these are INERNAL, EXTERNAL, INTERNAL + TT, EXTERNAL + TT and BIDIRECT. Below is a brief description of each option, together with a table showing the pins used when the FarSync BERT software is configured for V.24:
INTERNAL
DCE mode where the BERT hardware provides clock(s) to the peer device.
| Signal | DB25M Pin | Direction | |
|---|---|---|---|
| Transmit Clock | TxC | 15 | Output |
| Receive Clock | RxC | 17 | Output |
EXTERNAL
DTE mode where the BERT hardware expects to receive clock(s) from its peer device.
| Signal | DB25M Pin | Direction | |
|---|---|---|---|
| Transmit Clock | TxC | 15 | Input |
| Receive Clock | RxC | 17 | Input |
INTERNAL + TT
DCE mode using Terminal Timing, where the BERT hardware provides clock(s) to its peer device and expects to receive back an External Transmit Clock.
| Signal | DB25M Pin | Direction | |
|---|---|---|---|
| Transmit Clock | TxC | 15 | Output |
| Receive Clock | RxC | 17 | Output |
| External Transmit Clock | XTC | 24 | Input |
EXTERNAL + TT
DTE mode using Terminal Timing, where the BERT hardware expects to receive a Transmit clock from its peer device and will transmit back an External Transmit clock.
| Signal | DB25M Pin | Direction | |
|---|---|---|---|
| Transmit Clock | TxC | 15 | Input |
| External Transmit Clock | XTC | 24 | Output |
BIDIRECT
The BERT Hardware sends a Transmit clock to its peer device and expects to receive back a Receive clock.
| Signal | DB25M Pin | Direction | |
|---|---|---|---|
| Transmit Clock | TxC | 15 | Output |
| Receive Clock | RxC | 17 | Input |