Racelogic USER GUIDE Manual de usuario descargar pdf (Pagina 14)

Page | 14 Revision 1.4 15 January

2015

External reference clock input

LabSat 3 features an external reference input for synchronization to a 10MHz clock. To use this feature,

connect a 10MHz reference signal with minimum +6dB level to the REF IN SMA connector and ensure that

the External 10MHz reference clock option is ticked in MENU  SETUP  CLK REF  External 10MHz.

When the external reference input is enabled, the symbol will appear in the top right corner of the LCD.

Digital channels

There are 1 or 2 channels available for external digital data capture depending on the system variant and

the options that have been purchased with the LabSat. Recorded digital channel data is synchronized to

each sample of recorded RF data; the maximum input frequency for each channel is 1MHz. To record 2

digital channels, at least 2 RF channels must be selected or 1 single channel with 2-bit quantisation. The

Digital menu allows CH1 or CH2 (subject to LabSat variant) to be configured to record any of the following

parameters:-

Function

Description

Option or Standard

1PPS

This is the 1 Pulse Per Second output from the internal GNSS monitor and

will become active once the internal GNSS monitor has a position fix. Note,

that if using battery power with the power save option enabled, the GNSS

monitor will power-down after approx 30 seconds into the recording and

therefore not be present in the recorded data. During replay, the recorded

1PPS signal will be output on pin 2 (DIGO) of the expansion connector.

Standard

CAN

CAN 1 and CAN 2 on the expansion connector (RLACS202) will be recorded

on channel 1 & 2 of the LabSat 3. See section CAN BUS for more details.

Option on Single

constellation

variant*

RS232

This will record an RS232 level signal input on pin 18 of the expansion

connector. During replay, pin 17 of the expansion connector will output the

recorded data at RS232 level. Because the RS232 signal is digitized directly,

it is not necessary to configure baud rate.

Option on Single

constellation

variant*

DIGI

Will record the digital state of pin 3 of the expansion connector. During

replay, the signal will be re-created on pin 2 (DIGO) of the expansion

connector. See section EXPANSION CONNECTOR for more details.

Option on Single

constellation

variant*

*Contact Racelogic or your LabSat distributor to purchase upgrade options

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