Interfaces and Connectors
R&S
®
ETL
30Getting Started 2118.4130.02 ─ 04
5.2.4 OCXO Reference Frequency (B4)
Optional; installed in slot 4, see Figure 5-2.
Generates a very precise 10 MHz reference signal. The signal is output at the EXT
REF standard connector, see page "EXT TRIG/GATE" on page 27. The output level is
listed in the data sheet.
The AC power switch also interrupts the power supply of the OCXO (OCXO Reference
Frequency option, R&S FSL-B4). When switching the R&S ETL back on, be sure to
comply with the extended warm-up phase specified in the data sheet.
5.2.5 Universal DTV, ATV, FM Interface (B201)
Optional; installed in slot 5, see Figure 5-2.
1
SER CLK / AF GEN L OUT
The output signal depends on the selected standard:
●
Provides the serial clock after demapper. Used in combination with SER DAT OUT.
For the following digital TV standards, this interface is intended for external BER
measurement.
– ATSC/8VSB (R&S ETL-K220)
– DVB-T/H (R&S ETL-K240)
– T-DMB/DAB (R&S ETL-K250)
– ISDB-T (R&S ETL-K260)
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