VeEX RXT3900, User Manual

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Interface:
CPRI Clock Selection Internal/External (Master mode only). Slave uses RX signal recovered clock.
If the unit is set as Master emulation mode, the following options are available:
Internal:
The clock for the transmitter is derived from the internal clock. The internal clock has an accuracy of +/-
3.5ppm conforming to G.812 recommendations.
External Clock Sources:
1.5MHz, 2MHz, 1.5Mbit/s, 2Mbit/s, 10MHz. For External clock connection use the unit's
SMA CLK port.
Offset:
The clock for the transmitter is derived from internal clock generator. It can change the offset while
measurements are running. Use numeric key to increase and decrease the frequency shift, up to 0.01ppm.
Frequency offset: ±50ppm with 1, 0.1, 0.01ppm resolution.
Atomic 10MHz:
The built-in Atomic Clock hardware option can provide highly stable frequency references on its
own.
If the unit is set in slave emulation mode, the clock is recovered from the RX CPRI link.
Interface
Payload:
CPRI Layer 2 configuration.
CPRI Emulation Type:
CPRI Master emulation (Radio Equipment Controller Emulation)
CPRI Slave emulation (Remote Radio Unit). Slave = RE. Master is responsible for CPRI Start up sequence and
Synchronization
CPRI Protocol:
Version 1 supported
#Z.0.1 Byte:
Sync Control Word Z.0.1 set to D16.2 or D5.6
Channels:
Single:
PRBS test pattern transmitted on one AxC
All:
PRBS test pattern transmitted on all AxC
RXT-3900 e-Manual D07-00-111P Rev A00