Atec Aeroflex-3920B - Manual (Page 21)

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GRAPHICAL DIsPLAYs
TETRA
RF sIGNAL GENERATOR
RF RECEIVER
TETRA MEAsUREMENTs
Frequency
Range 10 MHz to 1.05 GHz (Standard) (Usable from
100 kHz)
10 MHz to 2.7 GHz (392XOPT058) (Usable
from 100 kHz)
Level Range T/R Port: -40 dBm to +40 dBm
ANT Port: -80 dBm to 0 dBm
burst Types MS: Control Burst (CB), Normal Uplink Burst
(NUB)
BS: Normal Downlink Burst (TS1+2, TS1, and
TS2),
Synchronization Burst, PRBS with no training
sequence
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FREQUENCY
Range 10 MHz to 1.05 GHz (Standard)
(Usable from 100 kHz)
10 MHz to 2.7 GHz (392XOPT058)
(Usable from 100 kHz)
Resolution 1.0 Hz
Accuracy Frequency standard ±1 count
OUTPUT LEVEL
Range T/R Port: -130.0 dBm to -40.0 dBm
Gen Port: -130.0 dBm to 0 dBm
Resolution 0.1 dB
Accuracy 1.0 dB for levels >-110 dBm (typical
better than 0.6 dB)
1.5 dB for levels ≤-110 (typical
better than 1.0 dB)
MODULATION
Type π/4 DQPSK, 18 ksymbols/sec, TETRA
filter (RRC with ≤0.35)
Accuracy <3% RMS
<6% peak
Residual Carrier Power <-35 dBc
UUT Tx bER METER
Range 0 to 20%
Resolution 0.1%
sIGNAL POWER METER
Range T/R Port: -60 to +51 dBm
ANT Port: -100 to +10 dBm
Resolution 0.1 dB
Accuracy ±1 dB (±0.6 dB typical)
MODULATION &
POWER ANALYsIs
Constellation Line graph of the deviation at the symbol
point.
Distribution Graph of the statistical distribution of the
deviation at the symbol point. This is a graph
of the deviation at the symbol point versus the
percentage of occurence of that deviation.
Eye Diagram Graph of the demodulated signal versus
time, synchronized with the symbol points.
The number of symbol periods is selectable.
Range is 2 to 16.
Power Over Time Displays the power measurement of the
received signal over a specified period of time;
indicating the transmitter’s stability.
TEsT sIGNALs
TETRA MS Main Control Channel (MCCH) Traffic
Channel (TCH/S) containing silence or 1
kHz tone or talk-back, Fast Associated
Control Channel (FACCH)
TETRA MS T1 T1 test signals (in accordance with ETSI
EN 300 394-1) T1 type 1 (TCH/7.2), T1
type 2 (SCH/F), T1 type 3 (BSCH + SCH/
HD), T1 type 4 (TCH/2.4), T1 type 15
(TCH/S), T1 type 17 (TCH/4.8)
TETRA BS T1 T1 test signals (in accordance with ETSI
EN 300 394-1) T1 type 7 (TCH/7.2), T1
type 8 (SCH/F), T1 type 9 (STCH+ STCH
UL), T1 type 10 (TCH/2.4), 18 Frame
PRBS, Framed PRBS, Unframed PRBS
TETRA DM Traffic Channel (TCH/S) containing silence
or 1 kHz tone ot talk-back
POWER Average power across the useful part
of the burst measured at the symbol
points through a TETRA filter
Resolution 0.1 dB
Accuracy ±1.0 dB (±0.6 dB typical)
MODULATION
ACCURACY Modulation accuracy measures the
displacement of symbol points from
their ideal position
Range 20.0% RMS vector error
40.0% Peak vector error
20.0% Residual carrier
Resolution 0.1%
Accuracy ±0.5% at 10% error
bURsT TIMING ERROR Timing error relative to downlink results
available for avg, max, min and worst
case for a sample of up to 250 bursts
Range ±510.00 symbols
Resolution 0.01
Accuracy ±0.05 symbols
Timing offset range ±999.99 symbols