Specifications

Chapter 4 92
Tests
TEST_09 RX Reference Sensitivity (TCH/FS)
TEST_09 RX Reference Sensitivity (TCH/FS)
Description This test displays bit-errors (RX BET) and frame erasures (RX FE).
The measured values returned for bit errors or frame erasures can be
expressed in count, percent, or ppm (set by the “RX BER/FER results”
parameter).
With the HP/Agilent 8922 acting as a base-station simulator, the mobile
station is put in loopback mode. A pseudo-random bit sequence is
transmitted by the HP/Agilent 8922 at a low RF level. The mobile
station re-transmits the bit sequence, using full rate speech at a high
RF level. Bit Errors (BETs) and Frame Erasures (FEs) are displayed for
the chosen Radio Frequency Channel and types of bits chosen in the
parameters list.
Specifications
Channels Static Conditions
TCH/FS Max Events Max Samples
FER
200X (0.122X%)
1
1. Where “X” is a parameter which can range from 1 to 1.6. The
value for “X” must be the same for the FER and class Ib bits.
164,000
Class Ib (RBER) 82,000/X (0.41/X%) 20,000,000
Class II (RBER) 200 (2.44%) 8,200
Spec
no.
Description Units GSM900
Default
Lower
Limit
GSM900
Default
Upper
Limit
DCS1800
Default
Lower
Limit
DCS1800
Default
Upper
Limit
PCS1900
Default
Lower
Limit
PCS1900
Default
Upper
Limit
1 RX ref
sensitivity
type Ib BER
ct/%/
ppm
0.41 0.41 0.40
2 RX ref
sensitivity
type Ib FER
fr/%/
ppm
0.12 0.12 0.10
3 RX ref
sensitivity
type II BER
ct/%/
ppm
2.40 2.40 2.00
4 RX ref
sensitivity
type II FER
fr/%/
ppm
0.12 0.12 0.10