E1968A Datasheet, PDF (8/22 Pages) Keysight Technologies – GSM/GPRS/EGPRS Test Application

08 | Keysight | E1968A GSM/GPRS/EGPRS Test Application - Technical Overview
Single channel GPS source
A reduced single channel GPS signal can be generated for GPS receiver
C/N0 test. The signal can be output from either RF IN/OUT or RF OUTPUT
ONLY.
Signal frequency
1575.42 MHz
Signal level range
–70 to –125 dBm
Satellite ID
1 to 37
Chip rate
1.023 Mcps
Code support
C/A code
Signal level accuracy < ± 1.0 dB for signal level from – 70 to –116 dBm
< ± 1.5 dB for signal level from –116 to –25 dBm
GMSK signal generation
Absolute output level accuracy with GMSK modulation on:
Specification
Ranges
< ± 1.10 dB
Single slot from –110 to –13 dBm
< ± 1.10 dB
1 multislot level between –110 and –13 dBm
< ± 1.50 dB
2 multislot levels ≤ 20 dB apart between –110
and –70 dBm
Peak phase error
< ± 4 degrees
rms phase error
< 1 degree
Frequency error
< ± 0.01 ppm plus timebase reference
Amplitude flatness
< ± 0.3 dB for single-slot GMSK signals
< ± 1.0 dB for multislot GMSK signals
Supplemental characteristics
Typical absolute output level accuracy with GMSK modulation on:
Specification
Ranges
< ± 0.55 dB
Single slot from –110 to –13 dBm
< ± 0.55 dB
1 multislot level between –110 and –13 dBm
< ± 0.85 dB
2 multislot levels ≤ 20 dB apart between –110
and –70 dBm
Typical burst modulation > 50 dB
on/off ratio (referenced
to lowest signal level)
8PSK signal generation
Absolute output level accuracy with 8PSK modulation on:
Specification
Ranges
< ± 1.10 dB
Single slot from –110 to –13 dBm
< ± 1.10 dB
1 multislot level between –110 and –13 dBm
< ± 1.50 dB
2 multislot levels ≤ 20 dB apart between –110
and –70 dBm
rms EVM
< 4%
Origin offset
suppression
> 35 dB
Frequency error
< ± 0.02 ppm plus timebase reference
Supplemental characteristics
Typical absolute output level accuracy with 8PSK modulation on:
Specification
Ranges
< ± 0.57 dB
Single slot from –110 to –13 dBm
< ± 0.57 dB
1 multislot level between –110 and –13 dBm
< ± 0.85 dB
2 multislot levels ≤ 20 dB apart between –110
and –70 dBm
Spectral purity
Harmonics
≤ –25 dBc for levels ≤ –17 dBm
Subharmonics
≤ –40 dBc
Non-harmonics
< –55 dBc for 100 to ≤ 1500 kHz offsets from
carrier, < –68 dBc for > 1500 kHz offsets from
carrier
Supplemental characteristics
Typical non-harmonic
performance
< –55 dBc for 3 to < 100 kHz offsets
< –53 dBc for line-related non-harmonics
Typical spurious due to < –50 dBm for spurious at 105 ± 2.5 MHz below
receiver LO leakage
expected transmitter frequency and its second
harmonic
RF analyzer functionality
RF frequency
Ranges applied to
demodulation and
transmitter
specifications
450 to 496 MHz, 700 to 800 MHz, 810 to
960 MHz, and 1.7 to 1.99 GHz
Supplemental characteristics
Operating range
292.5 to 2700 MHz
Transmitter and receiver measurement
specifications
The time until a measurement times-out and returns control to
the user can be set independently for each measurement. All
measurements return a measurement integrity result indicating
the accuracy and usefulness of each measurement’s results.
EGPRS 8PSK measurements are GSMSK-tolerant. Any GMSK
bursts are detected and discarded. Measurements continue when
the next 8PSK burst is detected. EGPRS GMSK measurements
are also 8PSK-tolerant.
Frequency coverage and amplitude range
Unless otherwise noted, all specifications apply to frequencies of
450 to 496 MHz, 700 to 960 MHz, and 1.7 to 1.99 GHz, signals
with peak input power at the test set’s RF IN/OUT not higher than
+37 dBm, and temperatures of 0 to +55 °C. Input signal transmit
power (defined as the average power over the useful part of the
burst) at the test set’s RF IN/OUT must be within ± 3 dB of the
test set’s expected power for warranted performance.