Rohde & Schwarz SME02 - External Data Sources; Table 2-5 Radio Network Data

Digital Modulation SME
1038.6002.02 2.86 E-13
2.6.3.4 External Data Sources
Inputs DATA, CLOCK and BURST are available for the digital modulation with external data signals.
The polarity of the modulation and the active clock edge can be selected in the menu. In the case of
4FSK and QPSK modulation, the CLOCK input can be switched over between bit clock and symbol
clock. The BURST input controls the level reduction indicated in the menu under LEVEL
ATTENUATION in the case of external modulation. What is to be considered is that the delays of
modulation processing and level control are different. The delays of the different modulations are listed
in table 2-5, radio network data. The delays of the level control are 2
µ
s in switch-on and approx. 1
µ
s in
switch-off (cf. Fig. 2-38 as well).
Table 2-5 Radio network data
Network Modulation Filter Bit rate Delay (INT) Delay (EXT)
GSM / PCN GMSK Gauss 0.3 270.833 kb/s 3.8 bit 2.8 bit
CDPD GMSK Gauss 0.5 19.2 kb/s 3.8 bit 2.8 bit
MC9 GMSK Gauss 0.25 8 kb/s 3.8 bit 2.8 bit
DSRR GMSK Gauss 0.5 4 / 16 kb/s 3.8 bit 2.8 bit
MD24...MD192 GMSK Gauss 0.3 / 0.5 2.4. to 19.2 kb/s 3.8 bit 2.8 bit
MOBITEX GMSK Gauss 0.3 8 kb/s 3.8 bit 2.8 bit
DECT GFSK Gauss 0.5 1152 kb/s 4.4 bit 3.4 bit
CT2 GFSK Gauss 0.5 72 kb/s 4.4 bit 3.4 bit
CT3 GFSK Gauss 0.5 640 kb/s 4.4 bit 3.4 bit
NADC
π/4 DQPSK √cos 0.35
48.6 kb/s 12 bit 12 bit
PDC
π/4 DQPSK √cos 0.5
42 kb/s 12 bit 12 bit
TFTS
π/4 DQPSK √cos 0.4
44.2 kb/s 12 bit 12 bit
APCO25
π/4 DQPSK
cos 0.2 9.6 kb/s 12 bit 12 bit
TETRA
π/4 DQPSK √cos 0.35
36 kb/s 12 bit 12 bit
MSAT QPSK
√cos 0.6
6.75 kb/s 12 bit 12 bit
INMARSAT-M OQPSK
√cos 0.6
8 kb/s 12 bit 12 bit
ERMES 4FSK Bessel 3.9 kHz 6.25 kb/s 3.3 bit 3.3 bit
APCO25 4FSK cos 0.2 9.6 kb/s 9.5 bit 9.5 bit
FLEX 4FSK Bessel 3.9 kHz 3.2 / 6.4 kb/s 3.3 bit 3.3 bit
MODACOM 4FSK
√cos 0.2
9.6 kb/s 9.5 bit 9.5 bit
CITYRUF FSK Gauss 2.73 512/1200/2400 b/s 3.6 bit 2.6 bit
POCSAG FSK Gauss 2.73 512/1200/2400 b/s 3.6 bit 2.6 bit
FLEX FSK Bessel 3.9 kHz 1.6/3.2 kb/s 1.5 bit 0.5 bit
POCSAG FFSK AF 1200/1800 1200 b/s 2.0 bit 1.0 bit