Digital Standard DECT
SMIQ
1125.5555.03
E-9
2.326
CLOCK...
Opens a window for selecting the clock source and for setting a delay.
FREQ
100. 000 000 0
MHz
FREQUENCY
LEVEL
ANALOG MOD
VECTOR MOD
DIGITAL MOD
DIGITAL STD
LF OUTPUT
SWEEP
LIST
MEM SEQ
UTILITIES
DECT
PHS
IS-95
NADC
PDC
GSM
DECT
STATE
MODULATI ON...
TRIGGER MODE
EXECUTE TRIG
TRIGGER. ...
CLOCK...
POWER RA MP C>
SLOT ATT ENUA
CLOCK SOURCE
INT
EXT
DELAY
0.00 Symb
LEVEL
- 30.0
dBm
PEP
- 30.0
dBm
FULL
0
1
Fig. 2-208
Menu DIGITAL STD - DECT - CLOCK..., SMIQ equipped with Modulation Coder SMIQB20
and Data Generator SMIQB11
(CLOCK...)
CLOCK SOURCE
Selection of clock source.
INT
SMIQ uses internally generated clock signals.
EXT
An external symbol clock or bit clock is fed in
at connectors SYMBOL CLOCK or BIT
CLOCK. The clock synthesizer on the
modulation coder is synchronized to this
clock.
The symbol rate has to be set with an
accuracy of
±
1 %.
The polarity, the trigger threshold and the
input resistance of the clock inputs can be
modified in menu DIGITAL MOD - EXT
INPUTS.
IEC/IEEE-bus command :
SOUR:DECT:CLOC:SOUR INT
DELAY
Setting the delay of generated modulation signal to an
external clock.
This can be used, for example, for synchronization with a
second unit to achieve time synchronization between the
modulation signals of the two units.
IEC/IEEE-bus command
:SOUR:DECT:CLOC:DEL 0.5
