Operating instructions

More Complex Programming Examples R&S ESCI

1166.6004.12 7.26 E-1

Measuring the Channel and Adjacent Channel Power

In the following example, the channel and adjacent channel power is first measured on a signal with a

level of 0 dBm at 800 MHz to IS95. Then the channel and adjacent channel power is measured on a

GSM signal at 935.2 MHz with fast ACP measurement (FAST ACP).

In addition, the limit test is activated.

REM ************************************************************************

Public Sub ACP()

result$ = Space$(100)

'--------- R&S ESCI default setting ----------------------------------------

----

CALL SetupStatusReg 'Set status register

CALL IBWRT(receiver%,"*RST") 'Reset instrument

CALL IBWRT(receiver%,"INIT:CONT OFF") 'Single sweep

CALL IBWRT(receiver%,"SYST:DISP:UPD ON") 'ON: display on

'OFF: off

'--------- Set frequency ---------------------------------------------------

CALL IBWRT(receiver%,"FREQ:CENT 800MHz") 'Set frequency

'--------- Set level -------------------------------------------------------

CALL IBWRT(receiver%,"DISP:WIND:TRAC:Y:RLEV 10dBm") 'Reference level

'--------- Example 1: Configure CP/ACP for CDMA ---------------------------

CALL IBWRT(receiver%,"CALC2:MARK:FUNC:POW:SEL ACP") 'ACP measurement on

CALL IBWRT(receiver%,"CALC:MARK:FUNC:POW:PRES F8CDMA") 'Select CDMA800 FWD

CALL IBWRT(receiver%,"SENS:POW:ACH:ACP 2") 'Select 2 adjacent channels

CALL IBWRT(receiver%,"SENS:POW:ACH:PRES ACP") 'Optimize settings

CALL IBWRT(receiver%,"SENS:POW:ACH:PRES:RLEV") 'Optimize reference level

CALL IBWRT(receiver%,"SENS:POW:ACH:MODE ABS") 'Absolute measurement

CALL IBWRT(receiver%,"SENS:POW:HSP ON") 'Fast ACP measurement

'--------- Perform measurement and query results --------------------------

CALL IBWRT(receiver%,"INIT;*WAI") 'Perform sweep with sync

CALL IBWRT(receiver%,"CALC2:MARK:FUNC:POW:RES? ACP") 'Query result

CALL IBRD(receiver%, result$)

'--------- Read out result -------------------------------------------------

Print "Result (CP, ACP low, ACP up, Alt low, Alt up): "

Print result$