CALL:MODulation

CALL:MODulation

Last updated: November 25, 2010

GPIB Command Conventions

CALL:MODulation[:FORMat]:CONTrol:AUTO

Function

GSM TA

This command is not applicable to GSM.

GPRS TA

This command is not applicable to GPRS.

GSM/GPRS LA

This command is not applicable to the GSM/GPRS LA.

EGPRS TA

This command sets/queries the modulation format control state.

If set to On, the test set determines which modulation type to expect based on a combination of the current Cell Operating Mode, the current System Type, and the current Modulation Coding Scheme on the uplink. Coding Schemes MCS1 through 4 use GMSK modulation; MCS5 through 9 use 8PSK modulation.

If set to Off, the modulation format control is set to manual, allowing you to set each burst individually to expect either GMSK modulation or 8PSK modulation.

EGPRS LA

Setting

0 | OFF | 1 | ON

Query

0 | 1

*RST Setting

1 | ON
Requirements

GSM/GPRS/
EGPRS TA

Revision: A.03 and above

GSM/GPRS/
EGPRS LA

Revision: C.03 and above

CALL:MODulation[:FORMat]:MANual:BURSt[1]|2|3|4|5|6|7

Function

GSM TA

This command is not applicable to GSM.

GPRS TA

This command is not applicable to GPRS.

GSM/GPRS LA

This command is not applicable to the GSM/GPRS LA.

EGPRS TA

This command sets/queries the modulation format manually for the burst you specify in the multislot configuration.

If you expect your mobile to transmit a GMSK (Gaussian Minimum Shift Keying) signal, you should set this command to GMSK. EGPRS modulation coding schemes MCS1 through MCS4 use a GMSK modulated signal.

If you expect your mobile to transmit an 8PSK (Eight Phase Shift Keying) signal, you should set this command to EPSK. EGPRS modulation coding schemes MCS5 through MCS9 use an 8PSK modulated signal.


If you expect your mobile to transmit an 16QAM (Sixteen Quadrature Amplitude Modulation) signal, you should set this command to 16QAM. EGPRS2A modulation coding schemes UAS7 through UAS11 use an 16QAM modulated signal.


If the modulation format is set to GMSK, but an 8PSK or 16QAM signal is applied the measurement discards all bursts until it locates a GMSK burst. The measurement does not complete until it locates a burst of the type it expects.

You must set the modulation format control state to manual before using this command. See CALL:MODulation[:FORMat]:CONTrol:AUTO .

Bursts 7 and 8 only apply when the operating mode is set to Fast Device Tune .

EGPRS LA

Setting

Range: GMSK | EPSK | 16QAM

Query

Range: GMSK | EPSK |16QAM

*RST Setting

GMSK
Requirements

GSM/GPRS/
EGPRS TA

Revision: A.03 and above

Revision A.04 adds bursts 3 through 7

Revision A.13 adds 16QAM

GSM/GPRS/
EGPRS LA

Revision: C.03 and above

Revision E.00.08 adds bursts 3 through 7

Revision H.01 adds 16QAM

Programming Example

 
OUTPUT 714;"CALL:MODulation:MANual:BURSt2 EPSK" 
! Sets the manual modulation format for the second uplink burst to 8PSK.