Concurrent Measurements

Concurrent Measurements

Last updated: January 16, 2009

Description

A number of measurements can be initiated (with the INITiate command) while other measurements are being made, and the test set will perform as many operations simultaneously as its architecture allows. This technique is referred to as concurrency. Performing measurements concurrently can greatly improve test throughput.

Operating Considerations

The test set has three parallel signal paths to improve measurement throughput.

  • Demodulation downconverter path.
  • Measurement downconverter path.
  • Power detector path.

Since measurements are DSP (digital signal processor) based, and there are four A/D converters available to digitize or "sample" the input signal for analysis by the DSP, the test set will always have the capability to perform one transmitter measurement, one receiver measurement, and maintain the radio link concurrently. The test set's ability to perform multiple transmitter, or multiple receiver tests concurrently will depend on the availability of resources within the test set and availability of the signal to be tested.

Concurrent Measurements for the W-CDMA Applications

This table shows the concurrency considerations for the W-CDMA applications.

W-CDMA Concurrency Considerations

W
W
Q		 W
T
P

W
T
D
P

 W
S
E
M		 W
P
P
A		 W
P
D		 W
O
O
S		 W
O
O
P		 W
O
B
W		 W
I
Q
T		 W
I
L
P		 W
E
D
P		 W
D
P
A		 W
C
T
F		 W
C
P		 W
C
D		 W
B
L		 W
B
E
R		 W
A
C
L		 S
M
O
N		 S
A
U
D

HRCQ

 H
B
L		 F
S
T		 D
T
M		 C
F
D
T		 A
F
G		 A
F
A
N
AFAN
(Audio Analyzer)		 B Y D B D D D D B B D D B D B B Y Y B B A

D

 Y B Y D Y ...
AFG
(Audio Generator)		 Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y E

Y

 Y Y Y Y ... ...
CFDTune
(Fast Device Tune)		 D D D D D D D D D D D D D D D D D D D D D

D

 D D Y ... ... ...
DTM
(Data Throughput Monitor)		 Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y

 Y Y ... ... ... ...
FST
(Frequency Stability)		 B Y D B D D D D B B D D B D B B Y Y B B B

D

 Y ... ... ... ... ...
HBL
(HSDPA BLER)		 Y Y D Y D D D D Y Y D D Y D Y Y B B Y Y Y

D

 ... ... ... ... ... ...

HRCQ
(Reporting of Channel Quality Indicator)

D

 D D

D

D

 D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

 ... ... ... ... ... ... ...
SAUD
(Swept Audio)		 B Y D B D D D D B B D D B D B B Y Y B B ... ... ... ... ... ... ... ...
SMON
(Spectrum Monitor)		 B Y D B D D D D B B D D B D B B Y Y B ... ... ... ... ... ... ... ... ...
WACL
(Adjacent Channel Leakage Ratio)		 B Y D B D D D D B B D D B D B B Y Y ... ... ... ... ... ... ... ... ... ...
WBER
(Loopback BER)		 Y Y D Y D D D D Y Y D D Y D Y Y A ... ... ... ... ... ... ... ... ... ... ...
WBL
(BLER)		 Y Y D Y D D D D Y Y D D Y D Y Y ... ... ... ... ... ... ... ... ... ... ... ...
WCD
(Code Domain)		 B Y D B D D D D B B D D B D B ... ... ... ... ... ... ... ... ... ... ... ... ...
WCP
(Channel Power)		 B Y D B D D D D B B D D B D ... ... ... ... ... ... ... ... ... ... ... ... ... ...
WCTF
(Change of TFC)		 D D D D D D D D D D D D D ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
WDPA
(Dynamic Power Analysis)		 B B D B D D D D B B D D ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
WEDP
(Extended Range Dynamic Power)		 D D D D D D D D D D D ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
WILP
(Inner Loop Power)		 D D D D D D D D D D ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
WIQT
(IQ Tuning)		 B Y D B D D D D B ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
WOBW
(Occupied Bandwidth)		 B Y D B D D D D ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
WOOP
(PRACH Transmit On/Off Power)		 D D D D D D D ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
WOOS
(Out-of-Synch Handling of Output Power)		 D D D D D D ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
WPD
(Phase Discontinuity)		 D D D D D ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
WPPA
(PRACH Preamble Analysis)		 D D D D ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
WSEM
(Spectrum Emission Mask)		 B Y D ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
WTDPower
(TX Dynamic Power)		 D D ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
WTP
(Thermal Power)		 Y ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
WWQ
(Waveform Quality)		 ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...

Table Key

Y: These measurements can operate concurrently with no conflicts.

A:  Cannot operate concurrently. The measurement which is initiated most recently will cause all other conflicting measurements to be closed.

B: These measurements share a sampler path. If multiple measurements are initiated at the same time, they will execute sequentially. However, if multiple measurements are configured to operate off the same trigger event and only a single occurrence of that event happens, only the first initiated measurement will complete .

D: When this measurement is initiated, all other measurements are closed.

E: Swept audio automatically adjusts the audio generator, therefore adjusting the audio generator's frequency while using swept audio will generate an error message. Also, once the swept audio measurement has completed, it does not reset the audio generator values back to what they were before it adjusted them.

Related Topics

Block Diagram