Agilent Technologies 83236B, Operating Manual, Page: 88 / 164

88
Chapter 3, Programming the PCS Interface using GPIB Control
Set Up and Measure
NOTE: If the Immediate trigger is used, up to 48000 samples can be collected by the combination
of the LENGTH and AVERAGE values.
1. The total number of points used in the power measurement determines the accuracy achieved.
The measurement accuracy is:
Where:
N = total number of points used, or LENGTH*AVERAGE from the table above
2. The PCS Interface’s power detector sample rate is 80 kHz. For the US TDMA symbol rate of
24.3 kHz, this implies 3.29 samples/symbol. The values for IGNORE and LENGTH provide
power measurements compliant with the IS-137 specification of at least 140 symbols between
symbols 6 and 162 in the burst.
Table 9 Example power measurement set ups for typical applications
TX:INP:POW:PDET:SAMP TX:INP:POW:TRIG
:IGN
(IGNORE)
:LENG
(LENGTH)
:AVER
(AVERAGE
)
TRIGGERING
TYPE
A
pplica
tio
n
CDMA
Base Station
— 4800 4 IMM (Immediate)
CDMA
Subscriber Unit
— 4800 4 IMM (Immediate)
TDMA
Base Station
—
See footnote
1
1 IMM (Immediate)
TDMA
Subscriber Unit
2
See
footnote
3
461 See footnote
1
EXT (External)
TDMA
Subscriber Unit
2
(Signals >
−
5 dBm)
17 461 See footnote
1
AMPTD (Amplitude)
± 5%
180
N
---------- µ
W
[ ]
This applies @ 23 ± 10 degrees C
±
± 10%
180
N
----------
µ W
[ ]
This applies @ 0 to 55 degrees C
±