User guide

Zeroing the Sensor
The zero feature improves low-level accuracy by removing measured system noise. Cal
Factors correct both efficiency and mismatch loss. The frequency information must be en-
tered to obtain the correct calibration factor.
Using Attenuators
When necessary, attenuators should be used to ensure that the power does not exceed the
specified measurement range. The Offset dB feature can be used to enter the value of any
cables and attenuators.
Power Measurement
Required Equipment
q
S331D Site Master
q
RS232 Serial Cable
q
Anritsu Power Supply
q
PSN50 or MA24104A Power Sensor
q
30 dB, 50W, bi-directional, DC-8.5 GHz, N(m)-N(f), Attenuator, 3-1010-123
Procedure
Step 1. Connect the RS232 serial cable between the sensor and the Site Master serial
port.
Step 2. Connect the DC power supply to the DC input of the PSN50 or MA24104A.
Step 3.
Press the ON/OFF key on the Site Master.
Step 4.
Press the MODE key.
Step 5. Use the Up/Down arrow key to select
High Accuracy Power Meter mode and
press ENTER.
6-2
Chapter 6 High Accuracy Power Meter
HOLD
RUN
START
CAL
AUTO
SCALE
SAVE
SETUP
RECALL
SETUP
LIMIT
MARKER
SAVE
DISPLAY
RECALL
DISPLAY
PRINT
MODE FREQ/DIST
AMPLITUDE
MEAS/DISP
SYS
ENTER
CLEAR
ESCAPE
ON
OFF
/
1
2
4
5
6
7
8
9
0
3
+
-
.
MT8212A
CellMaster
S332D
ATTENUATOR
DUT
RF
OUT
PSN50 SENSOR
DC SUPPLY
MA24104A SENSOR
LOAD
Figure 6-2. High Accuracy Power Meter Setup