Anritsu ML2400A Series - Sensor Zero;Cal

On suc cess ful com ple tion of the calibration op era tion, the buzzer
sounds.
If the sensor fails the calibration op era tion, the message
SENSOR x
CAL 0 dBm in valid is dis played.
Any er ror con di tions en coun tered dur ing calibration, for ex am ple the
pres ence of ex tra ne ous noise or RF sig nals, will re sult in an er ror mes -
sage on the front panel dis play.
The sen sors can also be cali brated us ing the GPIB CAL com mand (see
Chap ter 6, GPIB Op era tion).
5-5 SENSOR ZERO/CAL Sen sors must be ze roed bef ore be ing cali brated. The Zero/Cal func tion
com pletes both op era tions in sequence.
To zero and calibrate the sen sor, con nect the sen sor to the ML2400A
Se ries 50 MHz, 0.0 dBm ref er ence out put connector la beled
CALI BRA -
TOR .
When the sen sor is first at tached, the message
SENSOR x NOT ZE RO -
ED (where x = A or B as ap pro pri ate) is dis played.
Press the
Cal/Zero front panel key and the Zero/Cal func tion key, then
se lect the ap pro pri ate sen sor. The mes sage changes to
SEN SOR x
ZERO . . . Note that the power me ter auto mati cally switches the ref er -
ence cali bra tor OFF dur ing the ze ro ing op era tion.
If only one sen sor is con nected, the A-B se lec tion is not dis played and
the ze ro ing pro cess be gins im me di ately.
On suc cess ful com ple tion of the ze ro ing op er a tion, the cal i bra tion pro cess
be gins.
On suc cess ful com ple tion of the cal i bra tion op er a tion, the buzzer sounds and
the mes sage is cleared.
If the sen sor fails ei ther op er a tion, the mes sage
SENSOR x ZERO fail nxnnn or
Sen sor x Cal fail nxnnn is dis played. The hex a dec i mal er ror code 'nxnnn ' in di -
cates the rea son for the fail ure.
The sen sors can also be ze roed and cal i brated us ing GPIB com mands (see
Chap ter 6,” GPIB Op er a tion”).
ML2400A OM 5-3
PROCEDURES SENSOR ZERO/CAL
ML2400A
Cal/Zero Zero/Cal Sen sor A
Sen sor B
Figure 5-3. Sen sor Zero/Cal Key Sequence