Anritsu ML2400A Series - Cal;Zero Menu

4-8 CAL/ZERO MENU The Cal/Zero menu es tab lishes the 0.0 dBm ref er ence cali bra tion and ze ro ing
of the sen sors. Re fer to Chap ter 5 for spe cific pro ce dures.
Zero/Cal This func tion ze ros and then sets the 50 MHz, 0.0 dBm ref er ence of the con -
nected sen sor. In dual sen sor sys tems with both sen sors connected, sen sor A or
B must be se lected.
Cal 0 dBm
[CAL]
Ref er ences the con nected sen sor to 0.0 dBm at 50 MHz. In dual sen sor sys tems
with both sen sors connected, sen sor A or B must be se lected.
Zero
[ZERO]
Ze ros the con nected sen sor. Ze ro ing a power sen sor com pen sates for noise and
ther mal EMF of the de vice un der test. It is rec om mended prior to tak ing im -
por tant power read ings in the bot tom 20 dB of a power sen sor’s dy namic
range. In dual sen sor sys tems with both sen sors connected, sen sor A or B must
be se lected.
RF ON/OFF
[RFCAL]
Turns the RF cali bra tor ON or OFF.
Ext V
[VZERO]
Ze ros the rear panel multi- purpose BNC con nec tor used for Volts per GHz con -
nec tion (Ana log In put). This will cali brate the units to read zero volts on this
BNC. Dur ing this op era tion the con nec tor should ei ther not be con nected to
any thing, or should be con nected to a 0 Volt source.
The rear panel volt age can be viewed by se lect ing
CHANNEL|INPUT|VOLTS , al -
though this does not have to be se lected in or der for the func tion to op er ate.
This cali bra tion is non- volatile and does not nor mally need to be per formed. In
the case of off sets be ing in tro duced by the us er’s setup, it is pos si ble to leave
the BNC ca ble con nected to zero out sys tem off sets, how ever the off set zero
range is lim ited to ap proxi mately 100 mV.
4-36 ML2400A OM
CAL/ZERO MENU OPERATION