Rohde & Schwarz SME02 - Option SM-B2 - LF Generator

SME Fitting the Options
1038.6002.02 1.6 E-13
Calculate calibration value The tuning voltage is generated by a 12b-bit-D/A converter which is
scaled such that a tuning voltage of 12 volts is generated with
calibration value (CALIBRATION DATA) 4000.
The calibration value is thus calculated from the tuning voltage (V
tun
)
as follows
CALIBRATION DATA = V
tun
× 4000 / 12
For checking purposes, the voltage at pin 16 of plug X22 on the
motherboard can be remeasured and corrected if necessary. A check
by means of frequency measurement may only be made after a
warm-up of 2 hours and against a calibrated reference.
Store calibration value
À Call menu UTILITIES-CALIB-REF OSC.
À Enter the calculated calibration voltage with CALIBRATION DATA
by means of the rotary knob or keypad.
À Select STORE CALIBRATION DATA
À Terminate entry using the [SELECT] key
The new calibration value is stored in the EPROM.
Note: The flash EPROM does not permit the deletion of individual
data. Thus new memory space is occupied for each calibration.
If there is no memory space available any more, the EPROM
must be cleared by an authorized service shop and be written
into anew. Thus a calibration should only be made if necessary
1.3.4 Option SM-B2 - LF Generator
Fitting as 1st generator As 1st generator, the LF generator is fitted at one of the rear slots A5,
A6 or A12.
À Withdraw jumper X29 at the front top of the motherboard.
À Plug jumper X3 at position 2-3 (on the right) on the option (to the
right of multipoint connector X50).
Fitting as 2nd generator If there already is a generator at one of the slots A5, A6 or A12, the LF
generator is mounted at slot A4.
À Withdraw jumper X28 on the motherboard.
À Plug jumper X3 at position 1-2 on the option.