HP 8340B Manual page 20

HP-IB Address Access
1.
Press:
[SHIFT] [LOCAL]
This
lets
you see the HP-IB
address
in the
ENTRY DISPLAY.
2.
To change the HP-IB address (00
to 30):
a.
Rotate the front panel knob or use the keyboard entry.
b.
When the desired
address
is
set, press
[Hz]. The HP-IB
address
is changed, and the CHECK¬
SUM updated
(note that only the working data
is updated).
3.
To write protect the HP-IB address,
set
bit
5
of cal constant
#57
and lock out the
[SHIFT] [LOCAL]
function:
a.
Access the working data cal
constant #57 as described above.
b.
Set
bit 5 by adding
32
to
the
HP-IB address. Enter this value.
c.
Press [Hz].
Automatic SYTM to YTO Tracking (Power Optimization)
1.
To recalculate and store the working data checksum, and update the
SYTM GAIN calibration
constants (#9 through 12 and 50 through 53) for peak RF output power, press:
[SHIFT] [PEAK]
This also automatically turns off
the
CAL FAULT
indicator without performing an instrument
preset.
Working Data to Protected Data Transfer
1.
To recalculate
and store the working data checksum,
and
store working data as protected data,
press:
[SHIFT]
[MHz]
[1] [4] [Hz]
[SHIFT] [kHz]
[5] [3] [4] [9] [Hz]
This
is
the
only
way
to to update protected data.
If
this data transfer
fails,
the
message EEPROM
FAILURE, CAL NOT RESTORED
is displayed
in
the ENTRY DISPLAY.
Protected Data to Working Data Transfer
1.
To recall protected data
and store
it in
the working data
memory location, press:
[SHIFT] [1Hz] [1] [4] [Hz]
[SHIFT] [kHz] [1] [9] [4] [6] [Hz]2.
After
writing
over
the
working data, press [SHIFT] [PEAK] to optimize
instrument operation.
A-14
Assembly-Level Service Calibration Constants
HP 8340B/41B