Tektronix WFM601, Service Manual

Page: 48 / 304

Installation
2–16
WFM 601 - Service Manual
CAUTION. The disk is not write protected in order to execute “NV SAVE”. Do
not place in write protect mode.
c. At the
DOS
prompt, type “B:” and
ENTER.
d. Type
“NVSAVE”
and
ENTER
. When asked for the
COM
port, respond with
the number of the port you are using. (If you enter an incorrect port
number, you will be prompted to try again.)
e. Wait for the message that the program execution is completed.
f. Note: This program stores the following temporary files on the floppy
disk:
CALS.TMP
(calibration constants),
PRESET.CUR
(instrument’s
current front-panel setup),
PRESET.001–009
(user-defined presets), and
PRESET.FCT
(factory-defined preset).
2.
Run
CONVERT
(Execution time <1 minute)
a. Type “
CONVERT
” and ENTER.
3.
Prepare Waveform Monitor for Upgrade
a. Turn instrument power to STANDBY.
WARNING. When power is supplied, line voltage will be present in the instru-
ment, even if the
POWER
switch is set to
STANDBY .
b. Move the plug jumper on J4 (Main board) to pins 1 and 2 (the pins
closest to U14).
c. Set switch 4 of SW1 to the open position. (SW1 is the red switch on the
Main board, near the front of the instrument.)
d. Turn on the instrument and allow it to boot (wait a few moments until
the WFM 601 CRT and front-panel LEDs are illuminated as for normal
operation).
4.
Run UPGRADE
(Execution time
12 minutes)
NOTE . If a power loss to either the PC or the WFM 601 occurs during execution
of the software loading, the instrument may lock up and not restart normally. A
special recovery procedure can be found on page 2–17, should this problem
occur.
a. Be sure that
NVSAVE
was executed (step 1).