Specifications
PERFORMANCE TESTS
NOTE
DC
power for the bias interface simulator can be supplied from the
HP
4285A instead
of
from an external
DC
power supply. For further de-
tails, see paragraph 1-18,
SUPPLYING
DC
POWER
TO
THE SIMULATOR
on page 1-44.
3.
Interconnect the bias interface simulator and bias interface connector on the rear
panel of the HP 4285A with the bias interface cable
as
shown in Figure 1-18.
BIAS
IIF
SIMULATOR
DC
POWER
SUPPLY
To
BIAS CURRENT
INTERFACE
Connector
HP
4285A
I
DI
I~
DOD
DDDD~:
o
DOD'
OM
0
o
00000
o 0
DODD
0
Do~
o
Figure 1-18. Accessory Control I nterface Function Test Setup
4. Turn the
HP
4285A ON.
5.
Press the CATALOG/SYSTEM MENU key.
6. Press the 'SELF TEST' softkey
to
display the SELF TEST page.
7. Move the cursor
to
the TEST MENU field, using the
CURSOR
arrow keys.
8. Press the 7 and the ENTER keys
to
select the Accessory I/F I/O test.
I
CAUTION
I
DO
NOT EXECUTE ANY SELF TEST EXCEPT
FOR
THE
BIAS CURRENT I/F I/O
TEST
OR
THE
HP
4285A WILL BECOME INOPERATIVE.
1-32