HP 4284A - Page 82

Keylock Function
The HP 4284A has keyboard lo ck-out capability that disables
all front panel op eration except for the p ower LINE switch,
CONTRAST knob, 4
TRIGGER
5 key, and
NNNNNNNNNNNNNNNNNNNNNNN
KEYLOCK . This is useful when
you don't want the control settings changed, for example, if the
HP 4284A is performing bin sorting for a large number of capacitors.
Perform the following steps to disable all front panel op eration on the
MEAS DISPLAY page.
1. Move the cursor to the SYS MENU eld.
2. Press
NNNNNNNNNNNNNNNNNNNNNNNNNN
more 1/2 .
3.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNN
KEY LOCK (which is a toggle typ e softkey). The key mark
will be shown on the left side of
NNNNNNNNNNNNNNNNNNNNNNNNNN
KEY LOCK , and the Keys locked
message will b e displayed on the system message line.
4.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNN
KEY LOCK again, when you want to enable all front panel
keys again.
BIN No. DISPLAY
Page
When you press 4
DISPLAYFORMAT
5 , and
NNNNNNNNNNNNNNNNNNNNNNN
BIN No. , the BIN No.
DISPLAY page will be displayed. The bin sorting results are
displayed in large characters and the measurement results are
displayed in normal characters on the BIN No. DISPLAY page, and
the following measurement controls can be set from the BIN No.
DISPLAY page. (The eld in parenthesis is used when this control is
set.)
Comparator Function ON/OFF ( COMP )
System Menu( SYS MENU )
There are three elds on this page: < BIN No. DISPLAY > , COMP ,
and SYS MENU elds.
Each control is described in the following paragraphs.
This page also provides the following information in the monitor
areas (each monitor area lo oks like a eld, but is not). These
conditions can b e set from the MEAS SETUP page, and most
conditions can b e set from the MEAS DISPLAY page.
MeasurementFunction ( FUNC )
Measurement Range ( RANGE )
Test Frequency ( FREQ )
Oscillator Level ( LEVEL )
DC Bias ( BIAS )
Integration Time ( INTEG )
OPEN, SHORT, LOAD on/o setting conditions ( CORR )
The available elds and the softkeys which corresp ond to each eld
on this page are shown in Figure 3-9 and Figure 3-10.
DISPLAYFORMAT Menu 3-23