HP 4284A - Page 129

Cable Length Selection
Description
The HP 4284A has two reference planes|to the UNKNOWN
Terminals (0m), and to the end of the HP 16048A/B test leads (1m).
When Option 006 (2m/4m Cable Length Operation) is installed, the
HP 4284A has four reference planes|to the UNKNOWN Terminals
(0m), to the end of the HP 16048A/B Test Leads (1m), to the end
of the HP 16048D test leads (2m), and to the end of the HP 16048E
test leads (4m). Measurement accuracy is sp ecied at these p oints.
When you select 0m, the four outer conductors of the H
POT
,H
CUR
,
L
POT
, and L
CUR
test leads must b e tied together at the UNKNOWN
terminals.
When you select 1m, the four outer conductors of the H
POT
,H
CUR
,
L
POT
, and L
CUR
test leads must b e tied together at the end of the
HP 16048A/B 1m leads.
When you select 2m, the four outer conductors of the test leads must
be tied together at the end of the HP 16048D 2m test leads.
When you select 4m, the four outer conductors of the H
POT
,H
CUR
,
L
POT
, and L
CUR
test leads must b e tied together at the end of the
HP 16048E 4m test leads.
In other words, the four-terminal pair conguration must
be terminated for the cable length selected. When an
HP 16048A/B/D/E test leads are used, use the furnished terminal
plate at the end of the cable for easy conguration.
Front Panel For Selecting the Cable Length
Perform the following steps to select the cable length.
1. Move the cursor to the CABLE eld. The following softkeys will
be displayed.
NNNNNNNNNNN
0m
NNNNNNNNNNN
1m
NNNNNNNNNNN
2m
NNNNNNNNNNN
4m
2. Select and press a softkey to select the cable length.
System Menu
The system menu on this page allows you to perform the following
control functions.
Printer
This function is the same as the functions on the system menu on the
MEAS DISPLAY page. (A description of this function is giv
en in
\System Menu" in Chapter 3.) So only the pro cedure is giv
en in the
following paragraphs.
4-32 MEAS SETUP Menu