HP 5004A, Operating And Service Manual

Page: 23 / 74

Model
Operation
3-16. INSTRUMENTS BLE
3-17. The is used to check the operation of electronic digital logic instruments with
built-in capability to be tested with the signature analysis method. Instruments to be checked
by the
must be compatible with the Refer to the specifications and other details
in Section I of this manual for compatibility information.
3-18. OPERATING INSTRUCTIONS
3-19. Figure 3-3 shows operating procedures for the Signature Analyzer. Refer to the
instruction manual of the instrument to be tested for detailed steps for use of the Signa-
ture Analyzer.
OPERATING INSTRUCTIONS
Before applying power to the study and learn the information given in Figure
Front Panel Features and perform the Operators Self-Test in Figure 3-2.
2. Refer to the instruction manual for the instrument or system to be tested.
NOTE
Correct (expected) "signatures" for the device under test
(D.U.T.) must be known for proper use of the
Signa-
tures will usually be in the troubleshooting section of the
D.U.T. manual.
3. Connect the START, STOP, CLOCK, and GND test inputs the pod to the
specified test points of the D.U.T. (Refer to D.U.T. manual.)
Set the front panel and
select) switches as stated in the D.U.T. manual.
NOTE
The edge select switches allow flexibility in selection of START
and STOP signals. For example, one long pulse can be used
for both START and STOP if the rising edge is START and the
falling edge is STOP.
NOTE
The (11) HOLD and (10) SELF-TEST switch buttons should
normally be in the out position.
5. Use the Data Probe to check the signature nodes of the D.U.T.. and compare
the signatures found with the signatures given in the D.U.T. manual.
NOTE
Especially when slow clock signals are used, the first one or
two signatures displayed may be wrong. Two successive identi-
cal signatures indicate the signature of that point.
6. one or more incorrect signatures are found, refer to the troubleshooting procedures in
the DUT manual.
NOTE
most or all signatures are incorrect, check the preliminary
settings given in the DUT manual.
NOTE
Using the HOLD function (HOLD switch in) allows observ-
ation of a signature occurring once. PROBE
RESET switch will erase a HELD signature.)
Figure 3-3. Operating Instructions (Continued)