Specifications

11-31
Performance Tests
Pattern Verification
Pattern Verification
This test only applies to HP 71612 option UHF systems. With the equipment connected as
shown in Figure 11-13, press on the HP 70004A display.
1. Set the CLOCK frequency to 100 Mb/s. Ensure that the error detector is in sync and
the error count/ratio is 0 (error and sync loss flags on the display should be off).
2. Repeat 1 for all other PRBS patterns.
3. Repeat 1 and 2 for data rates of 1, 4.5, 9 and 12 Gb/s (12.5 Gb/s for the 70843C).
Floppy Disk Read/Write
1. Insert a blank unformatted high density floppy disk into the disk drive.
2. Use the format command in the pattern generator and ensure the disk formats with no
errors. (Select , , )
3. Edit a user pattern and save it to DISK PATT 5.
4. Erase the current pattern and load DISK PATT 5, ensure that the pattern which was
saved is now the current pattern.
5. Repeat steps 3 to 4 for DISK PATTS 6 through 12.
6. Change the data rate to 9, 4.5, 1 Gb/s and 100 Mb/s in turn and ensure that the error
detector syncs up with no errors in all cases.
Residual Error Rate Test
Configure the equipment as in Figure 11-15.
1. Press followed by and set the output frequency to
12 GHz. This will set the HP 71612 to 2^31−1PRBSpatternat12Gb/s.
2. Allow the setup to run for 12 hours and check the error rate on the display after this
period. The error rate should be <10
-14
.
NOTE This test takes 12 hours to complete and may be performed after all
other tests (including parametric testing) have been completed if
necessary.
INST PRESET
pattern
disk utils FORMAT DISK
INST PRESET clock output