HP 214B - Page 29

Model 214B
PERFORMANCE TESTS
2. Adjust 214B PERIOD VERNIER for exactly 1000ns re adi ng on counter and measure output
pulse width . RESULT : typically 80ns. (8%) . Fi xe d duty cycle is indicated by LED.
3. Select 1/15 - 10/15 PERIOD range and adjust PERIOD for 10 OOOns. (2. 5-10 % duty cycle
range
is indicated by LED).
4. Set DUTY CYCLE VERNIER (WIDTH VERNIER) to 2.5 and measure pulse width.
R ESU L T : 202.5 - 297.5ns.
5. With VERNIER set to 10 width should be 840 - 1160ns.
NOTE : Trigger Sampling Oscilloscope EXT after adjusting PERIOD with Counter/ Timer .
214B
COUNTER / TIMER
011 110 0 0
00
Figure 4-7
6. Change Test Setup as shown in Figure 4-7 and set 214B controls as follows :
MODE . .. ....... ...... .... .. . .... . .. . . . NORM
PERIOD Range ........ ...... . . ... ..... .
PERIOD Vernier
.... .. .. .. .. .. . ..... . .. . .
POSITION Range
...... ..... . ........ ... ... .
POSITION Vernier
.. . ........ .... . ......... .
DUTY CYCLE % .. .. ....... ... . .. .... ... .
DUTY CYCLE Range
DUTY CYCLE Vernier
AMPLITUDE Range .. . ... .. ... ........ .. . .
AMPLITUDE Vernier .. . .. . . ... ......... . .. .
INT LOAD ............... . .... . .... ... .
SLOPE
..... ....... . ...... .... . .. .. . . .
DELIADV /D.P. . ... ..... ............. . ... .
OUTPUT POLAR ITY
* = don't care
10m - .1
10
10n - .
1/1
10
Depressed
.1 - 1
1
1-3
3 (3V)
*
*
DEL
POS
7. Trigger Counter/Timer channel A to J and channel B to \.... Switch to PERIOD and
adjust 214B PERIOD
for exactly 100.0ms.
8. Set 214B DUTY CYCLE VERNIER exactly to 1 (.1 %) and switch Counter/Timer to Time
Interv. A to B . RESULT: 75 - 125/15 .
9. Set
DUTY CYCLE VERNIER exactly to 10 (1 %) and measure pulse width . RESULT : 840 -
1160/1
5.
Performance Tests
4-11
Scans by Artekmedia => 2009