TB 9-6625-2138-24
Figure 4. Jitter-total peak - equipment setup.
(8) Set TI switches as listed in (a) through (d) below:
CLOCK to 9600.
(a)
PATTERN to 1:1.
(b)
OFF/LOOP to OFF.
(c)
JITTER/TOTAL PEAK to TOTAL PEAK.
(d)
(9) Adjust pulse generator amplitude for +5V peak. If digital readout does not
indicate between 18 and 22 percent and oscilloscope channel 1 waveform is not at least a 2V
peak to peak square wave, perform b below.
(10) Set JITTER/TOTAL PEAK switch to JITTER. Digital readout will indicate
less than 3 percent.
(11) Disconnect all equipment.
b. Adjustments. Adjust A12R4 (fig. 1) for a 2 V p-p square wave on oscilloscope
channel 1, and a digital readout of 20 percent (R).
12. Dropout
a. Performance Check
CAUTION
To prevent damage to circuitry, be sure RS232 or RS232C
interface board is installed.