TB 9-6625-2338-24
Table 6. Risetime
Test instrument
indications
Output
Mode
Max
1
T0
ECL
2 ns
T0
TTL
3 ns
A
ECL
2 ns
A
TTL
3 ns
B
ECL
2 ns
B
TTL
3 ns
+AB
ECL
2 ns
1
+AB1
TTL
3 ns
C
ECL
2 ns
C
TTL
3 ns
D
ECL
2 ns
D
TTL
3 ns
+CD
ECL
2 ns
1
+CD1
TTL
3 ns
1Set
trigger rate to 10 kHz for +AB and +CD outputs only.
12. Delay Time Accuracy
a. Performance Check
(1) Using two cables of equal length connect TI T0 output to frequency counter
channel INPUT A and TI A output to frequency counter channel INPUT B.
(2) Press TI keys as listed in (a) through (c) below:
(a) RECALL, 0, EXC.
(b) 4 (cursor left), 4.
(c) DELAY, NUM/REM, 1, EXC.
(3) Configure frequency counter for an interval A to B measurement with gate time
set to 100 seconds.
(4) Frequency counter will indicate within limits specified in first row of table 7.
(5) Press TI keys; 100, EXP, , 3, EXC.
(6) Set frequency counter gate time to 10 seconds.
(7) Frequency counter will indicate within the limits specified in second row of table 7.
(8) Repeat technique of (5) and (6) above for remaining settings listed in table 7.
Frequency counter will indicate within the limits specified.
(9) Press TI keys as listed in (a) through (d) below:
Press; 100, EXP, , 6, EXC.
(a)
DELAY, NUM/REM, 150, EXP, , 6, EXC.
(b)
DELAY, NUM/REM, 200, EXP, , 6, EXC.
(c)
DELAY, NUM/REM, 250, EXP, , 6, EXC.
(d)
