Check Sweep Inhibit - Tektronix 7B51 Instruction Manual

TABLE 5-3
-
Type 7B51 Type 184 Markers/
Allowable
TlME/DIV Markers
Div Error
.05 ]ls 50 ns 1
±0.16div
.1 ]lS .1 ]lS 1
±0.16div
.2 ]lS .1 ]lS 2 ±0.16div
.5 ]ls
.5 ]ls 1 ±0.16div
1 ]ls 1 ]ls 1
±0.16div
2 ]ls 1 ]lS 2 ±0.16div
5 ]ls 5 ]ls 1
±0.16div
10 ]ls 10 ]ls 1
±0.16div
20 ]lS 10 ]ls 2 ±0.16div
50 ]ls
50 ]ls 1 ±0.16div
.1 ms .1 ms 1 ±0.16 div
.2ms .1 ms
2 ±0.16div
.5 ms .5 ms 1
±0.16div
- ,
1 ms
1 ms 1 ±0.16div
2 ms 1 ms 2 ±0.16div
5 ms 5 ms 1
±0.16 div
_._.-
10 ms
10 ms 1 ±0.16 div
- , - - - - - - - - - ----_.- ------_.-
20 ms
10 ms 2 ±0.16div
50 ms 50 ms 1 ±0.16div
-
.1 s .1 s
1 ±0.16div
.2 s
.1 s 2 ±0.16div
.5 s .5 s 1
±0.16div
1 s
1 s 1 ±0.24 div
- - - - -
2s 1 s 2 ±0.24 div
5s 5s 1
±0.24 div
b. CHECK-Using the TIME/DIV and time-mark genera-
tor Settings given in Table 5-4, check that sweep timing
accuracy over the center eight divisions is within the allow-
able limits.
c. Reset the MAGNIFIER to XL
18. Check Sweep Inhibit
a. Set the time-mark generator for 1 ms markers.
b. Set the Type 7B51 TRIGGERING MODE to NORM,
TIME/DIV to 50 ]lS and adjust the LEVEL/SLOPE control
for a triggered sweep.
c. Reset the Type 7504 Horizontal Mode to A; set the
Test Time-Base Triggering Mode to Norm, Time/div to 1 ms
and adjust Level Slope control for a triggered display.
d. Reset the Test Time-Base B Display Mode to B Starts
After Delay.
®
Performance Check/Calibration-Type 7B51
e. CHECK-While rotating the Test Time-Base Delay
Time Multiplier dial, check that the intensified portion may
be positioned to any part of the sweep.
f. Reset the Test Time-Base B Delay Mode to B Trigger-
able After Delay.
g. CHECK-Turn the DELAY TIME MULTIPLIER dial
and check that the intensified portion always starts at one
of the 1 ms markers.
DELAY TIMING
Place the Test Time-Base in the indicator oscilloscope
right (B) horizontal compartment and the Type 7B51 in the
left (A) horizontal compartment. Change the control set-
tings as follows:
TABLE 5-4
Type 7B51
Type 184 Markers Allowable
TIME/DIV
Markers Div Error
5s
.5s 1
±0.36 div
2s .1 s
2 ±0.36 div
1 s .1 s
1 ±0.36 div
.5 s
50 ms 1
±0.2 div
.2 s 10 ms
2 ±0.2 div
.1 s
10 ms 1. ±0.2 div
50 ms 5 ms 1
±0.2 div
20 ms 1 ms
2 ±0.2 div
10 ms
1 ms 1 ±0.2 div
5ms .5 ms 1
±0.2 div
- - -
---
2 ms .1 ms 2
±0.2 div
1 ms .1 ms 1 ±0.2 div
.5 ms
50 ]ls 1 ±0.2 div
.2 ms 10 ]ls 2
±0.2 div
.1 ms 10 ]lS 1
±0.2 div
50 ]ls
c---
5 ]ls 1 ±0.2 div
20 ]ls 1 ]ls 2
±0.2 div
10 ]lS 1 ]ls 1 ±0.2 div
5 ]ls .5 ]ls 1
±0.2 div
2 ]ls
.1 ]ls 2 10.2 div
-- --
1 ]ls .1 ]ls 1 ±0.2 div
.----~--
1--50 ns
1
±0.2 div
.5 ]ls
-
.2 ]ls
20 ns 1 ±0.2 div
.1 ]ls 10 ns 1
±0.2 div
- - - -
.05 ]ls 5 ns
1
1
±0.2 div
lType 184 H.F. Selector Output
5-11