Racal Instruments 3162A/B, User Manual

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User Manual 3162A/B
Maintenance and Performance Checks 5-28
Table 5-4 Engine Board Checkout – Continuous Operating Mode Checks
S t e p Engine Board A Test Points Expected Result
1 U12, U13, U20, U21, U28, U29,
U36, U37, U44, U45, U52, U53
Pins 9, 10, 11, 12, 18, 19, 20,
21, and 24
78.125 KHz ECL level clock
2 U85 pin 5 Negative going ECL level pulses, period 800 ns, pulse
width 100 ns
3 U63, U65 – U73 pin 2 Negative going TTL level pulses, period 800 ns, pulse
width 200 ns
4 U63, U65 – U73 pin 9 Negative going TTL level pulses, period 12.8
µ
s, pulse
width 800 ns
5 J6 10 MHz ECL level square waveform
6 U12, U13, U20, U21, U28, U29,
U36, U37, U44, U45, U52, U53
Pin 13
10 MHz ECL level square waveform
7 U12, U13, U20, U21, U28, U29,
U36, U37, U44, U45, U52, U53
Pin 17 Negative going ECL level pulses, period 800 ns, pulse
width 100 ns
Engine Board B Test
Points
8 U23, U24, U31, U32, U39, U40,
U47, U48, U55, U56, U63, U64
Pins 9, 10, 11, 12, 18, 19, 20,
21, and 24 78.125 kHz ECL level clock
9 U70 – U79 pin 2 Negative going TTL level pulses, period 800 ns, pulse
width 200 ns
10 U70 – U79 pin 9
Negative going TTL level pulses, period 12.8
µ
s, pulse
width 800 ns
11 U23, U24, U31, U32, U39, U40,
U47, U48, U55, U56, U63, U64
Pin 13 10 MHz ECL level square waveform
12 U23, U24, U31, U32, U39, U40,
U47, U48, U55, U56, U63, U64
Pin 17 Negative going ECL level pulses, period 800 ns, pulse
width 100 ns