Keysight Technologies N5221A, Руководство по обслуживанию

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Keysight N5221A/22A Service Guide 5-13
Theory of Operation
Synthesized Source Group Operation
19–21 AD7–5 TTL I/O, address and latched data
22–23 AD0–1 TTL I/O, address and latched data
24 LDS TTL out, active low data strobe (1
μ
s min)
25 RLW TTL out, high = read, low = write
Table 5-2 HANDLER I/O Connector Pin Assignments
Rectangular 36-Pin Female Connector
Pin Numbers Name Function
1 GND 0 V, ground reference
2 INPUT1 TTL in, negative pulse (1 μ s min) latches OUTPUT1-2
3–4 OUTPUT1–2 TTL out, latched
5–12 Port A0–7 Out TTL out, latched
13–20 Port B0–7 Out TTL out, latched
21–24 Port C I/O TTL I/O, latched
25–28 Port D I/O TTL I/O, latched
29 Port C Status TTL out, low = input mode, high = output mode
30 Port D Status TTL out, low = input mode, high = output mode
31 Output Strobe
Write Strobe
TTL out, active low data write strobe (1 μ s min)
32 No connect Not used
33 Pass Fail TTL out, latched, indicates pass fail (programmable polarity)
34 +5 V +5 Vdc, 100 mA max.
Table 5-1 TEST SET I/O Connector Pin Assignments
DB-25 Female Connector
Pin Numbers Name Function