Agilent Technologies N5230C Manuale di Servizio Scaricare il pdf (Pagina 134)

5-12 Service Guide N5230-90025

Theory of Operation PNA Series Microwave Network Analyzers

Synthesized Source Group Operation N5230C

Table 5-3 TEST SET I/O Connector Pin Assignments

DB-25 Female Connector

Pin Numbers Name Function

1 SEL0 TTL out, test set select bit 0, tied to 0 V

2 Sweep Holdoff In TTL in, low level holds off sweep

3–6 AD12–AD8 TTL I/O, address and latched data

7 GND 0 V, ground reference

8 LAS TTL out, active low address strobe (1 s min)

9–11 AD4–AD2 TTL I/O, address and latched data

12 GND 0 V, ground reference

13 Interrupt In TTL in, low level (10 s min) aborts sweep

14 +22 V +22 Vdc, 100 mA max.

15–16 SEL1–2 TTL out, test set select bits 1-2, tied to 0 V

17 AD11 TTL I/O, address and latched data

18 SEL3 TTL out, test set select bit 3, tied to 0 V

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 s min)

25 RLW TTL out, high = read, low = write

1 2 ... 129 130 131 132 133 134 135 136 137 138 139 ... 295 296

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Agilent Technologies N5230C Manuale di Servizio Pagina 134