Keysight Technologies 8494, Руководство по эксплуатации и обслуживанию

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4 Operating Guide
26 Keysight 8494/95/96A/B Operating and Service Manual
Procedure
1 Connect equipment as shown in Figure 2 on page 23 with the attenuator set to
0 dB attenuation.
2 Set the test oscillator to 0.3 Vrms at 1 kHz.
3 Set the SWR meter range to 2 dB (expanded) [or for the 8494A/B to 10 dB
(expanded)] and adjust its bandwidth to the center of the adjustment range.
Fine-tune the oscillator frequency to obtain maximum meter indication.
4 Set the attenuator and the SWR meter range switch as listed in Table 4-2 and
verify that the SWR meter indicates within the limits shown.
Table 4-2 Attenuator and SWR settings
SWR meter range
(dB)
Attenuation (dB) Meter indication (dB)
Minimum Actual Maximum
8494A/B 8495A/B
8496A/B 8494A/B 8495A/B 8496A/B 8494A/B
8495A/B
8496A/B 8494A/B
8495A/B
8496A/B 8494A/B
8495A/B
8496A/B
10 2 0 0 0 — — Set to 0.0 Set to 0.5 — —
10 6 1 10 10 0.40 1.40 — — 0.60 1.60
10 12 2 20 20 0.90 0.30 — — 1.10 0.70
10 16 3 30 30 1.35 1.25 — — 1.65 1.75
10
[a]
22 4 40 40 1.85 0.15 — — 2.15 0.85
12 26 5 50 50 0.35 1.10 — — 0.65 1.90
12 32 6 60 60 0.85 0.00 — — 1.15 1.00
12
36
[a]
7 70 70 1.30 0.90 — — 1.70 2.10
12
[a]
42
[a]
8 — 80 1.80 –0.15 — — 2.20 1.15
14
46
[a]
9 — 90 0.30 0.75 — — 0.70 2.25
14
52
[a]
10 — 100 0.80 –0.30 — — 1.20 1.30
14
56
[a]
11 — 110 1.75 0.60 — — 1.75 2.40
[a] Adjust range by 2 dB, if needed, to obtain an on-scale indication.