Aeroflex 2946A Instructions d'exploitation télécharger pdf (Page 215)

DIRECTIONAL POWER HEADS

A-8 46882-311D

Performance data - power head only

HF version UHF version

Frequency range: 1 MHz to 50 MHz. 25 MHz to 1000 MHz.

Power measurement (either direction) See Fig. 1-2. See Fig. 1-3.

Indication range for CW: 5 mW to 400 W. 5 mW to 400 W

at 25 to 520 MHz,

5 mW to 200 W

at 1000 MHz.

Indication range for PEP: 1 to 400 W. 1 to 400 W

at 25 to 520 MHz,

1 to 200 W

at 1000 MHz.

Maximum applied PEP: 1 kW. 1 kW

at 25 to 100 MHz,

200 W at 1000 MHz.

CW power accuracy The quoted figures apply when the Power Head is terminated

by a load which has a VSWR of 1.1:1 or better and within the

temperature range 18 to 26°C.

Calibration at 1 W (with

harmonics <-50 dBc):

±4.7% (±0.2 dB)

at 30 MHz.

±4.7% (±0.2 dB)

at 100 MHz.

Flatness: ±3.6% (±0.155 dB) ±5.9% (±0.25 dB)

at 1 to 50 MHz. at below 520 MHz,

±9.6% (±0.4 dB)

at 520 to 1000 MHz.

Linearity, relative to 1 W: ±3.5% (±0.15 dB) 3.5% (±0.15 dB)

±0.003% of maximum power

of Head, at 10 mW to 400 W.

±0.01% of maximum power of

Head.

Calibration, flatness and ±7% (±0.29 dB) ±8% (±0.35 dB)

linearity combined

(root of sum of squares):

±0.003% of maximum power

of Head.

±0.01% of maximum power of

Head, at 25 to 520 MHz,

±11% (±0.5 dB)

±0.01% of maximum

power of Head,

at 520 to 1000 MHz.

Effect of temperature outside 18 to 26

°C on calibration, flatness and

linearity:

<±0.2%/°C

(±0.008 dB/°C).

<±0.3%/°C

(±0.015 dB/°C)

at below 520 MHz,

<±0.5%/°C

(±0.02 dB/°C)

at 520 to 1000 MHz.

VSWR measurement See Fig. 1-3. See Fig. 1-3.

VSWR indication: 1.0 to 99.9. 1.0 to 99.9.

VSWR accuracy at 18 to 26°C: ±12.5% for 1.1:1 to ±16% for 1.1:1 to

2:1 (typically 3%), 2:1 (typically 5%),

±15% for 2:1 to 3:1 ±20% for 2:1 to 3:1

(typically 4%). (typically 6%).

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Aeroflex 2946A Instructions d'exploitation Page 215

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