Tektronix 492 - Page 18

Specification—492/492P Service Vol. I (SN B030000 & up)
Table 1-1 (cont)
Characteristic
Performance Requirement
Supplemental Information
IF Frequency, LO Range
and Harmonic Number (n)
Band and Freq Range
LO Range (MHz) and 1st IF
Harmonic (n) (MHz)
1 (0 — 4.2 GHz)
2072 — 6272 (1 -)
2072
2(1.7 — 5.5 GHz)
2529 — 6329 (1 -)
829
3(3.0 — 7.1 GHz)
2171 — 6271 (1+)
829
4(5.4 — 21.0 GHz)
2072 — 6276 (3-)
829
5(15 — 21 GHz)
4309 — 6309 (3 + )
2072
6(18 — 26 GHz)
2655 — 3988 (6 + )
2072
7 (26 — 40 GHz)
2443 — 3793 (10 + )
2072
8 (40 — 60 GHz)
3792 — 5790 (10 + )
2072
9 (60 — 90 GHz)
3861 — 5862 (15 + )
2072
10(90 — 140 GHz)
3823 — 5997 (23 + )
2072
11 (140 — 220 GHz)
3728 — 5890 (37 + )
2072
AMPLITUDE RELATED
Display Modes
10 dB/Div, 2 dB/Div, Linear, and
Delta A.
Display Reference Level
Range
— 123 dBm to +40 dBm (+40 dBm includes
10 dB of IF gain reduction). +30 dBm or 1 W is
the maximum safe input for 10 dB/DIV and
2 dB/DIV log modes. 20 nV/Div to 2 V/Div (1 W
maximum safe input) in linear mode.
Steps
10 dB, 1 dB, and 0.25 dB for relative
(Δ) measurements in log mode. 1 -2-5
sequence and 1 dB equivalent increments
in LIN mode.
Accuracy
Accuracy is a function of the RF attenuation, IF
gain, resolution bandwidth, display mode, refer
ence level, frequency band and response. Refer
to accuracies of these characteristics
The input RF attenuator steps 10 dB for refer
ence level changes above —30 dBm or
—20 dBm when MIN NOISE mode is active un
less the MIN RF ATTEN setting is greater than
normal. The IF gain increases 10 dB for each
10 dB reference level change below —30 dBm
(-2 0 dBm for MIN NOISE mode).
REV JUN 1982
1-7