Technical data

2-5

Front/Rear Panel

Analyzer Display

2. Stimulus Stop Value. This value could be any one of the following:

• The stop frequency of the source in frequency domain measurements.

• The upper limit of a power sweep.

When the stimulus is in center/span mode, the span is shown in this space. The stimulus values can be

blanked, as described under the FREQUENCY BLANK, softkey in Chapter 4, “Hardkey and Softkey

Reference”. (For CW time and power sweep measurements, the CW frequency is displayed centered

between the start and stop times or power values.)

3. Status Notations. This area shows the current status of various functions for the active channel.

The following notations are used:

∆ Previous autobias value is used and autobias is switched on.

Aut Correct autobias value is used and autobias is switched on.

Avg Sweep-to-sweep averaging is on. The averaging count is shown

immediately below. (See the Avg, key in Chapter 4, “Hardkey and

Softkey Reference”)

A/W Units of calibrated O/E measurements.

Cor Error correction is on. (For error-correction procedures, refer to the

“Calibrating for Increased Measurement Accuracy” chapter in the

user’s guide. For error correction theory, refer to Chapter 5,

“Operating Concepts”.

∆ Stimulus parameters have changed from the error-corrected state, or

interpolated error correction is on. (For error-correction procedures,

refer to the “Calibrating for Increased Measurement Accuracy”

chapter in the user’s guide. For error correction theory, refer to

Chapter 5, “Operating Concepts”.

C2 Full two-port error-correction is on and the reverse sweep is not

updated each sweep.

Any one of the following causes the reverse sweep not to be updated

each sweep:

• the instrument uses a mechanical switch.

• different channel power ranges (PORT POWER UNCOUPLED)

which puts the test set switch in HOLD mode.

• the user manually puts the test set switch in HOLD mode

(TESTSET SW 0 or >1).

dBe Dedicated measurement E/O, O/E, or E/E.

dBo Optical measurement only (O/O).

Del Electrical delay has been added or subtracted, or port extensions are

active. (See “Operating Concepts” on page 5-1 and the Scale Ref,

key in Chapter 4, “Hardkey and Softkey Reference”)

ext Waiting for an external trigger.

Hld Hold sweep. (See HOLD, in Chapter 4, “Hardkey and Softkey

Reference”)

man Waiting for manual trigger.