HP Saw E4419B Manuale Utente Scaricare il pdf (Pagina 90)

HP4402.book : chapter2.fm 50 Fri Feb 12 15:32:45 1999

Power Meter Operation

Setting Measurement Limits

2-50 HP E4419B User’s Guide

To set the TTL Output:

1. Press , , . The current settings for the

TTL Output are displayed under the , and

softkeys.

2. To select whether the TTL output reﬂects an overlimit condition,

under limit condition or both, press . Use any of the four

arrow keys to make a selection between , , and

on the pop up menu that appears.

3. To select whether a high or low level TTL output represents a

limits failure, use the softkey to toggle between

and

TTL Outputs can be disabled and re-enabled simply by pressing

Checking for Limit Failures

Limit failures are displayed in the appropriate ﬁeld in the measurement

window on the power meter’s display as shown in Figure 2-14.

Note The same limit fail ﬁeld is used by both channel and window

limits.

Meas

Setup

Limits TTL Output

TTL Output Limits

Fail O/P

Limits

OVER UNDER

EITHER

Fail O/P High

Low

TTL Output Off On

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HP Saw E4419B Manuale Utente Pagina 90