Hewlett-Packard 5890 II Plus Manual

A SERVICE OF

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Signal Output

Signal attenuation

75

From Table 5•3,note that for a TCD,

RANGE 2 ()

= 0 is suitable for

virtually all applications since the entire linear output range of the

detector is included. Likewise,

RANGE 2 ()

settings from 0 through 5 cover

the entire useful output range for an ECD. Only an FID or NPD may

require use of the higher

RANGE 2 ()

settings.

Displaying current

RANGE 2 ()

/

ATTN 2 ()

setpoints

Current setpoint value for

RANGE 2 ()

or

ATTN 2 ()

is displayed by

pressing the appropriate signal channel key (

SIG 1

or

SIG 2

), followed

by either

RANGE 2 ()

or

ATTN 2 ()

(or simply press

RANGE 2 ()

or

ATTN 2 ()

alone, if the desired signal channel is already displayed).

For example, the following key sequence displays current setpoint for

RANGE 2 ()

for the

SIG 2

output channel:

SIG 2

RANGE 2 ()

Typical displays that occur are shown in Figure 5•4.

ACTUAL SETPOINT

SIG 2 NOT INSTALLED

ACTUAL SETPOINT

SIGNAL 1 RANGE 10

SIGNAL 1 ATTN 10

ACTUAL SETPOINT

SIGNAL 1 ATTN 10 OFF

ACTUAL SETPOINT

Typical Signal Channel Displays

Figure 5-4