ATTN 2!( )
alone,

Signal Output

Signal attenuation

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

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.

Figure 5-4

 

 

 

ACTUAL

SETPOINT

SIGNAL

1

RANGE

 

10

 

 

 

ACTUAL

SETPOINT

 

 

 

 

 

SIGNAL

1

ATTN

 

10

 

 

 

ACTUAL

SETPOINT

 

 

 

 

 

SIGNAL

1

ATTN

10

OFF

 

 

 

ACTUAL

SETPOINT

 

 

 

 

SIG 2

 

NOT

INSTALLED

 

 

 

 

 

Typical Signal Channel Displays

75