Signal Output

Signal attenuation

Thus, signal output level at the +1 mV analog output may be set separately from that at the +1 V output.

Table 5•2gives values permitted for either function, and the output affected.

Table 5-2.

Valid Setpoints for RANGE 2!( )

ATTN 2!( )

 

 

Permitted

 

Key

 

Setpoints

Affected Output

RANGE 2!( )

 

0 to 13

Both +1 mV & +1 V

ATTN 2!( )

 

0 TO 10

Only +1 mV

 

 

 

 

OFF , ON

 

Note: ATTN 2!( )

functions only for the

+1 mV output, and acts on the

signal after it has been ranged by RANGE 2!( ) .

Generally, if both an integrator or A/D converter (+1 V output) and chart recorder (+1 mV output) are connected to the same signal channel, RANGE 2!( ) should be set properly first for the integrator or computer, then ATTN 2!( ) set appropriately for the chart recorder.

To minimize integration error for an integrator or A/D converter,

RANGE 2!( ) normally should be set to the lowest value possible, provided the largest peaks of interest do not exceed 1 volt. Attenuation functions at the integrating device or computer are then used to ensure that plotted peaks remain on scale.

RANGE 2!( ) selects and sizes a portion of the full dynamic range for the signal source assigned to an output channel. The portion selected is sized such that the highest possible value for the portion does not exceed maximum output voltage allowed for the given output (+1 mV or +1 V).

ATTN 2!( )

further selects and sizes a portion of the ranged signal for

the +1 mV output to ensure that the signal does not exceed +1 mV.

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