Ametek 7280 Instruction Manual page 83

input, then the value of LOG RATIO would be:-
LOG RATIO
LOG RATIO
The relationship between the voltage at the CH1/CH2 connector and the
LOG RATIO value is defined as follows:-
LOG RATIO
+2.000
0
-3.000
Note: If RATIO < 0 then LOG RATIO = -3.000
EQUATION #1
When set to EQUATION #1 the corresponding CH1/CH2 connector on the rear
panel will output a voltage related to Equation 1, which is defined using the
Output Equations menu (see section 5.3.08), as follows:-
EQUATION #1
+10000
0
-10000
EQUATION #2
When set to EQUATION #2 the corresponding CH1/CH2 connector on the rear
panel will output a voltage related to Equation 2, which is defined using the User
Equation 2 menu (see section 5.3.08), as follows:-
EQUATION #2
+10000
0
-10000
FAST
When the operating mode is set to Fast, the CH1 and CH2 analog outputs are derived
from the first stage of output filtering or the fast magnitude converter. The update
rate is increased to 7.5 MHz when the time constant is set to any value from 1 µs to
4 ms but remains at 1 kHz for longer time constants. The output filter slope is
restricted to either 6 or 12 dB/octave. The minimum step time per point for oscillator
amplitude and frequency sweeps is 140 ms.
Chapter 5, FRONT PANEL OPERATION
0.1
10
0.5
log
10
1.000
= 0.301
CH1/2 Voltage
2.000 V
0.0 V
-3.000 V
CH1/2 Voltage
10.0 V
0.0 V
-10.0 V
CH1/2 Voltage
10.0 V
0.0 V
-10.0 V
5-37