18
Parameter Detector Family Default Condition
D_BUF_SIZE 100
Data Store Units Same as UNITS
EXT OFF
EXT TRIG IN FALLING
TRIGGER OUT TRIG ON CMPLT
TRIG OUT POL TRIG ACTIVE LO
TRIG OUT FREQ FREQ = 30 Hz
TRIG LEVEL Low-Power, High-Power LVL = 0.001 W
Energy LVL = 0.001 J
TRIG INTG LVL Low-Power, High-Power INTG = 0.001 J
BAR GRAPH ON
TONE OFF
GPIB ADDR 05
BAUD RATE 9600
RS-232 ECHO OFF
These parameters adopt the following default values at power up and are not
affected by recalling a configuration or by setting the configuration to default.
Local Lockout OFF
Display Brightness NORMAL
Table 10. below lists the menu commands effecting the saving and recalling of
meter configurations.
Table 10 – Meter Configuration Operations
Menu Operation Keypad Commands Associated Remote Commands
SAVE CONFIG Adjust SAVE TO d, *SAV
and ENTER
RECALL CONFIG Adjust RECALL d, *RCL,*RST
and ENTER
2.4.4 AUTO CAL
The AUTO CAL command causes the 2835-C to perform A/D conversions of
amplifier offset voltages (zero errors) arising from aging and temperature
effects. These conversions are then used in subtracting the appropriate error
voltage from each reading during normal operation. The 2835-C automatically
performs this procedure every time it powers up (or is reset). To achieve
stable reading at the specified accuracy, AUTO CAL should be executed for
each channel after a minimum 60 minute warm-up period from power-up.
Executing AUTO CAL with High Power (Thermopile) detectors:
1. With the detector connected to the 2835-C, remove the detector from the
radiation source and allow a minimum of 60 seconds for the detector
surface temperature to stabilize.
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