X-Axis Sweep Ranges and Sweep ranges correspond numerically in seconds
Linearity: to the millivolt ranges on the X-range selector
scale. These sweeps, for full scale travel, are
7. 5, 15, 75, 150, and 750 seconds. A variation of up to five times the indicated
fixed intervals may be obtained by operation of the X-range expander control
with the switch in the llVAR1f position. Sweep linearity is governed by the cir-
cuit constants and normally does not vary more than t 270.
-
Calibration Stability: Short term calibration drift of the Autograf is
negligible. Long term calibration change due
to aging of the reference cells will accrue at the rate of .25% each 6 months.
During the 12 to 18 months expected life of the reference cell, this drift can be
compensated by recalibrating the recorder when maximum accuracy is required.
Calibration procedure is given in the "Maintenance" section of this manual.
Calibration Stability: Sweep intervals are established by special com-
(Sweep Range s) ponent selection for each instrument during manu-
facture. The reference cells used for axis calibration also supply voltage for
operation of the time base. Initial accuracy will be maintained during the normal
life of the reference cells.
RRIME #Ay 8CREW
8TABILItIWO DOLUU
CAILC CA88AOL
THRU MOUNT
BC LLQWI- COUPLED
SWWC 8HfAVf
CABLE THREAD HOuI .
Rear View, Model 2s
14 Fig. 8 |
ACEC
HEWLETT-PACKARD
