Section I Model 122A/AR
Figure 1-1 and Table 1-1
Figure 1- 1. Model 122A/AR Oscilloscope
Table 1- 1. SDecifications
SWEEP Input Impedance: 1 megohm, approximately50 pf
shunt capacitance.
Sweep Range: 15 calibrated sweeps, from 5
psec/cm to 200 msec/cm, accurate to within Phase Shift: Vertical and horizontal amplifiers
5%, in a 1, 2, 5 sequence. Vernier permits have same phase characteristics within *2"
continuous adjustment of sweep time between to 100 kHz when verniers are fully clockwise.
Isolation: Greater than 80 db isolation between
calibrated steps and extends the 200 msec/cm channels A and B from dc to 200 kHz.
range to at least 0.5 sec/cm. Balanced Input: On 10 mv/cm range on both amp-
Sweep Expand: X5 sweep expansion may be used
on all ranges and expands fastest sweep to 1 lifiers. Input impedance, 2 megohms shunted
psec/cm. Expansion is about the center of the by approximately 25 pf. Common mode rejec-
CRT and expanded sweep accuracy is 5 10%. tion is at least 40 db. Common mode signal
must not exceed +3 volts peak.
Synchronization: Automatic from 50 Hz to 250 Difference Input: Both input signals may be
kHz; internally from vertical deflection signals switched to one channel to give differential in-
causing 1/2 cm or more vertical deflection;
from external signals 2. 5 volts peak-to-peak put on all vertical sensitivity ranges. The
or greater, and from line voltage. sensitivity switches may be set separately to
Trigger Point: Control overrides automatic and allow mixing signals of different levels. Com-
mon mode rejection is at least 40 db with both
permits thetriggerpoint to be set between -10 switches on most sensitive ranges; 30 db on
and +10 volts. Turning fully counterclockwise
into AUTO restores automatic operation. Posi- other ranges.
tive or negative slope may be selected on the Vertical Presentation: Switch selects: A ONLY,
INTernal trigger. Triggering in EXTernal is B ONLY, B-A, ALTERNATE or CHOPPED.
automatically established on the negative slope.
HORIZONTAL AMPLIFIER
IERTICAL AMPLIFIERS
Bandwidth: DC coupled: DC to 200 kHz. AC
Bandwidth: DC coupled: DC to 200 kHz. AC coupled: 2 Hz to200 IrHz. Bandwidth is inde-
coupled: 2 Hz to 200 kHz. Bandwidth is inde- pendent of calibrated sensitivity setting.
pendent of calibrated sensitivity setting. Sensitivity: 0. 1 v/cm to 100 v/cm. 3 calibrated
Sensitivity: 10 mv/cm to 100 v/cm. 4 calibrated steps, accuratewithin *5%, 0.1 v/cm, 1 v/cm,
steps accurate within *3%, 10 mv/cm, 100 and 10 v/cm. Vernier permits continuous
mv/cm, 1 v/cm, and 10 v/cm. Vernier per- adjustment of sensitivity between steps and ex-
mits continuous adjustment of sensitivity be- tends 10 v/cm step to at least 100 v/cm.
tween steps and extends 10 v/cm step to at Input Impedance: Approximately 1 megohm
least 100 v/cm. shunted by 100 pf.
Internal Calibrator: Calibrating signal automatic- Phase Shift: Horizontal and vertical amplifiers
ally connected to vertical amplifier for stand- have same phase characteristics within *2' to
ardizing -I, of gain. accuracv *2%. 100 kHz.
0 00081-1 |
ACEC
