Tektronix 2247A Operator's Manual page 161

Performance Characteristics
Table 6-1 (cont)
Electrical Characteristics
CHARACTERISTICS PERFORMANCE REQUIREMENTS
EXTERNAL C/T REFERENCE INPUT
Input Impedance
10.1 KQ. +5%, AC coupled.
Sensitivity
1 Volt pk-pk, duty factor from 40% to 60%
measured at the DC average point on the
waveform.
Maximum Input Voltage
35 Volts (de + peak ac) .4
Allowable Input
Frequencies
1, 5, or 10 MHz 42%.
Counter/Timer automatically senses the
applied external Input signal, determines
whether it Is 1, 5, or 10 MHz, and multiplies It
by 200, 40, or 20 respectively to derive the
200 MHz timing signal. Indication Is glven In
readout when external timebase is being used.
PROBE ADJUST OUTPUT
Overshoot (rising and
falling edge)
0.1% or less,
Output Voltage on PROBE
ADJUST Jack
0.5 V +2% into 1 MQ. load.
Repetition Rate
1 kHz +25%.
FRONT PANEL SETUP MEMORY
Battery Life
5 years.2
Battery Type 3.0 V, 1200 MAH, Type BR-2/3AE2P,
Lithium 4
WARNING —To avoid personal injury,
have battery replaced only by a qualified
service person who understands proper
handling and disposal procedures for
Lithium batteries.
4 Performance Requirement not checked in manual.
2247A Operators
6-25