Martel Electronics T150 - Manual (Page 5)

3
Operating Modes
1. When operating in the output mode the T150
has the capability to drive loads up to 1
kOhm with TTL levels. The standard output
amplitude is a 5 volt ± 10% p-p square wave.
Figure 1
2. When operating in the read (input) mode the
T150 can monitor frequencies with
amplitudes ranging from 1 to 100 volts. The
waveform shape can be square, sine or
triangular.
Figure 2
Accuracy
The T150 is checked against an NIST Traceable
reference before shipment to verify that each
range falls within the 0.01% ±1count of full
scale. Since the accuracy of this particular
product is based on a very stable quartz
crystal, the T150 should stay well within its
operating specification without the need for
calibration for periods of 1 year or more.