HEIDENHAIN PWM 8 - Manual (Page 41)

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Measure amplitudes:
Measuring range:
0.2 Vpp - 1.6 Vpp
Measuring frequency: 10 Hz - 50 kHz
Tolerance:
without adjustment via software:
±
5 %
with adjustment via software:
±
3 %
Terminating resistance:
121
Ω
Fault detection signal:
A and B < 0.3 Vpp
Encoder output:
Output
signal: like input signal with U 0
8.6 Specifications of TTL Interface Board
Maximum input voltage:
±
7V
Maximum input frequency: approx. 2 MHz
Note:
The maximum input frequency only stands for the cutoff frequency of the square-wave input at PWM 8
(signal source: frequency generator).
Measure current/voltage:
Measuring range
current: 0 - 500 mA
Measuring range voltage: 0 - 10 V
Tolerance:
±
3 %
Measure amplitudes:
Measuring range
high level: 2.5 - 7.5 V
Measuring range low level: 0 - 2.5 V
Resolution: 50 mV
Measuring frequency: 10 Hz - 200 kHz
Tolerance:
±
50 mV
Terminating resistance:
From encoder signal to U-MSYS
215
Ω
From encoder signal to GND 90,9
Ω
Special feature of TTL interface board:
Owing to the input wiring, the PHA/TV display works properly even in the case of a cable break. The missing
signals are generated internally and output at the encoder output. Cable breaks can be found in the mode
"Measure Signal Amplitudes" or by checking the encoder signals at the BNC sockets.