1150-B
The General Radio 1150-B Digital Frequency Meter was only available in Catalog S 1968. The Type 1150-B is a general purpose frequency meter and event counter. Its an improvment on the 1150-A with higher frequency range and trigger control. For the frequency display it uses five "Numerik" incadesant readouts. See IND-0300 also IND-1801 for details. An interesting to note that is a lamp fails the counter will stop at that digit. The lamp is part of the counting circuit.
Specifications
- Frequency Range"' 10 Hz to 400 kHz.
- Sensitivity 0.1 volt, peak-to-peak, at 100 kΩ or 1 volt, peak-to-peak, at 1 MΩ.
- Accuracy: ± 1 count ± crystal-oscillator stability.
- Input Impedance: 1 MΩ shunted by 50 pf 100 kΩ shunted by 500 pf, switch selected.
