HP 4934A Operating And Calibration Manual page 56

Loss of Holding Tone: sign in right display; latching,
Count Timer: Nominally 5,15, 60 minutes, or nonstop.
Count Range:
0 to 9999.
Max Count Rate: Nominally 8 per second.
Noise-to-Ground (Receiver)
• Transmitter: off and terminated.
Range
(600, 900 and 1200 ohm):
50 to 130 dBm.
Resolution:
1 dB.
Accuracy: ± 1.5 dB (60-130 dBrn);± 2.5 dB (50-60 dBm).
Filters and Detector:
See message circuit noise.
P/AR
Transmitter
Signal:
16 frequencies in range 140 to 3890 Hz.
Level range:
-40 to 0 dBm.
Resolution:
1 dB.
Receiver
P/AR Range: 0 to 120 units.
Resolution:
1 unit.
Accuracy (30 to 110 units): ± 2 units.
Level Range: -40 to +3 dBm RMS
(135 and 160 ohm: -30 to +3 dBm RMS).
Resolution: 1 dB.
General
Maximum DC Blocking:
200 V nominal.
3-14 General Information