HP 4934A Operating And Calibration Manual page 57

Impedances: Nominally 135,150,600, 900 and 1200 ohm. Transmit and
receive impedances are independently selectable.
Receiver Return Loss: (600, 900 and 1200 ohm; 50 Hz to 4kHz)
Typically >30 dB.
Bridging Loss (up to 20 kHz): Typically <0.2 dB.
Longitudinal Balance;
(typical) >80 dB at 60 Hz, >70 dB at 540 Hz,
>60 dB up to 4 kHz, decreasing at 6 dB per octave up to 20 kHz.
Hold Circuits:
Two, each drawing 23 mA nominal.
AC Power Requirement:
Selectable between 90 to 126Vac RMS,
48
to
66 Hz and 198 to 264 Vac RMS, 48 to 66 Hz. 20 VA maximum.
Battery Supply (option 001):
Nominally 6 hours (4 hours minimum)
operation at 25 °C. Complete recharge typically in 14 hours with unit in
standby mode.
RS-232 port:
DB-9S connector; DTE; baud rates 300, 1200, 2400, 9600,
19200, 38400. 8-bits; no parity; 1 stop bit; hardware flow control.
Temperature range (without batteries):
Operating: 0 to +50
°C.
Storage: -40 to +75 °C.
Temperature Range (with batteries):
Operating: 0 to +40 °C;
Storage: -20 to +55 °C.
Size (W H D; including handle):
28.0 10.5 35.5 cm
(11.0 4.1 14.0 inches)
Weight (without batteries):
3.7 kg (8.2 lb).
Weight (with batteries):
5.0 kg (11.0 lb).
General Information 3-15