TANDBERG 7000 MXP - Manual (Page 216)

D1335403_T7000_MXP_User_Manual
216
V35:
V.10 (RS423).
For balanced signals a "0"=low voltage is defined as terminal A positive with respect to terminal
B.
For unbalanced signals a "0"= low voltage is defined as terminal positive with respect to GND.
Cable length max: Leased Line Control = 20 Meter
RS449: