Rane AD 22 - Manual (Page 3)

Manual-3
REAR PANEL DESCRIPTION
ቢ REMOTE RECALL terminals. Wiring external configuration switches to these terminals allows remote recall of the two
nonvolatile memories for each Channel. When the switch closes, Memory B for the given Channel is recalled. When the
switch opens, Memory A is recalled. These terminals use CMOS (+5 volt) logic levels and sink only 3mA (max.) each.
ባ Recessed lockout switch. Enables the Front Panel Lockout mode. In this mode all front panel controls, with the exception
of the CHAN and DISPLAY MODE buttons, are disabled. The Channel button remains active so the user may view the
current Delay values without risk of changing them, and the display mode button allows display of Delay values in millisec-
onds, feet or meters. Press RECALL while in LOCKOUT to temporarily display, but not Recall, the value of the other stored
Memory for the indicated Channel. (See OPERATING INSTRUCTIONS for optional Bypass lockout mode, and MEMORY
BUTTONS on previous page.)
ቤ INPUT/OUTPUT terminals. Nothing new here, the AD 22 uses balanced terminal strip ins and outs. If you desire
unbalanced characteristics (like hum), you can wire the AD 22 in an unbalanced configuration (see SYSTEM CONNEC-
TION on the next page).
ብ POWER input connector. No this is not where Commissioner Gordon plugs in his Bat-phone, in fact it is not a telephone
jack at all. The AD 22 uses an 18 volt AC center-tapped transformer only. Use only a model RS 1, RAP 10, or other remote
AC power supply approved by Rane. The AD 22 is supplied with a remote power supply suitable for connection to this jack.
Consult the factory for replacement or substitution.
ቦ Chassis ground point. A# 6-32 screw and toothed washer is provided for chassis ground. Since the AD 22 does not get
chassis ground through the AC cord, this point is provided in case your system does not have another earth ground such as
the rack rails. See the CHASSIS GROUNDING note below for details.
NOTES
FCC & VDE NOTICE
This equipment has been tested and found to comply
with the limits for a Class A digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interfer-
ence when the equipment is operated in a commercial
environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and
used in accordance with the instruction manual, may
cause harmful interference to radio and other communica-
tions. Operation of this equipment in a residential area is
likely to cause harmful interference in which case the user
will be required to correct the interference at their own
expense.
CHASSIS GROUNDING
If after hooking up your system it exhibits excessive
hum or buzzing, there is an incompatibility in the
grounding configuration between units. Here are some
things to try:
1. Try combinations of lifting grounds on units
supplied with ground lift switches (or links).
2. Verify all chassis are tied to a good earth ground.
3. Units with outboard power supplies like the AD 22
do not ground the chassis through the line cord. Make
sure these units are solidly grounded by tying the Chassis
Ground Point to known earth ground. Use a star washer
to guarantee proper contact.