Band 11 Transmitter Output Monitor. This unit detects the
output level of a Band 11 transmitter using an external
coupler, and provides indications via LEDs and opto-
isolator outputs of abnormal power conditions. Power
requirements 28V, SOmA. Parent equipment AM14/51. DD
1981. DDMI 5.415(82)
Changeover and Power Supplier Monitor. Used for TV Outside
Broadcasts communications. The module provides automatic
changeover of either plus or minus supplies from a single
standby supply. Power requirements !16V 8A input. Parent
equipment PS2M/291. SCPD 1983.
7.6/7.8KHz Tone Detector. Monitoring detector for 7.8KHz
requirements A.C. mains or unregulated DC 18-25 V at <1 A.
CH1/64A. Termination panel: PN3A/50A. Chassis extender:
CHlA/43. DD 1983. DDMI 2.464(83). DDHB 2.490(83).
Tone Detector. Variation of MN1/27 to enable the detection
of any of the following frequency pairs: 7.6, 7.8; 8.6,
8.8; 9.6, 9.8; 10.6, 10.8 kHz. Power requirements 240 V
ac. CH1/64A. Sub-units, possible plug in sub-boards to
TV Waveform Analyser Monitor Unit. This unit is intended
to be connected to the ME3M/502 TV Waveform Analyser, it is
used to control the analyser so that it may be used as an
automatic waveform-quantity monitor. Power requirements
240V a.c. mains. CH1/64A 4u 'A' width BMM chassis.
Sub-units UN26/57 (ADZE Unit). DD 1984.
Supply Monitor. This unit monitors the presence of supply
voltage at +12V, -5V and -12V. When all four are present
the unit gives a low output from an open-collector TTL
gate. Power requirements +12V, +15V, -5V, -12V d.c. 4U
unsupported board with J-width front panel. Parent
equipment C06/512. DD 1984.
Tone Detector. This unit detects the presence of
continuity tones on audio signals in the range 7.6 kHz to
10.8 kHz. Its specification is similar to that of the
MN1/27A, but it is fitted in a 2 U chassis. Simultaneous
detection of any of the following pairs of tones may be
selected: 7.6/7.8; 8.6/8.8; 9.6/9.8; 10.6/10.8 kHz.
Separate relay outputs are provided for each tone, with
additional outputs to indicate pulsing tones. Power
requirements 240 V ac or +24 V dc. CH1/65C. Chassis
extender CH1A/61 (dc only). Termination Panel PA20/34. DD
Headphone Level Indicator. Intended for use with AM10P/21
Stereo Headphone Amplifier (Foldback Box), in order to
detect audio signal levels at amplifier outputs. Amber and
red lamp indications are given for signals exceeding those
corresponding to acoustic outputs of 100 dBA and 105 dBA
requirements: 24 V, 130 mA. PCB dimensions: 3.75" x 2.1"
with cut-outs. Parent equipment: AM10P/21. DD(3) 1986.