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Q1601 & Q1602 System Manual
6
V1.64
Vertical interval switching is referenced to the Sync Input and complies with SMPTE RP-
168.
HIGH DEFINITION VIDEO (HD)
The matrix is capable of handling signals in the following formats:
1.485Gb/s
1.485/1.001Gb/s
The serial video inputs are terminated in 75
Ω
and fed to an input receiver circuit that
provides equalisation for losses, mainly at high frequencies, to serial video signals that
have travelled down long cables. This equalisation varies automatically to suit the length
and type of video cable used. The output stage re-clocks the signal from the crosspoint
so that the correct pulse widths and timings are regenerated. It automatically selects the
correct sample rates from those mentioned above. The output amplifiers are designed to
drive 75
Ω
video cables. Output 1 has twin feeds but the second output has just one feed
of the signal.
Vertical interval switching is referenced to the Sync Input, which can be either HD tri-level
sync or standard sync (complies with SMPTE RP-168).
ANALOGUE AUDIO
This module fits above the main video module. It is installed from above and connects to
the main module via a single ribbon cable for power and control. It is fixed in place with
the audio connectors accessible from the rear of the unit. It is a dual channel module so
video and stereo audio is available within a single unit.
The inputs are electronically balanced to provide a high common mode rejection over a
wide frequency range. The input connectors are two D50 multi-way types and outputs
are a single D15. The output stages are balanced and the insertion gain so accurately
maintained that no adjustment is required. A jumper link for each output is provided to
correct the gain when driving into 600
Ω
loads. If it is necessary to drive unbalanced loads
then just one of the output lines and 0V are used, resulting in a 6dB drop in level.
AES/EBU DIGITAL AUDIO
This module fits above the main video module. It is installed from above and connects to
the main module via a single ribbon cable for power and control. It is fixed in place with
the audio connectors accessible from the rear of the unit. This unit supports the standard
110
Ω
AES3-1992 interface.
The audio inputs and outputs are transformer coupled and the connectors are a D50 multi-
way type for inputs and a D15 for the outputs.
For applications using the SMPTE 276M 75
Ω
AES3-ID coaxial interface a standard video
router can be used. Contact the factory for more details about this application.
POWER SYSTEM
The Q1602 model has an internal mains/line power supply (PSU). The Q1602E uses one
or two external PSU’s to convert mains/line voltages to low voltage DC and this allows
the Q1602E series to support a backup PSU.
There are no ac power switches fitted to the equipment as these products are normally
installed in permanent installations and power switched to whole equipment racks by
overall power switches. This reduces the risk of a unit being switched off inadvertently.
The
Q1602
power IEC inlet connector is fitted on the rear panel and incorporates a fuse.
The correct ac power for the country in which the unit is used is selected automatically by
the internal PSU. The internal PSU consists of a self-contained switch mode supply that
converts nominal 110v or 230v ac to DC power at +5V, +/-15V. These clean DC voltages
are used directly by the router modules.