You don’t have to look hard to see the benefits of the Videotek® Compact Monitor Series — including the CMN-91 multiformat signal analyzer with integral LCD. The smallest solution on the market for efficient video and audio signal monitoring, the CMN-91 tests signal quality across all DTV formats up to 3 Gb/s. It possesses two SDI inputs and provides selectable waveform, vector, gamut, timing and picture full-screen display.
With the CMN-91 you can meter all 16 channels of embedded audio or one AES input. You can also view the waveform of the composite or tri-level external reference to verify signal integrity and customize the MLT display with independent size and position of waveform, vector and picture.
The CMN-91 is available with either SD, HD/SD or 3G/HD/SD inputs. The SD and HD/SD models are fully upgradeable to 3G/HD/SD.
A standard 11-17 VDC power input and optional battery mount provide flexible powering for both fixed installations and field operation. Low power consumption allows the use of convection cooling for energy-saving, silent operation.
The CMN-91 is extremely lightweight and is available as portable or rackmountable. The unit has a compact half-rack footprint less than seven inches deep — a short mounting depth that integrates easily in today’s space-constrained facilities.
CMN-91 Back Panel

CMN-91 Compact Monitor screen capture with quad display showing picture, audio, waveform and vector.

Compact Monitor Series screen capture in Overlay mode with waveform, vector and PiP display. Each component of the display is individually resizable.

Specifications and designs are subject to change without notice.
| Inputs | |
| Input Type | 2 active looping inputs |
| Input Connector Type | BNC female |
| Input Impedance | 75 ohms nominal |
| Signal Source Amplitude | 800 mV nominal |
| Signal Source DC Offset | ±0.5 VDC |
| SD-SDI Input | |
| Input Return Loss | ≤-25 dB (5 to 270 MHz) |
| Cable EQ | ≥300 M, Belden 8281 |
| HD-SDI Input | |
| Input Return Loss | ≤-15 dB (5 to 1.485 GHz) |
| Cable EQ | ≥100 M, Belden 8281 |
| 3 Gb/s SDI Input | |
| Input Return Loss | ≤-10 dB (1.485 to 2.97 GHz) |
| Cable EQ | ≥80 M, Belden 1694A |
| External Reference Input | |
| Input Type | Passive looping |
| Input Connector Type | BNC female |
| Input Impedance | 75 ohms nominal |
| Blackburst Input Amplitude | NTSC: sync and burst 286 mV nominal
PAL: sync and burst 300 mV nominal |
| Blackburst Input Amplitude Tolerance | ±6 dB |
| Tri-level Sync Amplitude | 600 mV pk-pk |
| Tri-level Sync Amplitude Tolerance | ±3 dB |
| Return Loss | ≤-40 dB |
| Digital Audio Input | |
| Audio Formats | AES/EBU, embedded |
| AES Input Connector type | 1 BNC female |
| AES Input Impedance | 75 ohms nominal |
| AES Input Return Loss | >25 dB (0.1 to 6 MHz) |
| AES Input Level | 0.2 to 2 V |
| Input Sample Rate
| AES, 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz
(internally sample rate converted to 48 kHz) |
| SDI Output | |
| Output Connector Type | BNC female |
| Output Impedance | 75 ohms |
| Output Return Loss | ≤-15 dB (5 MHz to 1.485 GHz)
≤-10 dB (1.485 to 2.97 GHz) |
| Output Signal Level | 800 mV ±10% |
| Output DC Offset | 0 V ±0.5 V |
| Analog Monitoring Output — Headphone | |
| Number/Connector | One 1/8 in (3.5 mm) headphone jack |
| Load Impedance | 16 ohms nominal |
| Maximum Output Level | 44 mW RMS |
| Total Harmonic Distortion + Noise (THD+N) | ≤-65 dB |
| Level Adjustment | From maximum output level to 0 mV with front-panel control |
| Source | Any audio input pair may be selected to appear on the headphone output |
| DVI Output | |
| Output Connector | DVI-I connector supporting DVI-D |
| Output Resolution | 1024x768 (XGA) |
| H-Sync Rate | 48.363 Hz ±1% |
| V-Sync Rate | 60.004 Hz ±1% |
| Communication Interfaces | |
| Ethernet | 1 Ethernet Port, RJ45 connector, 10/100Base-T |
| USB | 1 USB 2.0 Host Port (except CMN-41L) |
| LTC/GPIO | 1 LTC/GPIO connector 15-pin female D-sub |
| LTC | Nominal input amplitude: 2 V pk-pk |
| 4 General Purpose Inputs | Input impedance: 10 K ohms returned to +3.3 VDC |
| 1 General Purpose Output | Relay closure |
| Waveform/Vector Display – SDI Inputs | |
| General | A full-screen display for viewing an input as picture, waveform, vector, audio, alarm status, or timing |
| Waveform | Composite; YCBCR or RGB, parade/overlay of like formats |
| Sweep Time Base | 1 or 2H with x1, x5, and x10 horizontal magnification
1 or 2 V with x1, x5, and x25 horizontal magnification |
| Waveform Accuracy | ≤±0.5% |
| Vector | CB vs. CR for HD or SD |
| Vector Accuracy | ≤1° |
| Gamut | Encoded or RGB gamut displays with upper and lower limit selection |
| Audio | 2, 4, 6, 8, or 16-channels displayed simultaneously |
| Waveform Display – External Reference and LTC | |
| Waveform Amplitude Accuracy | ±5% |
| Waveform Frequency Response | 25 Hz to 4.5 MHz within ±5% of amplitude at 50 kHz |
| Power Requirements | |
| Power Connector | 15 VDC nominal
11 VDC minimum 17 VDC maximum |
| Power Consumption | 20 W nominal |
| Over-Voltage Protection | ±50 VDC nominal |
| Mechanical | |
| Dimensions (H X W X D) | 5.22 x 8.46 x 5.8 in. (13.26 x 21.49 x 14.73 cm) |
| Weight | 5.0 lbs (2.27 kg) |
| Battery Mount (optional) | Anton-Bauer gold-mount battery bracket with inter active connection
IDX V-mount battery mount with Digi-View connection |
| Environmental | |
| Operating Temperature | 32° to 122° F (0° to 50° C) |
| Storage Temperature | -22° to 149° F (-30° to 65° C) |
| Humidity (non condensing) | Operating: 20% to 80%
Non-operating: 5% to 90% |
| Transportation | 24 in. (9.5 cm) impact-drop survivable in original factory packaging |
| Altitude | 6562 ft (2000 m) |
| Pollution Degree | 2 |
| CMN-91 | Compact Monitor Series multiformat signal analyzer with integral LCD, HD/SD-SDI, 3RU, half rack, upgradeable to 3 Gb/s |
| CMN-91-3GB | Compact Monitor Series multiformat signal analyzer with integral LCD, 3G/HD/SD-SDI, 3RU, half rack |
| CMN-91-S | Compact Monitor Series multiformat signal analyzer with integral LCD, SD-SDI, 3RU, half rack, upgradeable to HD and 3 Gb/s |
| CMN-AB | Battery mount for CMN-91, Anton-Bauer gold mount |
| CMN-AB-F | Battery mount for CMN-91, Anton-Bauer gold mount, field upgrade |
| CMN-H23GB-F | Upgrade CMN-41 or CMN-91 to support 3 Gb/s, field upgrade |
| CMN-IDX | Battery mount for CMN-91, IDX V-mount |
| CMN-IDX-F | Battery mount for CMN-91, IDX V-mount, field upgrade |
| CMN-IN-DRC2 | Hardware kit to mount a CMN-91 in a DRC-2A rack mount |
| CMN-S23GB-F | Upgrade CMN-41-S or CMN-91-S to support HD and 3 Gb/s, field upgrade |
| CMN-S2H-F | Upgrade CMN-41-S or CMN-91-S to support HD, field upgrade |
| BLK-1 | Blank panel for DRC-1, DRC-2, DRC-2A or DRC-3 |
| DRC-3 | Double rackmount case for CMN-91, use BLK-1 to fill unused space if needed |
| PTC-3A | Portable case with handle and tilt bail for CMN-91 and CMN-LA |
| PTC-3-CC | Padded carrying case for CMN-91 mounted in a PTC-3 |
| PTC-3-SC | PTC-3-CC padded carrying case in a hardshell wheeled shipping case |